Exhibit 10.5

Joinder Agreement

August 13, 2013

J.P. Morgan Securities LLC

Goldman, Sachs & Co.

Deutsche Bank Securities Inc.

Merrill Lynch, Pierce, Fenner & Smith

                    Incorporated

Wells Fargo Securities, LLC

Credit Agricole Securities (USA) Inc.

Barclays Capital Inc. UBS Securities LLC

As Representatives of the several

    Initial Purchasers named in Schedule 1 of the Purchase Agreement

c/o J.P. Morgan Securities LLC

383 Madison Avenue

New York, New York 10179

Reference is hereby made to that purchase agreement (the “Purchase Agreement”)
dated as of July 30, 2013 among PNK Finance Corp., a Delaware corporation (the
“Issuer”) and wholly-owned unrestricted subsidiary of Pinnacle Entertainment,
Inc., a Delaware corporation (the “Company”), and the Initial Purchasers
relating to the issuance and sale to the Initial Purchasers of $850,000,000
aggregate principal amount of the Issuer’s 6.375% Senior Notes due 2021 (the
“Notes”). Capitalized terms used herein and not otherwise defined herein shall
have the meanings ascribed to such terms in the Purchase Agreement.

1. Representations, Warranties and Agreements. Each of the undersigned hereby
represents and warrants to and agrees that it has the requisite right, power and
authority to execute, deliver and perform its obligations under this Joinder
Agreement and to consummate the transactions contemplated hereby. This Joinder
Agreement has been duly authorized, executed and delivered by each of the
undersigned.

2. Joinder. Without limiting the generality of the foregoing, each of the
undersigned agrees that it will be bound by all covenants, agreements,
representations, warranties and acknowledgments attributable to the Company or
the Guarantors, as applicable, under the Purchase Agreement, as if each of the
undersigned was a party thereto as of the date of the Purchase Agreement.

3. Counterparts. This Joinder Agreement may be signed in one or more
counterparts (which may be delivered in original form or facsimile or “pdf” file
thereof), each of which shall constitute an original when so executed and all of
which together shall constitute one and the same agreement.

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4. Amendments. No amendment or waiver of any provision of this Joinder
Agreement, nor any consent or approval to any departure therefrom, shall in any
event be effective unless the same shall be in writing and signed by the parties
thereto.

5. Headings. The section headings used herein are for convenience only and shall
not affect the construction hereof.

6. APPLICABLE LAW. THE VALIDITY AND INTERPRETATION OF THIS JOINDER AGREEMENT,
THE TERMS AND CONDITIONS SET FORTH HEREIN AND ANY CLAIM, CONTROVERSY OR DISPUTE
ARISING UNDER OR RELATED TO THIS JOINDER AGREEMENT SHALL BE GOVERNED BY AND
CONSTRUED IN ACCORDANCE WITH THE LAWS OF THE STATE OF NEW YORK.

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IN WITNESS WHEREOF, each of the undersigned has caused this Joinder Agreement to
be duly executed and delivered in New York, New York, by its proper and duly
authorized officer as of the date set forth above.

 

PINNACLE ENTERTAINMENT, INC.   By:  

/s/ Carlos A. Ruisanchez

  Name:   Carlos A. Ruisanchez   Title:   President and Chief Financial Officer

PNK (SAZ), LLC, a Texas limited liability company;

PNK (SAM), LLC, a Texas limited liability company;

BELTERRA RESORT INDIANA, LLC, a Nevada limited liability company;

BOOMTOWN, LLC, a Delaware limited liability company;

PNK (ES), LLC, a Delaware limited liability company;

PNK (RENO), LLC, a Nevada limited liability company;

PNK (LAKE CHARLES), L.L.C., a Louisiana limited liability company;

PNK (STLH), LLC, a Delaware limited liability company;

PNK (ST. LOUIS RE), LLC, a Delaware limited liability company;

PNK DEVELOPMENT 7, LLC, a Delaware limited liability company;

PNK DEVELOPMENT 8, LLC, a Delaware limited liability company;

PNK DEVELOPMENT 9, LLC, a Delaware limited liability company;

PNK (OHIO), LLC, an Ohio limited liability company;

PNK (RIVER CITY), LLC, a Missouri limited liability company; and

CASINO MAGIC, LLC, a Minnesota limited liability company

  By:   Pinnacle Entertainment, Inc.   Its:   Sole Member     By:  

/s/ Carlos A. Ruisanchez

    Name:   Carlos A. Ruisanchez     Title:   President and Chief Financial
Officer

[Signature Page to Purchase Agreement Joinder Agreement]

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PNK (OHIO) II, LLC, an Ohio limited liability company; and PNK (OHIO) III, LLC,
an Ohio limited liability company   By:  

PNK (Ohio), LLC

  Its:   Sole Member     By:  

Pinnacle Entertainment, Inc.

    Its:   Sole Member         By:  

/s/ Carlos A. Ruisanchez

        Name:   Carlos A. Ruisanchez         Title:   President and Chief
Financial Officer

 

PRESIDENT RIVERBOAT CASINO-MISSOURI, INC., a

Missouri corporation

  By:  

/s/ Carlos A. Ruisanchez

  Name:   Carlos A. Ruisanchez   Title:   Treasurer PNK (BOSSIER CITY), INC., a
Louisiana corporation   By:  

/s/ Carlos A. Ruisanchez

  Name:   Carlos A. Ruisanchez   Title:   Treasurer CASINO ONE CORPORATION, a
Mississippi corporation   By:  

/s/ Carlos A. Ruisanchez

  Name:   Carlos A. Ruisanchez   Title:   Treasurer

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PNK (BILOXI), LLC, a Delaware limited liability company   By:   Casino Magic,
LLC            Its:   Sole Member     By:   Pinnacle Entertainment, Inc.    
Its:   Sole Member         By:  

/s/ Carlos A. Ruisanchez

        Name:   Carlos A. Ruisanchez         Title:   President and Chief
Financial Officer LOUISIANA – I GAMING, a Louisiana Partnership in Commendam  
By:   Boomtown, LLC   Its:   General Partner              By:   Pinnacle
Entertainment, Inc.     Its:   Sole Member         By:  

/s/ Carlos A. Ruisanchez

        Name:   Carlos A. Ruisanchez         Title:   President and Chief
Financial Officer OGLE HAUS, LLC, an Indiana limited liability company   By:  

Belterra Resort Indiana, LLC

           Its:   Sole Member     By:   Pinnacle Entertainment, Inc.     Its:  
Sole Member         By:  

/s/ Carlos A. Ruisanchez

        Name:   Carlos A. Ruisanchez         Title:   President and Chief
Financial Officer YANKTON INVESTMENTS, LLC, a Nevada limited liability company
                 By:  

/s/ Carlos A. Ruisanchez

        Name:   Carlos. A. Ruisanchez         Title:   Sole Manager

[Signature Page to Purchase Agreement Joinder Agreement]

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PNK (SCB), L.L.C., a Louisiana limited liability company   By:   PNK Development
7, LLC   Its:   Sole Member     By:   Pinnacle Entertainment, Inc.     Its:  
Sole Member         By:  

/s/ Carlos A. Ruisanchez

        Name:   Carlos A. Ruisanchez         Title:   President and Chief
Financial Officer

 

PNK (BATON ROUGE) PARTNERSHIP, a Louisiana partnership     By:   PNK Development
8, LLC     Its:   Managing Partner       By:   Pinnacle Entertainment, Inc.    
  Its:   Sole Member           By:  

/s/ Carlos A. Ruisanchez

          Name:   Carlos A. Ruisanchez           Title:   President and Chief
Financial Officer

 

ACE GAMING, LLC, a New Jersey limited liability company; and MITRE ASSOCIATES,
LLC, a Delaware limited liability company   By:   PNK Development 13, LLC   Its:
  Sole Member     By:   PNK (BILOXI), LLC     Its:   Sole Member       By:  
Casino Magic, LLC       Its:   Sole Member         By:   Pinnacle Entertainment,
Inc.         Its:   Sole Member           By:  

/s/ Carlos A. Ruisanchez

          Name:   Carlos A. Ruisanchez           Title:   President and Chief
Financial Officer

[Signature Page to Purchase Agreement Joinder Agreement]

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AREH MLK LLC, a Delaware limited liability company;

PSW PROPERTIES, LLC, a Delaware limited liability company;

AREP BOARDWALK PROPERTIES, LLC, a Delaware limited liability company; and

PNK DEVELOPMENT 13, LLC, a New Jersey limited liability company

  By:   PNK (Biloxi), LLC   Its:   Sole Member     By:   Casino Magic, LLC    
Its:   Sole Member       By:   Pinnacle Entertainment, Inc.       Its:   Sole
Member         By:  

/s/ Carlos A. Ruisanchez

        Name   : Carlos A. Ruisanchez         Title:   President and Chief
Financial Officer

[Signature Page to Purchase Agreement Joinder Agreement]

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AMERISTAR CASINO BLACK HAWK, INC., a Colorado corporation;

AMERISTAR CASINO COUNCIL BLUFFS, INC., an Iowa corporation;

AMERISTAR CASINO ST. CHARLES, INC., a Missouri corporation;

AMERISTAR CASINO ST. LOUIS, INC., a Missouri corporation;

AMERISTAR CASINO KANSAS CITY, INC., a Missouri corporation;

AMERISTAR CASINO VICKSBURG, INC., a Mississippi corporation;

CACTUS PETE’S, INC., a Nevada corporation;

AMERISTAR CASINO LAS VEGAS, INC., a Nevada corporation; and

AMERISTAR CASINOS FINANCING CORP., a Nevada corporation

  By:  

/s/ Carlos A. Ruisanchez

  Name:   Carlos A. Ruisanchez   Title:   President

AMERISTAR EAST CHICAGO HOLDINGS, LLC, an Indiana limited liability company;

AMERISTAR CASINO SPRINGFIELD, LLC, a Massachusetts limited liability company;

AMERISTAR LAKE CHARLES HOLDINGS, LLC, a Louisiana limited liability company; and

AMERISTAR CASINO EAST CHICAGO, LLC, an Indiana limited liability company

    By:  

/s/ Carlos A. Ruisanchez

    Name:   Carlos A. Ruisanchez     Title:   Sole manager

AMERISTAR CASINO LAKE CHARLES, LLC, a Louisiana limited liability company

           By:   Ameristar Lake Charles Holdings, LLC, its sole member     By:  

/s/ Carlos A. Ruisanchez

    Name:   Carlos A. Ruisanchez     Title:   Sole manager