Document:

Exhibit 4.1

                                SPATIALIGHT, INC.
                             1999 STOCK OPTION PLAN

         1.       ESTABLISHMENT, PURPOSE AND TERM OF PLAN.

         1.1 Establishment.  This SpatiaLight,  Inc. 1999 Stock Option Plan (the
"Plan") is hereby established effective as of June 21, 1999.

         1.2 Purpose. The purpose of the Plan is to advance the interests of the
Participating  Company Group and its  stockholders  by providing an incentive to
attract,  retain and reward persons  performing  services for the  Participating
Company  Group and by  motivating  such persons to  contribute to the growth and
profitability of the Participating Company Group.

         1.3 Term of Plan.  The Plan shall  continue in effect until the earlier
of its  termination by the Board or the date on which all of the shares of Stock
available for issuance under the Plan have been issued and all  restrictions  on
such shares under the terms of the Plan and the  agreements  evidencing  Options
granted under the Plan have lapsed. However, all Options shall be granted, if at
all,  within ten (10) years from the  earlier of the date the Plan is adopted by
the  Board  or the date the Plan is duly  approved  by the  stockholders  of the
Company.

         2.       DEFINITIONS AND CONSTRUCTION.

         2.1 Definitions.  Whenever used herein,  the following terms shall have
their respective meanings set forth below:

              (a) "Board" means the Board of Directors of the Company. If one or
more Committees have been appointed by the Board to administer the Plan, "Board"
also means such Committee(s).

              (b) "Code"  means the Internal  Revenue Code of 1986,  as amended,
and any applicable regulations promulgated thereunder.

              (c)  "Committee"   means  the  Compensation   Committee  or  other
committee  of the Board duly  appointed to  administer  the Plan and having such
powers as shall be  specified by the Board.  Unless the powers of the  Committee
have been  specifically  limited,  the Committee shall have all of the powers of
the Board granted herein, including,  without limitation,  the power to amend or
terminate  the  Plan at any  time,  subject  to the  terms  of the  Plan and any
applicable limitations imposed by law.

              (d) "Company" means SpatiaLight,  Inc., a New York corporation, or
any successor corporation thereto.

              (e) "Consultant" means any person,  including an advisor,  engaged
by a  Participating  Company to render  services  other than as an Employee or a
Director.

              (f)  "Director"  means a member  of the  Board or of the  board of
directors of any other Participating Company.

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              (g)  "Disability"  means the  inability  of the  Optionee,  in the
opinion of a qualified physician acceptable to the Company, to perform the major
duties of the Optionee's  position with the Participating  Company Group because
of the sickness or injury of the Optionee.

              (h) "Employee" means any person treated as an employee  (including
an officer or a Director who is also treated as an employee) in the records of a
Participating Company and, with respect to any Incentive Stock Option granted to
such  person,  who is an  employee  for  purposes  of  Section  422 of the Code;
provided,  however,  that  neither  service  as  a  Director  nor  payment  of a
director's fee shall be sufficient to constitute  employment for purposes of the
Plan.

              (i) "Exchange Act" means the  Securities  Exchange Act of 1934, as
amended.

              (j) "Fair  Market  Value"  means,  as of any date,  the value of a
share of Stock or other property as determined by the Board,  in its discretion,
or by the  Company,  in its  discretion,  if  such  determination  is  expressly
allocated to the Company herein, subject to the following:

              (i) If,  on such  date,  the  Stock is  listed  on a  national  or
regional  securities exchange or market system, the Fair Market Value of a share
of Stock  shall  be the  closing  price of a share of Stock  (or the mean of the
closing  bid and  asked  prices  of a share of Stock if the  Stock is so  quoted
instead) as quoted on the Nasdaq National Market,  The Nasdaq SmallCap Market or
such  other   national  or  regional   securities   exchange  or  market  system
constituting  the primary  market for the Stock,  as reported in The Wall Street
Journal or such other source as the Company deems reliable. If the relevant date
does not fall on a day on which the Stock has traded on such securities exchange
or market  system,  the date on which the Fair Market Value shall be established
shall be the last day on which the Stock  was so  traded  prior to the  relevant
date, or such other  appropriate day as shall be determined by the Board, in its
discretion.

              (ii) If, on such  date,  there is no public  market for the Stock,
the Fair Market Value of a share of Stock shall be as determined by the Board in
good faith without regard to any restriction other than a restriction  which, by
its terms, will never lapse.

              (k)  "Incentive  Stock Option" means an Option  intended to be (as
set forth in the Option  Agreement)  and which  qualifies as an incentive  stock
option within the meaning of Section 422(b) of the Code.

              (l) "Insider" means an officer or a Director of the Company or any
other  person  whose  transactions  in Stock are  subject  to  Section 16 of the
Exchange Act.

              (m) "Nonstatutory Stock Option" means an Option not intended to be
(as set forth in the Option Agreement) or which does not qualify as an Incentive
Stock Option.

              (n)  "Option"   means  a  right  to  purchase  Stock  (subject  to
adjustment as provided in Section 4.2)  pursuant to the terms and  conditions of
the Plan.  An Option may be either an Incentive  Stock Option or a  Nonstatutory
Stock Option.

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              (o) "Option  Agreement" means a written  agreement,  including any
related  form of stock  option  grant  agreement,  between  the  Company  and an
Optionee  setting forth the terms,  conditions  and  restrictions  of the Option
granted to the Optionee and any shares acquired upon the exercise thereof.

              (p)  "Optionee"  means a person who has been  granted  one or more
Options.

              (q)  "Parent  Corporation"  means any  present  or future  "parent
corporation" of the Company, as defined in Section 424(e) of the Code.

              (r)  "Participating  Company"  means  the  Company  or any  Parent
Corporation or Subsidiary Corporation.

              (s) "Participating Company Group" means, at any point in time, all
corporations collectively which are then Participating Companies.

              (t) "Prior Plan  Options'"  means the stock options  granted under
the Company's 1991 Stock Option Plan,  1993  Nonstatutory  Employee Stock Option
Plan and 1993 Outside  Director  Stock Option Plan that were  outstanding on the
date that the Board approved the Plan.

              (u) "Rule  16b-3"  means Rule 16b-3  under the  Exchange  Act,  as
amended from time to time, or any successor rule or regulation.

              (v) "Section 162(m)" means Section 162(m) of the Code.

              (w) "Securities Act" means the Securities Act of 1933, as amended.

              (x) "Service"  means an Optionee's  employment or service with the
Participating  Company Group, whether in the capacity of an Employee, a Director
or a Consultant.  The Optionee's  Service shall not be deemed to have terminated
merely because of a change in the capacity in which the Optionee renders Service
to the Participating  Company Group or a change in the Participating Company for
which the Optionee renders such Service,  provided that there is no interruption
or termination of the Optionee's  Service.  Furthermore,  an Optionee's  Service
with the  Participating  Company Group shall not be deemed to have terminated if
the Optionee takes any military  leave,  sick leave, or other bona fide leave of
absence  approved  by the  Company;  provided,  however,  that if any such leave
exceeds  ninety  (90)  days,  on the  ninety-first  (91st) day of such leave the
Optionee's  Service  shall be deemed to have  terminated  unless the  Optionee's
right to return to Service with the Participating Company Group is guaranteed by
statute or contract.  Notwithstanding the foregoing, unless otherwise designated
by the Company or  required  by law, a leave of absence  shall not be treated as
Service  for  purposes  of  determining  vesting  under  the  Optionee's  Option
Agreement. The Optionee's Service shall be deemed to have terminated either upon
an actual  termination of Service or upon the corporation for which the Optionee
performs  Service  ceasing  to  be  a  Participating  Company.  Subject  to  the
foregoing,  the  Company,  in  its  discretion,   shall  determine  whether  the
Optionee's Service has terminated and the effective date of such termination.

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              (y) "Stock"  means the common  stock of the  Company,  as adjusted
from time to time in accordance with Section 4.2.

              (z)   "Subsidiary   Corporation"   means  any  present  or  future
"subsidiary  corporation"  of the Company,  as defined in Section  424(f) of the
Code.

              (aa) "Ten Percent  Owner  Optionee"  means an Optionee who, at the
time an Option is granted to the Optionee,  owns stock  possessing more than ten
percent  (10%) of the total  combined  voting power of all classes of stock of a
Participating Company within the meaning of Section 422(b)(6) of the Code.

         2.2  Construction.   Captions  and  titles  contained  herein  are  for
convenience  only and shall not affect  the  meaning  or  interpretation  of any
provision of the Plan.  Except when  otherwise  indicated  by the  context,  the
singular shall include the plural and the plural shall include the singular. Use
of the term "or" is not  intended to be  exclusive,  unless the context  clearly
requires otherwise.

    3. ADMINISTRATION.

         3.1  Administration by the Board. The Plan shall be administered by the
Board.  All  questions of  interpretation  of the Plan or of any Option shall be
determined by the Board, and such determinations shall be final and binding upon
all persons having an interest in the Plan or such Option.

         3.2 Authority of Officers. Any officer of a Participating Company shall
have the  authority  to act on behalf of the Company with respect to any matter,
right,  obligation,  determination or election which is the responsibility of or
which is  allocated  to the Company  herein,  provided  the officer has apparent
authority  with  respect to such matter,  right,  obligation,  determination  or
election.

         3.3   Administration   with  Respect  to  Insiders.   With  respect  to
participation  by  Insiders  in the  Plan,  at any time that any class of equity
security of the  Company is  registered  pursuant to Section 12 of the  Exchange
Act, the Plan shall be administered in compliance with the requirements, if any,
of Rule 16b-3.

         3.4 Powers of the Board.  In addition to any other  powers set forth in
the Plan and  subject to the  provisions  of the Plan,  the Board shall have the
full and final power and authority, in its discretion:

              (a) to  determine  the  persons to whom,  and the time or times at
which,  Options shall be granted and the number of shares of Stock to be subject
to each Option;

              (b)  to   designate   Options  as  Incentive   Stock   Options  or
Nonstatutory Stock Options;

              (c) to determine the Fair Market Value of shares of Stock or other
property;

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              (d) to determine the terms, conditions and restrictions applicable
to each Option  (which need not be identical)  and any shares  acquired upon the
exercise thereof,  including,  without limitation, (i) the exercise price of the
Option, (ii) the method of payment for shares purchased upon the exercise of the
Option,  (iii) the method for  satisfaction  of any tax  withholding  obligation
arising  in  connection  with  the  Option  or  such  shares,  including  by the
withholding  or  delivery  of  shares  of  stock,  (iv) the  timing,  terms  and
conditions  of the  exercisability  of the  Option or the  vesting of any shares
acquired  upon  the  exercise  thereof,  (v) the time of the  expiration  of the
Option,  (vi) the  effect of the  Optionee's  termination  of  Service  with the
Participating Company Group on any of the foregoing,  and (vii) all other terms,
conditions  and  restrictions  applicable  to the  Option  or  such  shares  not
inconsistent with the terms of the Plan;

              (e) to approve one or more forms of Option Agreement;

              (f) to amend, modify,  extend, cancel, renew, reprice or otherwise
adjust the  exercise  price of, or grant a new Option in  substitution  for, any
Option or to waive any  restrictions  or conditions  applicable to any Option or
any shares acquired upon the exercise thereof;

              (g) to accelerate, continue, extend or defer the exercisability of
any Option or the  vesting of any shares  acquired  upon the  exercise  thereof,
including  with respect to the period  following an  Optionee's  termination  of
Service with the Participating Company Group;

              (h) to prescribe,  amend or rescind rules, guidelines and policies
relating to the Plan, or to adopt  supplements  to, or alternative  versions of,
the Plan,  including,  without  limitation,  as the  Board  deems  necessary  or
desirable to comply with the laws of, or to accommodate the tax policy or custom
of, foreign jurisdictions whose citizens may be granted Options; and

              (i) to correct any defect,  supply any omission or  reconcile  any
inconsistency  in the  Plan  or any  Option  Agreement  and to  make  all  other
determinations  and take such  other  actions  with  respect  to the Plan or any
Option as the Board may deem  advisable to the extent  consistent  with the Plan
and applicable law.

         3.5 Committee Complying with Section 162(m). If a Participating Company
is a "publicly held corporation" within the meaning of Section 162(m), the Board
may establish a Committee of "outside  directors"  within the meaning of Section
162(m) to approve the grant of any Option which might  reasonably be anticipated
to result in the payment of employee  remuneration  that would otherwise  exceed
the limit on employee  remuneration  deductible for income tax purposes pursuant
to Section 162(m).

    4. SHARES SUBJECT TO PLAN.

         4.1  Maximum  Number of  Shares  Issuable.  Subject  to  adjustment  as
provided in Section  4.2, the maximum  aggregate  number of shares of Stock that
may be issued

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under the Plan shall be 4,000,000  (the "Share  Reserve")  and shall  consist of
authorized  but  unissued  or  reacquired  shares  of Stock  or any  combination
thereof. However, the Share Reserve, determined at any time, shall be reduced by
the sum of (a) the number of shares,  which remain subject to outstanding  Prior
Plan Options,  and (b) the number of shares,  which have been issued pursuant to
the exercise of Prior Plan Options after the date on which the Plan was adopted.
If an outstanding  Option for any reason expires or is terminated or canceled or
if shares of Stock are  acquired  upon the  exercise  of an Option  subject to a
Company  repurchase  option and are repurchased by the Company at the Optionee's
exercise price, the shares of Stock allocable to the unexercised portion of such
Option or such repurchased shares of Stock shall again be available for issuance
under the Plan. Notwithstanding the foregoing, at any such time as the offer and
sale of securities  pursuant to the Plan is subject to  compliance  with Section
260.140.45  of  Title  10  of  the  California  Code  of  Regulations  ("Section
260.140.45"),  the total number of shares of Stock issuable upon the exercise of
all outstanding Options (together with options outstanding under any other stock
option plan of the Company)  and the total  number of shares  provided for under
any stock bonus or similar plan of the Company shall not exceed  thirty  percent
(30%) (or such other  higher  percentage  limitation  as may be  approved by the
stockholders  of the  Company  pursuant  to  Section  260.140.45)  of  the  then
outstanding  shares  of  the  Company  as  calculated  in  accordance  with  the
conditions and exclusions of Section 260.140.45.

         4.2 Adjustments for Changes in Capital  Structure.  In the event of any
stock dividend, stock split, reverse stock split, recapitalization, combination,
reclassification  or similar  change in the capital  structure  of the  Company,
appropriate  adjustments shall be made in the number and class of shares subject
to the Plan and to any  outstanding  Options,  in the Section 162(m) Grant Limit
set forth in Section 5.4, and in the exercise price per share of any outstanding
Options.  If a majority of the shares  which are of the same class as the shares
that are subject to outstanding  Options are exchanged for,  converted  into, or
otherwise  become  (whether or not pursuant to an  Ownership  Change  Event,  as
defined in Section 8.1) shares of another  corporation  (the "New Shares"),  the
Board may  unilaterally  amend the  outstanding  Options  to  provide  that such
Options are exercisable for New Shares. In the event of any such amendment,  the
number  of  shares  subject  to,  and the  exercise  price  per  share  of,  the
outstanding  Options  shall  be  adjusted  in a fair  and  equitable  manner  as
determined by the Board, in its discretion.  Notwithstanding the foregoing,  any
fractional share resulting from an adjustment pursuant to this Section 4.2 shall
be rounded down to the nearest  whole  number,  and in no event may the exercise
price of any Option be decreased  to an amount less than the par value,  if any,
of the stock  subject to the Option.  The  adjustments  determined  by the Board
pursuant to this Section 4.2 shall be final, binding and conclusive.

         5. ELIGIBILITY AND OPTION LIMITATIONS.

         5.1  Persons  Eligible  for  Options.  Options  may be granted  only to
Employees,  Consultants,  and Directors. For purposes of the foregoing sentence,
"Employees,"  "Consultants" and "Directors" shall include prospective Employees,
prospective Consultants and prospective Directors to whom Options are granted in
connection  with written offers of an employment or other service  relationships
with the Participating  Company Group. Eligible persons may be granted more than
one (1) Option.

         5.2 Option Grant Restrictions. Any person who is not an Employee on the
effective  date of the grant of an Option to such  person may be granted  only a
Nonstatutory  Stock

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Option.  An Incentive  Stock Option  granted to a prospective  Employee upon the
condition that such person become an Employee shall be deemed granted  effective
on the date such person commences Service with a Participating  Company, with an
exercise price determined as of such date in accordance with Section 6.1.

         5.3 Fair Market Value Limitation. To the extent that options designated
as  Incentive  Stock  Options  (granted  under  all  stock  option  plans of the
Participating  Company  Group,  including  the Plan)  become  exercisable  by an
Optionee  for the first time during any  calendar  year for stock  having a Fair
Market Value greater than One Hundred Thousand Dollars ($100,000),  the portions
of such options which exceed such amount shall be treated as Nonstatutory  Stock
Options. For purposes of this Section 5.3, options designated as Incentive Stock
Options shall be taken into account in the order in which they were granted, and
the Fair  Market  Value of stock shall be  determined  as of the time the option
with  respect to such stock is granted.  If the Code is amended to provide for a
different  limitation  from that set forth in this Section 5.3,  such  different
limitation shall be deemed incorporated herein effective as of the date and with
respect to such Options as required or permitted by such  amendment to the Code.
If an  Option  is  treated  as an  Incentive  Stock  Option  in  part  and  as a
Nonstatutory  Stock Option in part by reason of the limitation set forth in this
Section  5.3,  the  Optionee  may  designate  which  portion of such  Option the
Optionee is exercising.  In the absence of such designation,  the Optionee shall
be deemed to have  exercised  the Incentive  Stock Option  portion of the Option
first. Separate certificates representing each such portion shall be issued upon
the exercise of the Option.

         5.4 Section  162(m) Grant Limit.  Subject to  adjustment as provided in
Section 4.2, no Employee  shall be granted one or more Options within any fiscal
year of the Company  which in the  aggregate  are for the  purchase of more than
five hundred thousand  (500,000)  shares (the "Section 162(m) Grant Limit").  An
Option  which is canceled in the same fiscal year in which it was granted  shall
continue to be counted against the Section 162(m) Grant Limit for such period.

         6. TERMS AND CONDITIONS OF OPTIONS.

         Options shall be evidenced by Option  Agreements  specifying the number
of shares of Stock covered thereby, in such form as the Board shall from time to
time  establish.  No Option or  purported  Option  shall be a valid and  binding
obligation of the Company unless evidenced by a fully executed Option Agreement.
Option  Agreements  may  incorporate  all or any of the  terms  of the  Plan  by
reference  and shall  comply  with and be  subject  to the  following  terms and
conditions:

         6.1  Exercise  Price.  The  exercise  price  for each  Option  shall be
established  in the  discretion of the Board;  provided,  however,  that (a) the
exercise  price per share for an  Incentive  Stock Option shall be not less than
the Fair Market Value of a share of Stock on the effective  date of grant of the
Option,  (b) the exercise price per share for a Nonstatutory  Stock Option shall
be not less than  eighty-five  percent (85%) of the Fair Market Value of a share
of Stock on the effective date of grant of the Option, and (c) no Option granted
to a Ten Percent Owner Optionee shall have an exercise price per share less than
one hundred ten percent  (110%) of the Fair Market  Value of a share of Stock on
the effective date of grant of the Option.  Notwithstanding  the  foregoing,  an
Option (whether an Incentive Stock Option or a Nonstatutory

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Stock  Option)  may be granted  with an  exercise  price  lower than the minimum
exercise  price  set  forth  above if such  Option  is  granted  pursuant  to an
assumption or substitution  for another option in a manner  qualifying under the
provisions of Section 424(a) of the Code.

         6.2  Exercise  Period.  Options  shall be  exercisable  at such time or
times,  or upon such event or events,  and  subject to such  terms,  conditions,
performance  criteria,  and restrictions as shall be determined by the Board and
set forth in the Option  Agreement  evidencing such Option;  provided,  however,
that (a) no Option shall be  exercisable  after the expiration of ten (10) years
after the effective date of grant of such Option,  (b) no Incentive Stock Option
granted  to a  Ten  Percent  Owner  Optionee  shall  be  exercisable  after  the
expiration of five (5) years after the  effective  date of grant of such Option,
(c) no Option  granted to a  prospective  Employee,  prospective  Consultant  or
prospective  Director  may  become  exercisable  prior to the date on which such
person  commences  Service  with a  Participating  Company,  and  (d)  with  the
exception of an Option granted to an officer,  Director or Consultant, no Option
shall become  exercisable at a rate less than twenty percent (20%) per year over
a period  of five (5) years  from the  effective  date of grant of such  Option,
subject to the Optionee's  continued Service.  Subject to the foregoing,  unless
otherwise  specified by the Board in the grant of an Option,  any Option granted
hereunder  shall have a term of ten (10) years from the effective  date of grant
of the Option.

         6.3 Payment of Exercise Price.

              (a)  Forms  of  Consideration  Authorized.   Except  as  otherwise
provided below,  payment of the exercise price for the number of shares of Stock
being  purchased  pursuant to any Option shall be made (i) in cash,  by check or
cash equivalent, (ii) by tender to the Company, or attestation to the ownership,
of  shares  of  Stock  owned by the  Optionee  having a Fair  Market  Value  (as
determined by the Company without regard to any restrictions on  transferability
applicable  to such  stock by  reason of  federal  or state  securities  laws or
agreements  with an  underwriter  for the  Company)  not less than the  exercise
price, (iii) by the assignment of the proceeds of a sale or loan with respect to
some or all of the  shares  being  acquired  upon  the  exercise  of the  Option
(including,   without  limitation,   through  an  exercise  complying  with  the
provisions  of  Regulation  T as  promulgated  from time to time by the Board of
Governors of the Federal  Reserve System) (a "Cashless  Exercise"),  (iv) by the
Optionee's  promissory note in a form approved by the Company, (v) by such other
consideration  as may be  approved  by the Board from time to time to the extent
permitted by applicable law, or (vi) by any combination  thereof.  The Board may
at any time or from time to time, by adoption of or by amendment to the standard
forms of Option  Agreement  described  in  Section 7, or by other  means,  grant
Options which do not permit all of the foregoing  forms of  consideration  to be
used in payment of the exercise  price or which  otherwise  restrict one or more
forms of consideration.

              (b) Limitations on Forms of Consideration.

              (i) Tender of Stock.  Notwithstanding the foregoing, an Option may
not be exercised by tender to the Company,  or attestation to the ownership,  of
shares of Stock to the extent  such tender or  attestation  would  constitute  a
violation of the provisions of any law, regulation or agreement  restricting the
redemption of the Company's stock.  Unless  otherwise  provided by the Board, an
Option may not be  exercised  by tender to the Company,  or  attestation  to the
ownership,  of shares of Stock unless such shares  either have been owned by the

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Optionee  for  more  than  six (6)  months  or were not  acquired,  directly  or
indirectly, from the Company.

              (ii)  Cashless  Exercise.  The  Company  reserves,  at any and all
times, the right, in the Company's sole and absolute  discretion,  to establish,
decline to approve or terminate  any program or  procedures  for the exercise of
Options by means of a Cashless Exercise.

              (iii)  Payment by Promissory  Note.  No  promissory  note shall be
permitted  if the  exercise  of an Option  using a  promissory  note  would be a
violation of any law. Any  permitted  promissory  note shall be on such terms as
the Board shall  determine  at the time the Option is  granted.  The Board shall
have the  authority to permit or require the  Optionee to secure any  promissory
note used to  exercise  an Option  with the  shares of Stock  acquired  upon the
exercise  of the  Option or with other  collateral  acceptable  to the  Company.
Unless otherwise provided by the Board, if the Company at any time is subject to
the  regulations  promulgated  by the Board of Governors of the Federal  Reserve
System or any other  governmental  entity  affecting  the extension of credit in
connection with the Company's securities,  any promissory note shall comply with
such applicable regulations, and the Optionee shall pay the unpaid principal and
accrued interest, if any, to the extent necessary to comply with such applicable
regulations.

         6.4 Tax  Withholding.  The  Company  shall have the right,  but not the
obligation,  to deduct from the shares of Stock issuable upon the exercise of an
Option,  or to accept from the  Optionee the tender of, a number of whole shares
of Stock having a Fair Market Value, as determined by the Company,  equal to all
or any part of the federal,  state, local and foreign taxes, if any, required by
law to be  withheld  by the  Participating  Company  Group with  respect to such
Option or the shares  acquired upon the exercise  thereof.  Alternatively  or in
addition,  in its  discretion,  the Company  shall have the right to require the
Optionee, through payroll withholding,  cash payment or otherwise,  including by
means  of a  Cashless  Exercise,  to make  adequate  provision  for any such tax
withholding obligations of the Participating Company Group arising in connection
with the Option or the shares  acquired upon the exercise  thereof.  The Company
shall have no  obligation  to deliver  shares of Stock  until the  Participating
Company Group's tax withholding obligations have been satisfied by the Optionee.

         6.5 Effect of Termination of Service.

              (a) Option  Exercisability.  Subject to earlier termination of the
Option as otherwise  provided  herein,  an Option shall be exercisable  after an
Optionee's termination of Service as follows:

              (i) Disability.  If the Optionee's  Service with the Participating
Company Group is  terminated  because of the  Disability  of the  Optionee,  the
Option,  to the  extent  unexercised  and  exercisable  on the date on which the
Optionee's  Service  terminated,  may be  exercised  by  the  Optionee  (or  the
Optionee's guardian or legal representative) at any time prior to the expiration
of six (6) months (or such longer period of time as determined by the Board,  in
its discretion) after the date on which the Optionee's Service  terminated,  but
in any event no later than the date of  expiration  of the Option's  term as set
forth in the Option  Agreement  evidencing  such Option (the "Option  Expiration
Date").

                                       9
<PAGE>

              (ii)  Death.  If the  Optionee's  Service  with the  Participating
Company Group is terminated because of the death of the Optionee, the Option, to
the  extent  unexercised  and  exercisable  on the date on which the  Optionee's
Service terminated,  may be exercised by the Optionee's legal  representative or
other  person who  acquired  the right to  exercise  the Option by reason of the
Optionee's  death at any time prior to the expiration of six (6) months (or such
longer period of time as determined by the Board, in its  discretion)  after the
date on which the Optionee's Service terminated,  but in any event no later than
the Option  Expiration  Date.  The  Optionee's  Service  shall be deemed to have
terminated  on account of death if the Optionee dies within thirty (30) days (or
such longer period of time as determined by the Board, in its discretion)  after
the Optionee's termination of Service.

              (iii) Other Termination of Service. If the Optionee's Service with
the Participating  Company Group terminates for any reason, except Disability or
death, the Option, to the extent  unexercised and exercisable by the Optionee on
the date on which the  Optionee's  Service  terminated,  may be exercised by the
Optionee within ninety (90) days (or such longer period of time as determined by
the Board,  in its  discretion)  after the date on which the Optionee's  Service
terminated, but in any event no later than the Option Expiration Date.

              (b) Extension if Exercise  Prevented by Law.  Notwithstanding  the
foregoing,  if the exercise of an Option within the applicable  time periods set
forth in Section 6.5(a) is prevented by the provisions of Section 11 below,  the
Option shall remain exercisable until ninety (90) days (or such longer period of
time as determined by the Board, in its discretion)  after the date the Optionee
is notified by the Company that the Option is  exercisable,  but in any event no
later than the Option Expiration Date.

              (c)   Extension   if   Optionee    Subject   to   Section   16(b).
Notwithstanding the foregoing,  if a sale within the applicable time periods set
forth in Section 6.5(a) of shares acquired upon the exercise of the Option would
subject the Optionee to suit under Section 16(b) of the Exchange Act, the Option
shall remain exercisable until the earliest to occur of (i) the tenth (10th) day
following  the  date on which a sale of such  shares  by the  Optionee  would no
longer be subject to such suit,  (ii) the one hundred and ninetieth  (190th) day
after the  Optionee's  termination  of Service,  or (iii) the Option  Expiration
Date.

         7. STANDARD FORMS OF OPTION AGREEMENT.

         7.1  General.  Unless  otherwise  provided by the Board at the time the
Option is granted,  an Option  shall comply with and be subject to the terms and
conditions  set forth in the standard forms of Option  Agreement  adopted by the
Board  concurrently  with its  adoption of the Plan and as amended  from time to
time.

         7.2 Authority to Vary Terms.  The Board shall have the  authority  from
time to time to vary the terms of any of the standard forms of Option  Agreement
described in this Section 7 either in connection  with the grant or amendment of
an individual  Option or in connection with the  authorization of a new standard
form or forms; provided, however, that the terms and conditions of any such new,
revised  or  amended  standard  form  or  forms  of  Option  Agreement  are  not
inconsistent with the terms of the Plan.

         8. CHANGE IN CONTROL.

                                       10
<PAGE>

         8.1 Definitions.

              (a) An  "Ownership  Change Event" shall be deemed to have occurred
if any of the  following  occurs with respect to the Company:  (i) the direct or
indirect sale or exchange in a single or series of related  transactions  by the
stockholders of the Company of more than fifty percent (50%) of the voting stock
of the Company;  (ii) a merger or consolidation in which the Company is a party;
(iii) the sale, exchange,  or transfer of all or substantially all of the assets
of the Company; or (iv) a liquidation or dissolution of the Company.

              (b) A "Change in Control" shall mean an Ownership  Change Event or
a series of related  Ownership  Change Events  (collectively,  a  "Transaction")
wherein the  stockholders of the Company  immediately  before the Transaction do
not  retain  immediately  after  the  Transaction,  in  substantially  the  same
proportions  as  their  ownership  of  shares  of  the  Company's  voting  stock
immediately before the Transaction,  direct or indirect beneficial  ownership of
more  than  fifty  percent  (50%)  of the  total  combined  voting  power of the
outstanding  voting stock of the Company or the  corporation or  corporations to
which  the   assets  of  the   Company   were   transferred   (the   "Transferee
Corporation(s)"),  as the case may be. For purposes of the  preceding  sentence,
indirect beneficial  ownership shall include,  without  limitation,  an interest
resulting from ownership of the voting stock of one or more corporations  which,
as  a  result  of  the   Transaction,   own  the   Company  or  the   Transferee
Corporation(s),  as the case may be,  either  directly  or  through  one or more
subsidiary  corporations.  The Board shall have the right to  determine  whether
multiple  sales or  exchanges  of the voting  stock of the  Company or  multiple
Ownership  Change  Events are  related,  and its  determination  shall be final,
binding and conclusive.

         8.2 Effect of Change in Control on Options. In the event of a Change in
Control,  the surviving,  continuing,  successor,  or purchasing  corporation or
parent corporation  thereof,  as the case may be (the "Acquiring  Corporation"),
may either assume the Company's rights and obligations under outstanding Options
or substitute for outstanding Options  substantially  equivalent options for the
Acquiring Corporation's stock. For purposes of this Section 8.2, an Option shall
be deemed  assumed if,  following the Change in Control,  the Option confers the
right to purchase in accordance with its terms and conditions, for each share of
Stock  subject to the Option  immediately  prior to the Change in  Control,  the
consideration  (whether stock,  cash or other securities or property) to which a
holder of a share of Stock on the  effective  date of the Change in Control  was
entitled.  Any  Options  which are  neither  assumed or  substituted  for by the
Acquiring  Corporation in connection with the Change in Control nor exercised as
of the date of the Change in Control shall terminate and cease to be outstanding
effective  as of  the  date  of  the  Change  in  Control.  Notwithstanding  the
foregoing,  shares  acquired  upon  exercise of an Option prior to the Change in
Control and any  consideration  received  pursuant to the Change in Control with
respect to such shares shall continue to be subject to all applicable provisions
of the Option Agreement  evidencing such Option except as otherwise  provided in
such Option Agreement.

         9. PROVISION OF INFORMATION.

         At least  annually,  copies of the  Company's  balance sheet and income
statement  for the just  completed  fiscal year shall be made  available to each
Optionee and  purchaser  of shares of Stock upon the exercise of an Option.  The
Company shall not be required to provide such information to key employees whose
duties  in  connection  with  the  Company  assure  them  access  to  equivalent
information.

                                       11
<PAGE>

         10. NONTRANSFERABILITY OF OPTIONS.

              During  the  lifetime  of  the   Optionee,   an  Option  shall  be
exercisable   only  by  the  Optionee  or  the  Optionee's   guardian  or  legal
representative.  No Option shall be assignable or  transferable by the Optionee,
except by will or by the laws of descent and distribution.

         11. COMPLIANCE WITH SECURITIES LAW.

              The grant of  Options  and the  issuance  of shares of Stock  upon
exercise  of  Options  shall  be  subject  to  compliance  with  all  applicable
requirements of federal,  state and foreign law with respect to such securities.
Options may not be exercised  if the  issuance of shares of Stock upon  exercise
would  constitute  a  violation  of any  applicable  federal,  state or  foreign
securities  laws or other law or  regulations or the  requirements  of any stock
exchange or market system upon which the Stock may then be listed.  In addition,
no  Option  may be  exercised  unless  (a) a  registration  statement  under the
Securities  Act shall at the time of  exercise  of the Option be in effect  with
respect to the shares issuable upon exercise of the Option or (b) in the opinion
of legal counsel to the Company, the shares issuable upon exercise of the Option
may be issued in accordance  with the terms of an applicable  exemption from the
registration requirements of the Securities Act. The inability of the Company to
obtain from any  regulatory  body having  jurisdiction  the  authority,  if any,
deemed by the Company's legal counsel to be necessary to the lawful issuance and
sale of any shares  hereunder  shall  relieve  the Company of any  liability  in
respect of the failure to issue or sell such  shares as to which such  requisite
authority  shall not have been  obtained.  As a condition to the exercise of any
Option, the Company may require the Optionee to satisfy any qualifications  that
may be necessary or appropriate,  to evidence compliance with any applicable law
or regulation and to make any representation or warranty with respect thereto as
may be requested by the Company.

         12. INDEMNIFICATION.

              In addition to such other  rights of  indemnification  as they may
have as members  of the Board or  officers  or  employees  of the  Participating
Company  Group,  members  of the  Board and any  officers  or  employees  of the
Participating  Company  Group  to whom  authority  to act for the  Board  or the
Company is delegated  shall be indemnified by the Company against all reasonable
expenses,  including  attorneys'  fees,  actually  and  necessarily  incurred in
connection with the defense of any action, suit or proceeding,  or in connection
with any appeal  therein,  to which they or any of them may be a party by reason
of any action taken or failure to act under or in  connection  with the Plan, or
any right granted hereunder,  and against all amounts paid by them in settlement
thereof  (provided  such  settlement  is approved by  independent  legal counsel
selected by the  Company) or paid by them in  satisfaction  of a judgment in any
such action,  suit or  proceeding,  except in relation to matters as to which it
shall be adjudged in such action,  suit or proceeding that such person is liable
for gross negligence,  bad faith or intentional misconduct in duties;  provided,
however,  that within sixty (60) days after the institution of such action, suit
or  proceeding,  such  person  shall  offer  to the  Company,  in  writing,  the
opportunity at its own expense to handle and defend the same.

                                       12
<PAGE>

         13. TERMINATION OR AMENDMENT OF PLAN.

              The Board may  terminate  or amend the Plan at any time.  However,
subject to changes in  applicable  law,  regulations  or rules that would permit
otherwise,  without the approval of the Company's  stockholders,  there shall be
(a) no increase in the maximum  aggregate  number of shares of Stock that may be
issued under the Plan (except by operation of the  provisions  of Section  4.2),
(b) no  change in the class of  persons  eligible  to  receive  Incentive  Stock
Options,  and (c) no other amendment of the Plan that would require  approval of
the Company's  stockholders  under any  applicable  law,  regulation or rule. No
termination or amendment of the Plan may adversely  affect any then  outstanding
Option or any unexercised portion thereof,  without the consent of the Optionee,
unless such termination or amendment is required to enable an Option  designated
as an  Incentive  Stock  Option to qualify as an  Incentive  Stock  Option or is
necessary to comply with any applicable law, regulation or rule.

         14. STOCKHOLDER APPROVAL.

              The Plan or any increase in the maximum aggregate number of shares
of Stock  issuable  thereunder  as  provided  in  Section  4.1 (the  "Authorized
Shares") shall be approved by the stockholders of the Company within twelve (12)
months of the date of adoption  thereof by the Board.  Options  granted prior to
stockholder  approval  of  the  Plan  or in  excess  of  the  Authorized  Shares
previously approved by the stockholders shall become exercisable no earlier than
the date of stockholder  approval of the Plan or such increase in the Authorized
Shares, as the case may be.

                                       13
<PAGE>

                                  PLAN HISTORY

April 12, 1999             Board  adopts  Plan,  with an initial  maximum  share
                           reserve of 4,000,000 shares, to become effective upon
                           the date of its approval by the shareholders.

June 21, 1999              Shareholders approve Plan.

March 14, 2002             Board  approves an increase in the maximum  number of
                           Common  Shares  that may be issued  pursuant to award
                           grants  made  under  the  Plan  by  1,000,000  Common
                           Shares,  raising  the total  number of Common  Shares
                           reserved for issuance thereunder to 5,000,000.

May 25, 2002               Shareholders approve the amendment to the Plan.<PAGE>

                                                                     Exhibit 4.2

THE  CORPORATION  WILL NOT TRANSFER THIS OPTION OR THE UNDERLYING  COMMON SHARES
UNLESS  (i) THERE IS AN  EFFECTIVE  REGISTRATION  COVERING  SUCH  OPTION OR SUCH
SHARES,  AS THE CASE MAY BE,  UNDER THE  SECURITIES  ACT OF 1933 AND  APPLICABLE
STATES  SECURITIES  LAWS,  (ii) IT FIRST  RECEIVES  A LETTER  FROM AN  ATTORNEY,
ACCEPTABLE TO THE BOARD OF DIRECTORS OR ITS AGENTS,  STATING THAT IN THE OPINION
OF THE  ATTORNEY  THE PROPOSED  TRANSFER IS EXEMPT FROM  REGISTRATION  UNDER THE
SECURITIES ACT OF 1933 AND UNDER ALL APPLICABLE  STATE SECURITIES LAWS, OR (iii)
THE TRANSFER IS MADE PURSUANT TO RULE 144 UNDER THE SECURITIES ACT OF 1933.

Void after 5:00 pm, New York Time on October 18, 2010.

                        OPTION TO PURCHASE COMMON SHARES

                                       OF

                                SPATIALIGHT, INC.

         THIS  IS  TO  CERTIFY  THAT,  FOR  VALUE  RECEIVED,   Robert  A.  Olins
("Optionee") is entitled to purchase,  subject to the provisions of this Option,
from Spatialight,  Inc., a New York corporation ("Corporation"),  at the closing
price on the NASDAQ Small Cap Market on October 18, 2000 which equaled $1.50 per
Share, up to 750,000 common shares of the Corporation, $0.01 per share par value
("Shares")  at any time  during the  period  commencing  on the date  hereof and
terminating  at 5:00 p.m.,  New York  Time,  on October  18,  2010 (the  "Option
Termination  Date"). The Shares deliverable upon the exercise of this Option are
hereinafter  sometimes  referred to as the "Underlying  Shares" and the exercise
price of this Option to purchase one Share is hereinafter  sometimes referred to
as the "Exercise Price." The Shares deliverable upon the exercise of the Options
are hereinafter sometimes also referred to as the "Option Shares."

         The Board of Directors of the  Corporation  authorized  the granting of
the Option on and as of October 18, 2000.

         This Option shall not be, nor is it intended to be, an "Incentive Stock
Option" within the meaning of Section 422(b) of the U.S.  Internal Revenue Code.
This Option shall be deemed a Non-Statutory stock option.

         This Option is not  granted  under,  and shall not be governed  by, the
"Spatialight,  Inc. 1999 Stock Option Plan" or the "1993  Nonstatutory  Employee
Stock  Option  Plan" of the  Corporation  or any other stock option plans now in
effect  or  hereafter  adopted  by the  Corporation,  but  this  Option  and the
Underlying  Shares shall be entitled to the benefits of  registration  under the
Securities Act to the extent of and in accordance with the provisions of Section
11(b) hereof.

SECTION 1. CONSIDERATION. This Option is granted to Optionee in consideration of
services  rendered by Optionee since June 16, 2000 to the  Corporation as Acting
Chief Executive  Officer  without  receiving any  compensation  for his services

<PAGE>

(except  for  this  Option)  and  this  Option  shall   constitute  the  maximum
compensation  to  which  Optionee  shall be  entitled  for his  services  to the
Corporation  as the Acting  Chief  Executive  Officer  or in any other  capacity
through March 31, 2001, but Optionee shall be entitled to retain this Option and
all of the benefits conferred by the Option, including the right to purchase the
Option  Shares upon  exercise  hereof,  in whole or in part,  upon the terms and
conditions set forth herein regardless of whether or not the Optionee  continues
to  serve  as  Acting  Chief  Executive  Officer  or  renders  services  to  the
Corporation in any other capacity through March 31, 2001.

SECTION 2. RESERVATION AND STATUS OF SHARES.  The Corporation hereby agrees that
at all times there shall be reserved for issuance and delivery  upon exercise of
this  Option such number of its Shares as shall be  required  for  issuance  and
delivery  upon  exercise of this Option,  and that such  Shares,  when issued in
accordance with the terms of this Option,  shall be validly issued,  fully paid,
and non-assessable.

SECTION  3.  FRACTIONAL  SHARES.   Fractional  Shares  or  script   representing
fractional Shares may be issued upon the exercise of this Option.

SECTION 4. EXERCISE OF THE OPTION

                  (a) Method of Exercise. Subject to the provisions hereof, this
         Option  may be  exercised,  in  whole  or in part,  during  the  period
         commencing on the date hereof and terminating on the Option Termination
         Date, by  presentation  and surrender  hereof to the Corporation at its
         principal office, or at the office of its stock transfer agent, if any,
         with the  Option  Exercise  Form  annexed  hereto  as  Exhibit  A, duly
         executed and  accompanied  by payment of the Exercise  Price (by any of
         the means  permitted  under  this  Section  4) for the number of Shares
         specified in such form.  Upon receipt by the Corporation of this Option
         at  its  principal  office,  or by  the  stock  transfer  agent  of the
         Corporation,  if any, at its office,  in proper form for exercise,  the
         Optionee  shall be  deemed to be the  holder  of  record of the  Option
         Shares  issuable  upon such  exercise,  notwithstanding  that the Share
         transfer  books  of the  Corporation  shall  then  be  closed  or  that
         certificates representing such Option Shares shall not then be actually
         delivered to the Optionee.

                  (b) Payment of Exercise  Price.  Except as otherwise  provided
         below, payment of the aggregate Exercise Price for the number of Shares
         for which the Option is being  exercised  shall be made (i) in cash, by
         check,  or  cash  equivalent,   (ii)  by  tender  to  the  Company,  or
         attestation  to the  ownership,  of whole  Shares owned by the Optionee
         having a fair market value (as determined by the Company without regard
         to any  restrictions  on  transferability  applicable to such Shares by
         reason  of  federal  or state  securities  laws or  agreements  with an
         underwriter  for the  Company)  not less  than the  aggregate  Exercise
         Price,  (iii) by means of a  Cashless  Exercise,  as defined in Section
         4(c)(ii), or (iv) by any combination of the foregoing.

                                       2
<PAGE>

                  (c) Limitations on Forms of Consideration.

                  (i)  Tender of  Shares.  Notwithstanding  the  foregoing,  the
         Option may not be exercised by tender to the Company, or attestation to
         the ownership,  of Shares to the extent such tender,  or attestation to
         the ownership, of Shares would constitute a violation of the provisions
         of any law,  regulation or agreement  restricting the redemption of the
         Company's  Shares.  (The Option may not be  exercised  by tender to the
         Company, or attestation to the ownership,  of Shares unless such Shares
         beneficially  have  been  owned by the  Optionee  for more than six (6)
         months).

                  (ii)  Cashless  Exercise.  A  "Cashless  Exercise"  means  the
         assignment  in a form  acceptable  to the Company of the  proceeds of a
         sale or loan with  respect to some or all of the Shares  acquired  upon
         the exercise of the Option pursuant to a program or procedure  approved
         by the  Company  (including,  without  limitation,  through an exercise
         complying with the provisions of Regulation T as promulgated  from time
         to time by the Board of Governors of the Federal Reserve  System).  The
         Company  reserves,  at any and all times,  the right,  in the Company's
         sole and absolute  discretion,  to decline to approve or terminate  any
         such  program  or  procedure.   Generally,  and  without  limiting  the
         Company's  absolute  discretion,  a  Cashless  Exercise  will  only  be
         permitted at such times during which the Shares  underlying this Option
         are publicly traded.

         (d)  Undertaking  With  Respect  to Tax  Obligations.  At the  time  of
         exercise of this Option, in whole or in part, or at any time thereafter
         as requested by the  Corporation,  the Optionee  shall  undertake to be
         responsible  for, to pay any to hold the Corporation  harmless from and
         against any  liabilities  for any sums required to satisfy any federal,
         state,  local and/or  foreign tax  obligations  (including  withholding
         obligations, if any) arising upon the exercise, in whole or in part, of
         this Option, the transfer, in whole or in party, of any Shares acquired
         upon  exercise of this Option or the operation of any law or regulation
         applicable to this Option or the exercise thereof, in whole or in part.
         Such  undertaking by the Option shall be in writing in form  reasonably
         satisfactory  to the Corporation and shall be submitted by the Optionee
         to the Corporation at such time as the Optionee  exercises this Option,
         in whole or in part.

         (e)  Condition to Grant and  Exercisability.  Notwithstanding  anything
         contained herein to the contrary,  in order to satisfy certain relevant
         legal and regulatory requirements, the grant and vesting of this Option
         shall be subject  to  ratification  and  approval  by the  holders of a
         majority  of the  Corporation's  then  outstanding  Shares,  and if the
         holders of such majority of the Corporation's  then outstanding  Shares
         do not ratify and  approve  the grant of this Option at the next Annual
         or Special Meeting of  Shareholders  of the  Corporation  within twelve
         (12) months after the date  hereof,  the Options  granted  hereby shall
         automatically terminate, be canceled in their entirety and the Optionee
         shall forfeit all rights with respect  thereto or otherwise  under this
         Agreement and this Option shall be of no further force of effect. Prior
         to  ratification  and  approval by the  Corporation's  Shareholders  as
         hereinabove provided, this Option shall not be exercisable, in whole or
         in part.

                                       3
<PAGE>

SECTION 5. EXCHANGE OR LOSS OF OPTION.

         (a) This Option is exchangeable,  without expense, at the option of the
         Optionee,  upon presentation and surrender hereof to the Corporation at
         its principal  office, or at the office of its stock transfer agent, if
         any,  for  other  Options  of  different  denominations  entitling  the
         Optionee  to  purchase,  in the  aggregate,  the same  number of Shares
         purchasable hereunder.

         (b) Upon receipt by the Corporation of an affidavit of loss which shall
         constitute evidence satisfactory to the Corporation of the loss, theft,
         destruction,  or  mutilation  of this  Option and (in the case of loss,
         theft, or destruction) of reasonably satisfactory indemnification,  and
         (in the case of  mutilation)  upon surrender and  cancellation  of this
         Option,  the Corporation  will execute and deliver a new Option,  which
         shall  constitute an additional  contractual  obligation on the part of
         the Corporation, whether or not this Option so lost, stolen, destroyed,
         or mutilated shall be at any time enforceable by anyone.

SECTION 6. NON-TRANSFER AND TERMINATION OF THE OPTION.

         (a)  Nontransferability  of the  Option.  The Option  may be  exercised
         during  the  lifetime  of the  Optionee  only  by the  Optionee  or the
         Optionee's guardian or legal  representative and may not be assigned or
         transferred  in any manner except by will or by the laws of descent and
         distribution.  Following the death of the Optionee,  the Option, to the
         extent  provided in Section  6(c),  may be exercised by the  Optionee's
         legal  representative  or by any  person  empowered  to do so under the
         deceased  Optionee's  will or under the then applicable laws of descent
         and distribution.

         (b)  Termination of the Option.  The Option shall  terminate and may no
         longer be exercised after the Option Termination Date.

SECTION 7. RIGHTS OF THE  OPTIONEE.  Except as provided in the last  sentence of
Section 1, the Optionee shall not, by virtue  hereof,  be entitled to any rights
as a shareholder in the Corporation,  either at law or equity. The rights of the
Optionee are limited to those  expressed in this Option and are not  enforceable
against the Corporation except to the extent set forth herein.

SECTION  8.  ANTI-DILUTION  PROVISIONS.   The  number  and  kind  of  securities
purchasable  upon the  exercise of this Option and the  Exercise  Price shall be
subject to adjustment from time to time as follows:

         (a) Reclassification of Shares. In case the Corporation shall (i) pay a
         dividend or make a distribution  on the  outstanding  Shares payable in
         Shares,  (ii) subdivide the outstanding Shares into a greater number of
         Shares,  (iii) combine the  outstanding  Shares into a lesser number of
         Shares,  or  (iv)  issue  by  reclassification  of  the  Shares  of the
         Corporation,  the Optionee of this Option shall thereafter be entitled,
         upon exercise,  to receive the number and kind of Shares which, if this
         Option had been  exercised  immediately  prior to the happening of such
         event,  the  Optionee  would  have owned  upon such  exercise  and been
         entitled  to receive  upon such  dividend,  distribution,  subdivision,

                                       4
<PAGE>

         combination,   or   reclassification.   Such  adjustment  shall  become
         effective  on the  day  next  following  (x)  the  record  date of such
         dividend or  distribution  or (y) the day upon which such  subdivision,
         combination, or reclassification shall become effective.

         (b) Consolidation,  Merger or Sale of the Corporation or its Assets. In
         case the  Corporation  shall  consolidate or merge into or with another
         corporation,  or in case the  Corporation  shall  sell or convey to any
         other  person or persons all or  substantially  all the property of the
         Corporation,  the Optionee shall thereafter be entitled, upon exercise,
         to receive  the kind and  amount of common  shares,  other  securities,
         cash, and property receivable upon such consolidation, merger, sale, or
         conveyance  by a holder of the number of Common Shares which might have
         been purchased upon exercise of this Option  immediately  prior to such
         consolidation,  merger,  sale, or  conveyance,  and shall have no other
         conversion  rights.  In any such event,  effective  provision  shall be
         made, in the certificate or articles of  incorporation of the resulting
         or surviving corporation,  in any contracts of sale and conveyance,  or
         otherwise so that,  so far as  appropriate  and as nearly as reasonably
         may be,  the  provisions  set forth  herein for the  protection  of the
         rights  of the  Optionee  of  this  Option  shall  thereafter  be  made
         applicable.

         (c)  Adjustment  of  Exercise  Price.  Whenever  the  number  of Shares
         purchasable  upon exercise of this Option is adjusted  pursuant to this
         Section   8,  the   Exercise   Price  per  Share   shall  be   adjusted
         simultaneously  by multiplying  that Exercise Price per Share in effect
         immediately  prior to such  adjustment  by a  fraction,  of  which  the
         numerator  shall be the number of Shares  purchasable  upon exercise of
         this  Option  immediately  prior to such  adjustment,  and of which the
         denominator  shall be the number of Shares so  purchasable  immediately
         after such  adjustment,  so that the aggregate  exercise  price of this
         Option remains the same.

         (d) Fractional  Shares. No adjustment in the number of Shares which may
         be purchased upon exercise of this Option shall be required unless such
         adjustment  would require an increase or decrease of more than .50 of a
         share in the number of the Shares which may be so  purchased  provided,
         however,  that any  adjustment  which by reason of this Section 8(d) is
         not required to be made shall be carried forward cumulatively and taken
         into account in any subsequent calculation. All calculations under this
         Section  8  shall  be  made  to the  nearest  cent  or to  the  nearest
         one-hundredth of a share, as the case may be.

         (e)  Distributions.  In the event  that at any time,  as a result of an
         adjustment  made pursuant to this Section 8, the Optionee  shall become
         entitled to receive  upon  exercise of this Option cash,  property,  or
         securities other than Shares, then references to Shares in this Section
         8 shall be deemed to apply,  so far as appropriate and as nearly as may
         be, to such cash, property, or other securities.

         (f) Form of Options.  Irrespective  of any  adjustments in the Exercise
         Price or in the number or kind of Shares  purchasable  upon exercise of
         this Option,  the form of Options  theretofore or thereafter issued may
         continue to express the same price and number and kind of Shares as are
         stated in this Option.

SECTION 9.  OFFICER'S  CERTIFICATE.  Whenever  the number or kind of  securities
purchasable upon exercise of this Option or the Exercise Price shall be adjusted
as required by the provisions of Section 8, the Corporation shall forthwith file
with its Secretary or Assistant  Secretary at its

                                       5
<PAGE>

principal  office  and with its  stock  transfer  agent,  if any,  an  officer's
certificate showing the adjusted number and kind of securities  purchasable upon
exercise of this Option and the adjusted  Exercise  Price  determined  as herein
provided and setting forth in reasonable detail such facts as shall be necessary
to show the reason for and the manner of computing such  adjustments.  Each such
officer's  certificate  shall be made  available  at all  reasonable  times  for
inspection by the Optionee and the Corporation shall,  forthwith after each such
adjustment, mail by certified mail a copy of such certificate to the Optionee.

SECTION 10. NOTICES TO OPTIONEE. So long as this Option shall be outstanding, if
the Corporation  shall propose to take any action that would cause an adjustment
to be made pursuant to Section 8, the  Corporation  shall mail by certified mail
to the Optionee,  before,  or no later than 15 days after, the day on which such
adjustment would become  effective,  a notice setting forth in reasonable detail
the action so taken.

SECTION 11. (A) RESTRICTIONS ON GRANT OF THE OPTION AND ISSUANCE OF SHARES.  The
grant of the Option and the issuance of Shares upon exercise of the Option shall
be subject to compliance with all applicable  requirements of federal,  state or
foreign law with respect to such securities.  The Option may not be exercised if
the  issuance of Shares  upon  exercise  would  constitute  a  violation  of any
applicable federal, state or foreign securities laws or other law or regulations
or the requirements of any stock exchange or market system upon which the Shares
may then be listed.  In addition,  the Option may not be exercised  unless (i) a
registration statement under the Securities Act shall at the time of exercise of
the Option be in effect with respect to the Shares issuable upon exercise of the
Option or (ii) in the  opinion  of legal  counsel  to the  Company,  the  Shares
issuable upon exercise of the Option may be issued in accordance  with the terms
of an applicable exemption from the registration  requirements of the Securities
Act. THE OPTIONEE IS CAUTIONED  THAT THE OPTION MAY NOT BE EXERCISED  UNLESS THE
FOREGOING CONDITIONS ARE SATISFIED. ACCORDINGLY, THE OPTIONEE MAY NOT BE ABLE TO
EXERCISE THE OPTION WHEN DESIRED EVEN THOUGH THE OPTION IS VESTED. The inability
of the  Company to obtain  from any  regulatory  body  having  jurisdiction  the
authority,  if any, deemed by the Company's legal counsel to be necessary to the
lawful  issuance and sale of any Shares  subject to the Option shall relieve the
Company of any  liability in respect of the failure to issue or sell such Shares
as to which  such  requisite  authority  shall  not  have  been  obtained.  As a
condition to the exercise of the Option, the Company may require the Optionee to
satisfy any  qualifications  that may be necessary or  appropriate,  to evidence
compliance with any applicable law or regulation and to make any  representation
or warranty with respect thereto as may be requested by the Company.

(B) It is intended that this Option and all of the Underlying Shares shall be

included in the Corporation's existing Form S-8 Registration Statement or if not
so  included,  such Form S-8  Registration  Statement  is to be amended for that
purpose (or a separate Form S-8  Registration  Statement (or its successor Form)
is to be filed by the  Corporation) and rendered under the Securities Act by not
later than three business days after the date of convening the Annual or Special
Meeting of Shareholders of the Corporation referred to in Section 4(e) hereof.

SECTION 12. NOTICE. Any notice or other  communication  required or permitted to
be given  hereunder  shall be in writing and shall be mailed by certified  mail,
return receipt requested,  or delivered against receipt, if to the Optionee,  to
Robert A.  Olins,14  East 82nd  Street,  New York,  New York 10028 and if to the
Corporation,  at its principal  office,  Spatialight,  Inc., 9

                                       6
<PAGE>

Commercial  Blvd.,  Suite 200, Novato,  CA 94949 or to such other addresses as a
party  shall  notify  the other  party in  writing in the form set forth in this
Section 12. Any notice or other  communication  given by certified mail shall be
deemed given at the time of certification thereof,  except for a notice changing
a party's address which shall be deemed given at the time of receipt thereof.

SECTION 13.  DEFINITIONS.  In addition to the terms defined  herein,  as used in
this Option the following terms shall have the following meanings:

         (a)      "Board" means the Board of Directors of the Corporation.

         (b)      "Cashless  Exercise"  has the  meaning  set  forth in  Section
                  4(d)(ii).

         (c)      "Code"  means the US Internal  Revenue Code of 1986 as amended
                  to date.

         (d)      "Corporation" means Spatialight, Inc., a New York corporation.

         (e)      "Exchange Act" means the  Securities  Exchange Act of 1934, as
                  amended.

         (f)      "Exercise  Price" means the  exercise  price of this Option to
                  purchase  one  Share  and as  set  forth  in the  introductory
                  paragraph of this Option.

         (g)      "Optionee"  means  Robert  A.  Olins,  his  guardian,   heirs,
                  administrators and personal representative.

         (h)      "Option Shares" means the Shares deliverable upon the exercise
                  of the Option.

                  (i) "Option  Termination Date" means the period terminating at
                  5:00 pm., New York time,  on October 18, 2010 after which time
                  the  Options  granted  under  this  Option  may not  longer be
                  exercised.

         (j)      "Securities Act" means the Securities Act of 1933, as amended.

         (k)      "Shares"  has  the  meaning  set  forth  in  the  introductory
                  Paragraph of this Option.

         (l)      "Underlying  Shares"  means the  Shares  deliverable  upon the
                  exercise of the Option.

SECTION 14. BINDING EFFECT.  The provisions of this Option shall be binding upon
and inure to the  benefit of (a) the  parties  hereto,  (b) the  successors  and
assigns  of  the   Corporation,   and  (c)  the  successors,   assigns,   heirs,
administrators and personal representative of the Optionee.

SECTION 15. LAW GOVERNING.  This Agreement shall be governed by and construed in
accordance with the laws of the State of New York applicable to agreements to be
entered into and performed entirely within the State of New York.

                                       7
<PAGE>

SECTION 16. TITLES AND  CAPTIONS.  All section  titles or captions  contained in
this  Agreement  are for  convenience  only and shall not be deemed  part of the
context nor effect the interpretation of this Agreement.

SECTION 17.  COMPUTATION  OF TIME.  In computing  any period of time pursuant to
this  Agreement,  the day of the act, event or default from which the designated
period of time begins to run shall be included, unless it is a Saturday, Sunday,
or a legal holiday, in which event the period shall begin to run on the next day
which is not a Saturday,  Sunday,  or legal  holiday,  in which event the period
shall  run  until the end of the next day  thereafter  which is not a  Saturday,
Sunday, or legal holiday.

SECTION 18.  PRESUMPTION.  This  Agreement or any section  thereof  shall not be
construed  against any party due to the fact that said  Agreement or any section
thereof was drafted by said party.

SECTION 19.  FURTHER  ACTION.  The parties  hereto shall execute and deliver all
documents,  provide all  information and take or forbear from all such action as
may be necessary or appropriate to achieve the purposes of the Agreement.

SECTION 20. PARTIES IN INTEREST.  Nothing herein shall be construed to be to the
benefit of any third party,  nor is it intended that any provision  shall be for
the benefit of any third party.

SECTION 21. ENTIRE  AGREEMENT.  This Option sets forth the entire  agreement and
understandings  of  the  parties  relating  to the  subject  matter  hereof  and
supersedes all prior  agreements,  arrangements and  understandings,  written or
oral with respect to the subject matter hereof.

                                  * * * * * * *

                  [REMAINDER OF PAGE INTENTIONALLY LEFT BLANK]

                                       8
<PAGE>

   IN WITNESS  WHEREOF,  the parties have duly executed this Agreement as of the
date first above written.

                                     SPATIALIGHT, INC.

                                     By: /s/ LAWRENCE MATTESON
                                         ---------------------------------------
                                         Name:  Lawrence Matteson
                                         Title: Member of Board of Directors

                                     By: /s/ STEVEN F. TRIPP
                                         ---------------------------------------
                                         Name:  Steven F. Tripp
                                         Title: Member of Board of Directors

                                     OPTIONEE

                                         /s/ ROBERT A. OLINS
                                     -------------------------------------------
                                     Name: Robert A. Olins

                                       9
<PAGE>

                                    EXHIBIT A

                              OPTION EXERCISE FORM

To:      Spatialight, Inc.

(1)      The       undersigned       hereby       elects       to       purchase
         [_____________________________________]  Common Shares, $0.01 par value
         (the  "Shares")  of  Spatialight  pursuant to the terms of the attached
         Option to Purchase  Shares of  Spatialight,  Inc. (the  "Option").  All
         references  and all terms used  herein and not  defined  shall have the
         meaning ascribed in the Option.

(2)      The undersigned  hereby confirms and  acknowledges  that payment of the
         aggregate  Exercise Price for the number of Shares for which the Option
         is  being  exercised  has  been  made  pursuant  to one or  more of the
         following  Methods of  Exercise:  (A) paid in cash,  by check,  or cash
         equivalent pursuant to Section 4(b)(i), (B) by tender to the Company or
         attestation  to the  ownership,  of whole  Shares owned by the Optionee
         having a fair market value not less than the aggregate  Exercise  Price
         pursuant  to  Section  4(c)(i),  (C) by means of a  Cashless  Exercise,
         pursuant  to  Section  4(c)(ii),  or  (D)  by  any  combination  of the
         foregoing.

(3)      The undersigned acknowledges and confirms that (A) that the exercise of
         the Option shall not violate the  restrictions set forth in Section 11,
         (B) that the Shares are being acquired by the undersigned solely of the
         account of the  undersigned  and not as a nominee for any other  party,
         and for investment,  and that the undersigned will not offer,  sell, or
         otherwise  dispose of any such Shares except under  circumstances  that
         will not result in a violation of the registration  requirements of the
         Securities  Act of 1933, as amended,  or any state  securities  laws or
         pursuant to an exemption therefrom, including Rule 144 of such Act.

(4)      Please issue a certificate or certificates  representing said Shares in
         the name of the undersigned as specified below:

-------------------------------------
Print Name
Address:

-------------------------------------
Signature

-------------------------------------
Date

                                       10

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