Sixth Supplemental Indenture, dated as of June 7, 2007



 EXHIBIT 4.1 
 SIXTH SUPPLEMENTAL INDENTURE 
 SIXTH SUPPLEMENTAL INDENTURE
(this “Supplemental Indenture”), dated as of June 7, 2007, among ACE Gaming, LLC, a New Jersey limited liability company, AREH MLK LLC, a Delaware limited liability company, MITRE Associates LLC, a Delaware limited liability
company, PNK Development 13, LLC, a New Jersey limited liability company and PSW Properties LLC, a Delaware limited liability company (each the “Guarantying Subsidiary” and collectively, the “Guarantying
Subsidiaries”), each either a direct or indirect subsidiary of Pinnacle Entertainment, Inc., a Delaware corporation (the “Company”), the Company, the other Guarantors (as defined in the Indenture referred to herein) and The
Bank of New York Trust Company, N.A., a national banking corporation and a successor to The Bank of New York, as trustee under the Indenture referred to below (the “Trustee”). 
 WITNESSETH 
 WHEREAS, the
Company has heretofore executed and delivered to the Trustee an indenture (the “Indenture”), dated as of March 15, 2004, and as amended as of December 3, 2004, and as further amended as of October 19, 2005, and as
further amended as of November 17, 2006, and as further amended as of January 30, 2007, and as further amended as of May 29, 2007, providing for the issuance of 8 1/4% Senior Subordinated Notes due 2012 (the “Notes”); 
 WHEREAS, the Indenture provides that under certain circumstances the Guarantying Subsidiaries shall execute and deliver to the Trustee a supplemental indenture pursuant to which the Guarantying Subsidiaries shall unconditionally guarantee
all of the Company’s Obligations under the Notes and the Indenture on the terms and conditions set forth herein (the “Guaranty”); and 
 WHEREAS, pursuant to Section 9.01 of the Indenture, the Trustee is authorized to execute and deliver this Supplemental Indenture. 
 NOW, THEREFORE, in consideration of the foregoing and for other good and valuable consideration, the receipt of which is hereby acknowledged, each Guarantying Subsidiary and the Trustee mutually covenant and agree for
the equal and ratable benefit of the Holders of the Notes as follows: 
 1. CAPITALIZED TERMS. Capitalized
terms used herein without definition shall have the meanings assigned to them in the Indenture. 
 2. AGREEMENT
TO GUARANTY. Each Guarantying Subsidiary hereby agrees to provide an unconditional Guaranty on the terms and subject to the conditions set forth in the Guaranty and in the Indenture including but not limited to Article
11 thereof. 
 4. NO RECOURSE AGAINST OTHERS. No past, present or future
director, officer, employee, incorporator, member, partner, stockholder or agent of the Guarantying 

  

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Subsidiaries, as such, shall have any liability for any obligations of the Company or any of the Guarantying Subsidiaries under the Notes, any Guaranties,
the Indenture or this Supplemental Indenture or for any claim based on, in respect of, or by reason of, such obligations or their creation. Each Holder of the Notes by accepting a Note waives and releases all such liability. The waiver and release
are part of the consideration for issuance of the Notes. Such waiver may not be effective to waive liabilities under the federal securities laws and it is the view of the SEC that such a waiver is against public policy. 
 5. NEW YORK LAW TO GOVERN. THE INTERNAL LAW OF THE STATE OF NEW YORK SHALL GOVERN AND BE USED TO CONSTRUE THIS SUPPLEMENTAL INDENTURE WITHOUT GIVING
EFFECT TO APPLICABLE PRINCIPLES OF CONFLICTS OF LAW TO THE EXTENT THAT THE APPLICATION OF THE LAWS OF ANOTHER JURISDICTION WOULD BE REQUIRED THEREBY. 
 6. COUNTERPARTS. The parties may sign any number of copies of this Supplemental Indenture. Each signed copy shall be an original, but all of them together represent the same agreement. 
 7. EFFECT OF HEADINGS. The Section headings herein are for convenience only and shall not affect the
construction hereof. 
 8. THE TRUSTEE. The Trustee shall not be responsible in any manner whatsoever for or in
respect of the validity or sufficiency of this Supplemental Indenture or for or in respect of the recitals contained herein, all of which recitals are made solely by the Guarantying Subsidiaries and the Company. 
 [Signature pages follow] 
  

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 IN WITNESS WHEREOF, the parties hereto have caused this Sixth Supplemental Indenture to be duly executed
as of the date first above written. 
  

					
	ACE GAMING, LLC,
	a New Jersey limited liability company
		
	By: 	 	PNK Development 13, LLC,
		 	a New Jersey limited liability company,
	Its: 	 	Sole Member
			
		 	By: 	 	Biloxi Casino Corp.,
		 		 	a Mississippi corporation
		 	Its: 	 	Sole Member
			
		 	By: 	 	/s/ Stephen H. Capp
		 	Name: 	 	Stephen H. Capp
		 	Title: 	 	Treasurer



					
	
	AREH MLK LLC,
	a Delaware limited liability company
		
	By: 	 	Biloxi Casino Corp.,
		 	a Mississippi corporation
	Its: 	 	Sole Member
			
		 	By: 	 	/s/ Stephen H. Capp
		 	Name: 	 	Stephen H. Capp
		 	Title: 	 	Treasurer



					
	
	MITRE ASSOCIATES LLC,
	a Delaware limited liability company
		
	By: 	 	PNK Development 13, LLC,
		 	a New Jersey limited liability company,
	Its: 	 	Sole Member
			
		 	By: 	 	Biloxi Casino Corp.,
		 		 	a Mississippi corporation
		 	Its: 	 	Sole Member
			
		 	By: 	 	/s/ Stephen H. Capp
		 	Name: 	 	Stephen H. Capp
		 	Title: 	 	Treasurer


  

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	PSW PROPERTIES LLC,
	a Delaware limited liability company
		
	By: 	 	Biloxi Casino Corp.,
		 	a Mississippi corporation
	Its: 	 	Sole Member
			
		 	By: 	 	/s/ Stephen H. Capp
		 	Name: 	 	Stephen H. Capp
		 	Title: 	 	Treasurer



					
	
	PNK DEVELOPMENT 13, LLC,
	a New Jersey limited liability company
		 	
		 	By: 	 	Biloxi Casino Corp.,
		 		 	a Mississippi corporation
		 	Its: 	 	Sole Member
			
		 	By: 	 	/s/ Stephen H. Capp
		 	Name: 	 	Stephen H. Capp
		 	Title: 	 	Treasurer
	
	PINNACLE ENTERTAINMENT, INC.,
	a Delaware corporation
	
	BILOXI CASINO CORP.,
	a Mississippi corporation
	
	CASINO MAGIC CORP.,
	a Minnesota corporation
	
	CASINO ONE CORPORATION,
	a Mississippi corporation
	
	PNK (BOSSIER CITY), INC.,
	a Louisiana corporation
	
	ST. LOUIS CASINO CORP.,
	a Missouri corporation
		
	By: 	 	/s/ Stephen H. Capp
	Name: 	 	Stephen H. Capp
	Title: 	 	Chief Financial Officer and/or
		 	Treasurer


  

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	BELTERRA RESORT INDIANA, LLC,
a Nevada limited liability company
		
	By: 	 	Pinnacle Entertainment, Inc,
	Its: 	 	Sole Member
			
		 	By: 	 	/s/ Stephen H. Capp
		 	Name: 	 	Stephen H. Capp
		 	Title: 	 	Chief Financial Officer


  

					
	BOOMTOWN, LLC,
a Delaware limited liability company
		
	By: 	 	Pinnacle Entertainment, Inc,
	Its: 	 	Sole Member
			
		 	By: 	 	/s/ Stephen H. Capp
		 	Name: 	 	Stephen H. Capp
		 	Title: 	 	Chief Financial Officer


  

					
	PNK (LAKE CHARLES), L.L.C.,
a Louisiana limited liability company
		
	By: 	 	Pinnacle Entertainment, Inc.,
	Its: 	 	Sole Member and Manager
			
		 	By: 	 	/s/ Stephen H. Capp
		 	Name: 	 	Stephen H. Capp
		 	Title: 	 	Chief Financial Officer


  

					
	PNK (RENO), LLC,
a Nevada limited liability company
		
	By: 	 	Pinnacle Entertainment, Inc,
	Its: 	 	Sole Member
			
		 	By: 	 	/s/ Stephen H. Capp
		 	Name: 	 	Stephen H. Capp
		 	Title: 	 	Chief Financial Officer


  

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	LOUISIANA-I GAMING,
a Louisiana Partnership in Commendam
		
	By: 	 	Boomtown, LLC,
	Its: 	 	Partner
			
		 	By: 	 	Pinnacle Entertainment, Inc.,
its Sole Member
		 		 		 	
		 		 	By: 	 	/s/ Stephen H. Capp
		 		 	Name: 	 	Stephen H. Capp
		 		 	Title: 	 	Chief Financial Officer


  

							
	By: 	 	Pinnacle Entertainment, Inc.,
	Its: 	 	Partner
			
		 	By: 	 	/s/ Stephen H. Capp
		 	Name: 	 	Stephen H. Capp
		 	Title: 	 	Chief Financial Officer


  

							
	PNK (ES), LLC,
a Delaware limited liability company
		
	By: 	 	Pinnacle Entertainment, Inc.
	Its: 	 	Sole Member
			
		 	By: 	 	/s/ Stephen H. Capp
		 	Name: 	 	Stephen H. Capp
		 	Title: 	 	Chief Financial Officer


  

							
	PNK (ST. LOUIS RE), LLC,
a Delaware limited liability company
		
	By: 	 	Pinnacle Entertainment, Inc.
	Its: 	 	Sole Member
			
		 	By: 	 	/s/ Stephen H. Capp
		 	Name: 	 	Stephen H. Capp
		 	Title: 	 	Chief Financial Officer


  

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	AREP BOARDWALK PROPERTIES LLC,
a Delaware limited liability company
		
	By: 	 	Biloxi Casino Corp.
	its: 	 	Sole Member
			
		 	By: 	 	/s/ Stephen H. Capp
		 	Name: 	 	Stephen H. Capp
		 	Title: 	 	Treasurer


  

					
	 PNK DEVELOPMENT 7, LLC,

 a Delaware
limited liability company

		
	By: 	 	Pinnacle Entertainment, Inc.
	Its: 	 	Sole Member
			
		 	By: 	 	/s/ Stephen H. Capp
		 	Name: 	 	Stephen H. Capp
		 	Title: 	 	Chief Financial Officer


  

					
	 PNK DEVELOPMENT 8, LLC,
 a Delaware limited
liability company

		
	By: 	 	Pinnacle Entertainment, Inc.
	Its: 	 	Sole Member
			
		 	By: 	 	/s/ Stephen H. Capp
		 	Name: 	 	Stephen H. Capp
		 	Title: 	 	Chief Financial Officer


  

					
	 PNK DEVELOPMENT 9, LLC,
 a Delaware limited
liability company

		
	By: 	 	Pinnacle Entertainment, Inc.
	Its: 	 	Sole Member
			
		 	By: 	 	/s/ Stephen H. Capp
		 	Name: 	 	Stephen H. Capp
		 	Title: 	 	Chief Financial Officer


  

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	 PNK (SCB), LLC,
 a Louisiana limited
liability company

		
	By: 	 	PNK Development 7, LLC,
	Its: 	 	Sole Member
			
		 	By: 	 	Pinnacle Entertainment, Inc.
		 	Its: 	 	Sole Member
		 		 		 	
		 		 	By: 	 	/s/ Stephen H. Capp
		 		 	Name: 	 	Stephen H. Capp
		 		 	Title: 	 	Chief Financial Officer


  

							
	 PNK (BATON ROUGE) PARTNERSHIP,
 a Louisiana
partnership

		
	By: 	 	PNK Development 8, LLC,
	Its: 	 	Partner
			
		 	By: 	 	Pinnacle Entertainment, Inc.,

		 	Its: 	 	Sole Member
		 		 		 	
		 		 	By: 	 	/s/ Stephen H. Capp
		 		 	Name: 	 	Stephen H. Capp
		 		 	Title: 	 	Chief Financial Officer


  

							
	By: 	 	PNK Development 9, LLC,
	Its: 	 	Partner
			
		 	By: 	 	Pinnacle Entertainment, Inc.,

		 	Its: 	 	Sole Member
		 		 		 	
		 		 	By: 	 	/s/ Stephen H. Capp
		 		 	Name: 	 	Stephen H. Capp
		 		 	Title: 	 	Chief Financial Officer


  

							
	PNK (CHILE 1), LLC,
a Delaware limited liability company
		 		 		 	
	By: 	 	Pinnacle Entertainment, Inc.,
a Delaware corporation,
	Its: 	 	Sole Member
			
		 	By: 	 	/s/ Stephen H. Capp
		 	Name: 	 	Stephen H. Capp
		 	Title: 	 	Chief Financial Officer


  

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	PNK (CHILE 2), LLC,
a Delaware limited liability company
		
	By: 	 	 Pinnacle Entertainment, Inc.,
 a Delaware
corporation,

	Its: 	 	Sole Member
			
		 	By: 	 	/s/ Stephen H. Capp
		 	Name: 	 	Stephen H. Capp
		 	Title: 	 	Chief Financial Officer


  

							
	PNK (ST. LOUIS 4S), LLC,
a Delaware limited liability company
		
	By: 	 	 Pinnacle Entertainment, Inc.,
 a Delaware
corporation

	Its: 	 	Sole Member
			
		 	By: 	 	/s/ Stephen H. Capp
		 	Name: 	 	Stephen H. Capp
		 	Title: 	 	Chief Financial Officer


  

							
	YANKTON INVESTMENTS, LLC,
a Nevada limited liability company
		
	By: 	 	/s/ John A. Godfrey
	Name: 	 	John A. Godfrey
	Its: 	 	Sole Manager


  

							
	OGLE HAUS, LLC,
an Indiana limited liability company
		
	By: 	 	Belterra Resorts Indiana, LLC,
a Nevada limited liability company
	Its: 	 	Sole Member
			
		 	By: 	 	Pinnacle Entertainment, Inc.,
a Delaware corporation,
		 	Its: 	 	Sole Member
		 		 		 	
		 		 	By: 	 	/s/ Stephen H. Capp
		 		 	Name: 	 	Stephen H. Capp
		 		 	Title: 	 	Chief Financial Officer


  

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	 THE BANK OF NEW YORK TRUST
COMPANY,
 N.A., as Trustee

		
	By: 	 	/s/ Teresa Petta
	Name: 	 	Teresa Petta
	Title: 	 	Vice President


  

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