Exhibit 10.4

EMPLOYMENT AGREEMENT

This EMPLOYMENT
AGREEMENT (the Agreement) made as of this 2ndday of April, 2009, and shall be effective January 1, 2009 (the Effective
Date), by and between the DOWNS RACING L.P., a Pennsylvania limited partnership (the Employer), acting through Mohegan Commercial Ventures PA, LLC, its General Partner, a Pennsylvania limited liability company (General
Partner) whose sole member is the Mohegan Tribal Gaming Authority (the Authority), having an address c/o the Mohegan Tribal Gaming Authority, One Mohegan Sun Boulevard, Uncasville, Connecticut 06382, and ROBERT SOPER ., residing at
203 Greystone Drive, Shavertown, Pennsylvania 18708 (Executive).

WITNESSETH:

WHEREAS, the Employer owns and operates, among other things, a harness racetrack and casino located in Wilkes-Barre, Pennsylvania known as Mohegan Sun at
Pocono Downs, along with several off-track wagering facilities located in the State of Pennsylvania (as presently existing and hereafter developed, the Business); and

WHEREAS the Employer is desirous of retaining Executive as its President and General Manager for the Business and assuring that Executive has the
authority to fully carry out his duties hereunder by being responsible to the Employer, acting through its General Partner.

NOW,
THEREFORE, in consideration of the promises and the mutual covenants, terms and conditions hereinafter set forth, and for other good and valuable consideration, the receipt and sufficiency whereof is specifically acknowledged, the parties hereto
hereby agree as follows:



| | 1. | Termination of all Prior Agreements
| | -- | -----------------------------------

Executive and Employer mutually agree that effective with the date first written on this Agreement, all prior agreements, written or oral, shall be terminated and neither party thereto shall have any further obligations to the other
thereunder.



| | 2. | Nature of Services and Duties
| | -- | -----------------------------

(A) The
Employer hereby agrees to continue to employ Executive as its President and General Manager upon the terms set forth herein, and Executive hereby accepts such continued employment.

(B) Executive shall perform such duties and services of an executive, managerial and administrative nature as are customary for a President and General
Manager and which, consistent with the foregoing, the Employer may from time to time through communication from the Chief Executive Officer or the Chief Operating Officer of the Authority, acting on behalf of



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the General Partner of the Employer, hereafter assign to him. Such duties shall include, but not be limited to, (i) in coordination with the Chief
Executive Officer and Chief Operating Officer of the Authority, acting on behalf of the General Partner of the Authority, oversee the financial reporting and treasury activities of the Employer, the strategic direction of the Employers
business development, and the financial performance of the Business, (ii) in coordination with and with the direction of the Chief Executive Officer and the Chief Operating Officer of the Authority, acting as aforesaid, oversee the operations
of the Business; and (iii) attend professional training and continuing professional education events as approved by the Chief Executive Officer or the Chief Operating Officer of the Authority, acting as aforesaid. Executive shall report
exclusively to the Chief Executive Officer and the Chief Operating Officer of the Authority, acting on behalf of the General Partner of the Employer. The Employer shall not restrict, reduce or otherwise limit Executives responsibility or
authority without his consent; provided, however, that the Executive shall comply with the General Managers Handbook as hereafter adopted by the Authority. Executive shall comply with Employers policies, including, without limitation,
the standards of personal conduct set forth in Mohegan Sun at Pocono Downs Policy #27, as amended from time to time.

(C) Executive shall
devote his best efforts and ability and all required business time to the performance of his duties and responsibilities hereunder to achieve the goals set forth in the Employers annual business plan. Executive shall perform all of his duties
to the Employer faithfully, competently, and diligently.

(D) Except for actions of the Executive that could be the basis for termination
for Cause as set forth in Paragraph 9(C), below, the Employer shall indemnify, defend, and hold Executive harmless, including the payment of reasonable attorney fees, if the Employer does not directly provide Executives defense, from and
against all claims made by anyone, including, but not limited to, a corporate entity, company, other employee, agent, patron, tribal member, or any member of the general public with respect to any claim that asserts as a basis, any acts, omissions,
or other circumstances involving the performance of Executive.



| | 3. | Effective Date
| | -- | --------------

This Agreement shall be
effective from the date set forth in the opening paragraph of this Agreement (the Effective Date).



| | 4. | Term
| | -- | ----

This Agreement shall govern
Executives employment with the Employer from the Effective Date through and including June 30, 2011. This Agreement, including this paragraph, shall automatically renew for an additional term of three (3) years unless either party
shall notify the other of its intention to terminate, or unless otherwise terminated as provided herein. Any such notice of intention to terminate shall be delivered not later than one hundred and eighty (180) days prior to the end of the then
current term and shall be effective at the end of such term, except as otherwise provided herein.



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| | 5. | Base Annual Salary
| | -- | ------------------

Commencing with the
Effective Date and until January 31, 2010, the Employer shall pay Executive a Base Annual Salary in the amount of $385,679.26 in equal weekly installments. Commencing January 1, 2010, and on each January 1 thereafter during the term
of this Agreement, the Base Annual Salary shall be increased in an amount mutually agreed to by Executive and the Employer, which amount shall in no event be less than 13% of the then current Base Annual Salary for the year commencing
January 1, 2010 and 5% of the then current Base Annual Salary each year thereafter.



| | 6. | Annual Bonus
| | -- | ------------

The Employer may determine an
annual bonus payable to Executive, the amount of which shall be based upon the business plan and financial goals of the Employer as established at the beginning of each fiscal year. The annual bonus, if any, for the previous fiscal year shall be
paid no later than November 30 of each year during the term.



| | 7. | Life Insurance
| | -- | --------------

The Employer may, within its
discretion, at any time during the term of this Agreement apply for and procure as owner and for its own benefit insurance on the life of Executive, in such amounts and in such form as the Employer may choose. Executive shall have no interest
whatsoever in any such policies, but he shall upon request by the Employer submit to such medical examinations, supply such information, and execute such documents as may be required by the Employer or the insurance companies to whom the Employer
has made application.



| | 8. | Reimbursement of Certain Expenses; Vacation; Medical Benefits
| | -- | -------------------------------------------------------------

(A) The Employer will reimburse Executive for necessary and reasonable business expenses incurred by him in the performance of his duties hereunder, provided, that he shall obtain the approval for such expenditures in
accordance with the procedures adopted by the Employer from time to time and generally-applicable to its executive-level employees, including such procedures with respect to submission of appropriate documentation and receipts. Failure by Executive
to follow such procedures shall entitle the Employer to refuse to reimburse Executive for such expenses until such time as such failure has been cured. It is understood and agreed that Employer shall not be responsible for any expense of Executive
for leasing or operation of a vehicle for Executive (except that Executive shall be entitled to reimbursement for the expenses, including mileage, actually incurred in connection with his use of his automobile for the business-related purposes of
the Employer), nor for any expense of Executive for legal expenses or tax planning expenses incurred by Executive in interpreting this or any other agreement between Executive and Employer.

(B) Executive shall be entitled to four (4) weeks paid vacation per full year of employment.

(C) Executive shall participate in such employee benefit plans and programs (including but not limited to medical and life insurance programs) as are now
or may hereafter be adopted



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by the Employer for its executive employees and their families. The life insurance program shall provide term life insurance coverage on Executives
life for the benefit of Executives designated beneficiary in an amount not less than Executives Base Annual Salary. Employer shall continue to provide such medical insurance coverage for a period of one (1) year after any
termination by Employer of Executives employment hereunder if such termination was without Cause, as hereinafter defined.



| | 9. | Disability; Termination
| | -- | -----------------------

(A) If Executive
shall become unable to perform all of his duties set forth in Paragraph 1 of this Agreement due to mental or physical disability, all compensation and benefits provided in this Agreement shall continue to be paid and provided in full for a period
not exceeding one hundred and eighty (180) consecutive days. Upon completion of such one hundred and eighty (180) days (or if Executive shall be disabled by the same incapacity for an aggregate period of one hundred and eighty
(180) days in any period of three hundred and sixty (360) consecutive days by the same incapacity) the Employer may, at its sole option, suspend Executives employment until Executive is recovered (as reasonably certified by a
physician designated by the Employer) from such mental or physical disability. During any period of suspension on account of disability, Executive shall receive only such compensation as may be provided under the disability insurance described in
Paragraph 9(B). If the physician designated by the Employer certifies that Executive is permanently disabled, Employers obligations under this Agreement shall cease; provided, however, Executive shall be entitled to the disability benefits set
forth in Paragraph 9(B), below.

(B) Employer, at the sole expense of Employer, shall provide disability insurance coverage for Executive.
Such policy shall provide payment of 50% of Executives Base Annual Salary commencing with suspension or termination of employment, pursuant to Paragraph 9(A), above, by reason of physical or mental disability, and for a period of two
(2) years if such disability was the result of injury, and to age 65 if such disability was the result of physical or mental illness. In the event the Employer is unable to obtain disability insurance in the amount required, or is unable to
obtain all or part of such insurance at standard rates, the Employer shall at its option obtain part or all of such insurance at non-standard rates or shall self-insure in whole or in part for the time periods set forth in this paragraph.

(C) Subject to the provisions of this paragraph, the Employer may terminate Executives employment for Cause, defined as
(i) Executives violation of the restriction contained in Paragraph 10 of this Agreement, (ii) the loss or suspension by the Commonwealth of Pennsylvania of Executives key qualifier license and/or other required license for
casino gaming, (iii) Executives conviction of any crime involving fraud, theft or moral turpitude, or (iv) Executives intentional or material breach of his obligations under this Agreement. Employer may suspend Executive
without pay upon Executives arrest for any alleged crime against the Employer, the General Partner or any of their affiliates. In the event that Executive is found not guilty or otherwise exonerated for an alleged crime against
Employer, the General Partner or any of their affiliates, Executives suspended pay shall be reimbursed to him.



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Except in the event of suspension upon Executives arrest or termination upon conviction of a crime,
if Employer desires to terminate Executive for Cause, Employer shall give written notice specifying the act(s) claimed to constitute cause and specifying an effective date of termination, which date shall be no sooner than thirty (30) days
after the giving of such notice. Employer may, in its sole discretion, give Executive an opportunity to rectify the reasons for termination. In the event Executive fails to rectify the act(s) claimed to constitute cause as set forth in the notice of
termination, Executives employment with the Employer shall cease effective upon the date provided in the notice of termination. If such termination is for Cause, then Executive shall not be entitled to any further compensation from and after
the date of termination.

(D) Subject to the provisions of this paragraph, the Employer may terminate Executives employment other
than for Cause, as defined above. In the event of termination other than for Cause, Executive shall be paid, following termination, his Base Annual Salary from the date of termination to the expiration date of this Agreement (without regard to any
renewal right after the date of termination), except in the event of sale of the Business. In the event of sale of the Business and Executive is not employed in substantially the same position at the same base compensation and bonus compensation, if
any, by the purchaser of the Business or by another casino operated directly or indirectly by the Mohegan Tribal Gaming Authority, the Executive shall be paid, following termination upon the sale of the Business, his Base Annual Salary from the date
of termination and for a period equal to the lesser of (i) one (1) year or (ii) to the expiration date of this Agreement (without regard to any renewal right after the date of termination). Such Base Annual Salary shall be payable to
Executive in the same amount and at the same intervals as would have been paid had his employment continued, and all payments of such Base Annual Salary shall be paid to the Executives estate in the event of Executives death prior to the
expiration date of this Agreement. For purposes of this Agreement, a sale of the Business shall mean a transfer of a controlling interest in the Employer or a transfer of all or substantially all of the assets constituting the Business.

(E) In the event that Executive voluntarily terminates his employment hereunder, Executives employment shall cease as of the date
provided in Executives notice to Employer of his voluntary termination, and thereafter, provided that the Employer shall not then be in material breach of this Agreement, Executive shall not be entitled to any further compensation hereunder.



| | 10. | Covenants of Executive Not to Compete
| | --- | -------------------------------------

Executive acknowledges that with respect to the Business, as defined above, and in the states of Pennsylvania, New Jersey, New York, Connecticut, Massachusetts, Rhode Island, Vermont, New Hampshire and Maine (the Restricted
Area) (i) the Employer is one of a limited number of entities engaged in the Business; (ii) his services to the Employer are special and unique; (iii) his work for the Employer has given him and will continue to give him access
to confidential information concerning the Employer; and (iv) he has the means to support himself and his dependents other than by engaging in the Business of the Employer and the provisions of this Paragraph 10 will not impair such ability.
Accordingly, in order to induce the Employer to enter into this Agreement, Executive covenants and agrees that:

(A) So long as Executive is
employed by Employer under this Agreement and for a period of twelve (12) months following the voluntary or involuntary termination of his employment (the Restricted Period), Executive shall not, in the Restricted Area, entertain or
accept any offer of employment and shall not compete in any manner, either directly or indirectly, including, without



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limitation, as an employee or independent contractor, investor, partner, shareholder, officer, director, principal, agent or trustee of any entity engaged in
casino gaming, in the Restricted Area, without the express written approval of the Employer; provided, however, that ownership of less than five percent (5%) of the shares of a publicly traded corporation engaged in casino gaming shall not be
deemed to violate this paragraph. Notwithstanding anything provided herein to the contrary, the Restricted Period shall not apply after the initial term or renewal term, if applicable, has naturally expired.

(B) During the Restricted Period Executive shall not, directly or indirectly, hire or solicit any employee of the Employer or any of its affiliates or
encourage any such employee to leave such employment.



| | 11. | Confidential Information
| | --- | ------------------------

Executive agrees
to receive Confidential Information (as hereinafter defined) of the Employer or any of its affiliates in confidence, and not to disclose to others, assist others in the application of, or use for his own gain, such information, or any part thereof,
unless and until it has become public knowledge, has come into the possession of such other or others by legal and equitable means, or if required to do so by order of a court of competent jurisdiction. Executive further agrees that, upon
termination of his employment with the Employer, all documents, records, notebooks and similar repositories of or containing Confidential Information, including copies thereof, then in Executives possession, whether prepared by him or others,
will be left with or returned to the Employer. For purposes of this Paragraph 11, Confidential Information means information disclosed to Executive or known by Executive as a consequence of or arising from or out of his employment by the
Employer, not generally known in the industry in which the Employer is or may become engaged about the Employers Business or the business of its affiliates, products, processes and/or services. Executives obligations under this Paragraph
11 shall survive any termination or expiration of this Agreement and Executives employment hereunder.



| | 12. | Rights and Remedies Upon Breach.
| | --- | --------------------------------

Executive
acknowledges and agrees that a violation of any provision of Paragraph 10 or 11 of this Agreement (the Restrictive Covenants) shall cause irreparable harm to the Employer, and the Employer shall be entitled to specific performance of
this Agreement or an injunction without proof of special damages, together with costs and attorneys fees incurred by the Employer in enforcing its rights under this Agreement. If Executive breaches, or threatens to commit a breach of any of
the Restrictive Covenants, the Employer shall have the following rights and remedies, each of which rights and remedies shall be independent of the other and severally enforceable, and all of which rights and remedies shall be in addition to, and
not in lieu of, any other rights and remedies available to the Employer under law or in equity;



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(A) The right and remedy to have the Restrictive Covenants specifically enforced by any court of
competent jurisdiction including, without limitation, the right to entry against Executive of restraining orders and injunctions (preliminary, mandatory, temporary and permanent), without proof of special damages, against violations of such
covenants, threatened or actual, and whether or not then continuing, it being acknowledged and agreed that any such breach or threatened breach will cause irreparable injury to the Employer and that money damages will not provide an adequate remedy
to the Employer; and

(B) The right and remedy to require Executive to account for and pay over to the Employer all compensation, profits,
monies, accruals, increments or other benefits derived or received by Executive as the result of any transaction constituting a breach of the Restrictive Covenants. The Employer may set off any amounts due it under this Paragraph 12(B) against any
amounts owed to Executive under Paragraph 5, 6 or 9.



| | 13. | Notice
| | --- | ------

All notices hereunder shall be in
writing. Any notice, request, information, legal process, or other instrument to be given or served hereunder by any party to another shall be deemed given or served hereunder by any party to the other if either delivered personally or sent by
prepaid registered or certified mail, return receipt requested. Any such notice to the Employer shall be sent to the address set forth in the introductory paragraph of this Agreement, to the attention of the Chief Executive Officer of the Authority
with a copy to the Chairman of the Management Board of the Authority. Any such notice to Executive shall be sent to his residential address as set forth in the introductory paragraph of this Agreement. Either party may, through written notice to the
other party, change the address of notice as provided in this paragraph.



| | 14. | Entire Agreement; Modification
| | --- | ------------------------------

Except as
otherwise provided herein, this Agreement supersedes and cancels any and all prior agreements between the parties hereto, express or implied, relating to the subject matter hereof. This Agreement sets forth the entire agreement of the parties hereto
with respect to the subject matter hereof. This Agreement may not be changed, modified, amended or altered except in a writing signed by both parties.



| | 15. | Non-Waiver
| | --- | ----------

The failure or refusal of either
party to insist upon the strict performance of any provision of this Agreement or to exercise any right in any one or more instances or circumstances shall not be construed as a waiver or relinquishment of such provision or right and shall in no way
effect such provision or right, nor shall such failure or refusal be deemed a custom or practice contrary to such provision or right.



| | 16. | Severability
| | --- | ------------

If any paragraph, term or
provision of this Agreement shall be held or determined to be unenforceable, the balance of this Agreement shall nevertheless continue in full force and effect and unaffected by such holding or determination. In addition, in any such event, the
parties agree



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that it is their intention and agreement that any such paragraph, term or provision which is held or determined to be unenforceable as written, shall
nonetheless be enforced and binding to the fullest extent permitted by law as though such paragraph, term or provision had been written in such a manner to such an extent as to be enforceable under the circumstances. Without limitation of the
foregoing, with respect to any Restrictive Covenant contained herein, if it is determined that any such provision is excessive as to duration or scope, it is intended that it nonetheless be enforced for such shorter duration or with such narrower
scope as will render it enforceable.



| | 17. | Governing Law
| | --- | -------------

This Agreement shall be
construed in accordance with the laws of the State of Connecticut without regard to its conflict of laws provisions, and the parties agree that only the federal and state courts located in the State of Connecticut shall have jurisdiction to enforce
the terms of this Agreement.



| | 18. | Limited Waiver of Sovereign Immunity
| | --- | ------------------------------------

To the
extent applicable, the Employer hereby waives its sovereign immunity from suit for claims by the Executive for the enforcement of this Agreement and any remedies for breach thereof under Connecticut law. Nothing herein shall limit the
Executives right to proceed with any claims otherwise allowed under the laws of the Mohegan Tribe of Indians of Connecticut. The Employer hereby consents to personal jurisdiction and venue in any court of the State of Connecticut or any
federal court sitting in the State of Connecticut and hereby waives any claim that it may have that such court is an inconvenient forum for the purposes of any proceeding arising under this Agreement as aforesaid and, with respect to a proceeding in
a court of the State of Connecticut or a federal court sitting in the State of Connecticut, any requirement that tribal remedies must be exhausted.



| | 19. | Dispute Resolution
| | --- | ------------------

Except as otherwise
provided herein, whenever during the term of this Agreement, any disagreement or dispute arises between the parties as to the interpretation of this Agreement or any rights or obligations arising hereunder, such matters shall be resolved, whenever
possible, by meeting and conferring. Any party may request such a meeting by giving notice to the other, in which case such other party shall make itself available within seven (7) days thereafter. If such matters cannot be resolved within ten
(10) days after such meeting, either party may seek a resolution by binding arbitration in accordance with the then prevailing rules of the American Arbitration Association (or any successor thereto to the extent not inconsistent herewith),
upon notice to the other party of its intention to do so. The parties agree that in any such arbitration each party shall be entitled to discovery as provided by the Federal Rules of Civil Procedure. All hearings shall be conducted in Hartford
County, Connecticut within fifteen (15) days after the arbitrator is selected and shall be conducted in his or her presence. The decision of the arbitrator will be final and binding on the parties. The costs and expenses of the arbitration
shall be shared equally by the parties.



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| | 20. | Headings
| | --- | --------

The headings of this Agreement are
inserted for convenience only and shall not be considered in construction of the provisions hereof.



| | 21. | Assignment and Successors; Binding Effect
| | --- | -----------------------------------------

The rights and obligations of the Employer under this Agreement shall inure to the benefit of and shall be binding upon the successors of the Employer and may be assigned by the Employer, for all or any part of the term hereof, provided
that the Employer shall continue to be financially responsible to Executive hereunder. Executive shall have no right to assign, transfer, pledge or otherwise encumber any of the rights, nor to delegate any of the duties created by this Agreement
without prior written consent of the Employer. Subject to the foregoing, this Agreement shall be binding upon and inure to the benefit of the Employer, its successors and assigns, and Executive, his heirs and legal representatives.

IN WITNESS WHEREOF, the Employer has caused this Agreement to be executed by Bruce S. Bozsum, acting in his capacity as the Chairman of the Management
Board of the Authority; Mitchell G. Etess has affixed his signature hereto signifying his assent to the Agreement; and Executive has affixed his signature hereto, on the date and year first above written.



|                  |  |                                                          |  |            |  | 
|----------------- |  | -------------------------------------------------------- |  | ---------- |  | 
|EMPLOYER:         |  |                                                          |  | EXECUTIVE:
|DOWNS RACING L.P. |  |                                                          |  |           
|By:               |  | Mohegan Commercial Ventures PA, LLC, Its General Partner |  |            |  | 



|    |  |                                      |  |  |  |                 
|--- |  | ------------------------------------ |  |  |  | ----------------
|By: |  | /s/ Bruce S. Bozsum                  |  |  |  | /s/ Robert Soper
|    |  | Bruce S. Bozsum, Chairman,           |  |  |  | Robert Soper    
|    |  | Management Board of the Mohegan      |  |  |  |                 
|    |  | Tribal Gaming Authority, Sole Member |  |  |  |                 



|    |  |                                   |  |  |  | 
|--- |  | --------------------------------- |  |  |  | 
|By: |  | /s/ Mitchell Grossinger Etess     |  |  |  | 
|    |  | Mitchell Etess, President and CEO |  |  |  | 
|    |  | Mohegan Tribal Gaming Authority   |  |  |  | 



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|                     |  |   |  |                    |  |              
|-------------------- |  | - |  | ------------------ |  | -------------
|STATE OF CONNECTICUT |  | ) |  |                    |  |              
|                     |  | ) |  | ss. Uncasville, CT |  | April 2, 2009
|COUNTY OF NEW LONDON |  | ) |  |                    |  |              

Personally appeared Bruce S. Bozsum, Chairman of the Management Board of the MOHEGAN TRIBAL GAMING
AUTHORITY, sole member of MOHEGAN COMMERCIAL VENTURES PA, LLC, General Partner of DOWNS RACING L.P., signer and sealer of the foregoing instrument, and acknowledged the same to be his free act and deed and the free act and deed of Downs Racing L.P.,
before me.



/s/ Donna G. KuflikNotary PublicMy Commission Expires: October 31, 2012




|                             |  |   |  |     |  |              
|---------------------------- |  | - |  | --- |  | -------------
|COMMONWEALTH OF PENNSYLVANIA |  | ) |  |     |  |              
|                             |  | ) |  | ss. |  | April 9, 2009
|COUNTY OF                    |  | ) |  |     |  |              

Personally appeared ROBERT SOPER signer and sealer of the foregoing instrument, and acknowledged
the same to be his free act and deed, before me.



/s/ Lisa M. SymeonNotary PublicMy Commission Expires: July 27, 2009




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