Document:

EX-4.1

 Exhibit 4.1 

SUPPLEMENTAL INDENTURE 

Supplemental Indenture (this “Supplemental Indenture”), dated as of May 1, 2017 among Eagle II Acquisition Company
LLC, a Delaware limited liability company (the “Escrow Issuer”), Eldorado Resorts, Inc., a Nevada corporation (the “New Issuer”), each of the parties that are signatories hereto as Guarantors (collectively, together
with Escrow Issuer, the “New Guarantors”) and U.S. Bank National Association, as trustee (the “Trustee”). 

W I T N E S S E T H 
 WHEREAS,
the Escrow Issuer has heretofore executed and delivered to the Trustee an Indenture (the “Indenture”), dated as of March 29, 2017, providing for the issuance of $375,000,000 principal amount of 6% Senior Notes due 2025 (the
“Notes”); 
 WHEREAS, the ERI-Isle Merger will occur substantially concurrently with the execution of this Supplemental
Indenture; 
 WHEREAS, the Indenture provides that (a) upon the Escrow Release, the New Issuer shall assume all obligations of the
Escrow Issuer under the Notes and the Indenture and (b) the Guarantors shall, by executing this Supplemental Indenture, become, or substantially concurrently with the Escrow Release shall become, parties to the Indenture ; and 

WHEREAS, pursuant to Section 9.01 of the Indenture, the Trustee is authorized to execute and deliver this Supplemental Indenture without
the consent of the Holders. 
 NOW THEREFORE, in consideration of the foregoing and for other good and valuable consideration, the receipt
of which is hereby acknowledged, the parties mutually covenant and agree for the equal and ratable benefit of the Holders as follows: 
 (1)
Capitalized Terms. Capitalized terms used herein without definition shall have the meanings assigned to them in the Indenture. 
 (2)
Agreement to be Bound. (a) The New Issuer acknowledges that it has received and reviewed a copy of the Indenture and all other documents it deems necessary to review in order to enter into this Supplemental Indenture, and acknowledges
and agrees to (i) unconditionally assume the Escrow Issuer’s obligations under the Notes and the Indenture on the terms and subject to the conditions set forth in the Indenture; (ii) be bound by all applicable provisions of the
Indenture as if made by, and with respect to the New Issuer; and (iii) perform all obligations and duties required of the Issuer pursuant to the Indenture. 

(b) Each New Guarantor acknowledges that it has received and reviewed a copy of the Indenture and all other documents it deems necessary to
review in order to enter into this Supplemental Indenture, and acknowledges and agrees to (i) join and become a party to the Indenture as indicated by its signature below; (ii) be bound by all applicable provisions of the Indenture as if
made by, and with respect to, such New Guarantor; and (iii) perform all obligations and duties required of a Guarantor pursuant to the Indenture. Each New Guarantor hereby agrees to provide an unconditional Guarantee on the terms and subject to
the conditions set forth in the Indenture, including, but not limited to, Article 10 thereof. 

  
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 (3) Notices. All notices or other communications to the New Issuer or any New Guarantor
shall be given as provided in Section 13.02 of the Indenture. 
 (4) Execution and Delivery. The New Issuer agrees that the
Notes shall remain in full force and effect notwithstanding the absence of any endorsement of the New Issuer or the Notes, and each New Guarantor agrees that its Guarantee shall remain in full force and effect notwithstanding the absence of the
endorsement of any notation of such Guarantee on the Notes. 
 (5) Release of Obligations. Upon execution of this Supplemental
Indenture by the New Issuer, the New Guarantors and the Trustee, the Escrow Issuer shall be unconditionally and irrevocably released and discharged from all obligations and liabilities under the Indenture and the Notes (other than those obligations
and liabilities applicable to Escrow Issuer as a Guarantor as described in Section 2(b) above). 
 (6) Ratification of Indenture;
Supplemental Indentures Part of Indenture. Except as expressly amended hereby, the Indenture is in all respects ratified and confirmed and all the terms, conditions and provisions thereof shall remain in full force and effect. This Supplemental
Indenture shall form a part of the Indenture for all purposes, and every holder of Notes heretofore or hereafter authenticated and delivered shall be bound hereby. 

(7) No Recourse Against Others. No past, present or future director, officer, employee, incorporator, or direct or indirect member,
partner or stockholder of the New Issuer or any New Guarantor shall have any liability for any obligations of the New Issuer or the New Guarantors (other than in their capacity as Issuer or Guarantor) under the Notes, any Guarantees, 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 by accepting Notes waives and releases all such liability. The waiver and release are part of the consideration
for issuance of the Notes. 
 (8) Governing Law. THIS SUPPLEMENTAL INDENTURE, AND ANY CLAIM, CONTROVERSY OR DISPUTE ARISING UNDER OR
RELATED TO THIS SUPPLEMENTAL INDENTURE, WILL BE GOVERNED BY AND CONSTRUED IN ACCORDANCE WITH THE LAWS OF THE STATE OF NEW YORK. 
 (9)
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. This Supplemental Indenture may be executed in multiple
counterparts which, when taken together, shall constitute one instrument. The exchange of copies of this Supplemental Indenture and of signature pages by facsimile or PDF transmissions shall constitute effective execution and delivery of this
Supplemental Indenture as to the parties hereto and may be used in lieu of the original Supplemental Indenture for all purposes. Signatures of the parties hereto transmitted by facsimile or PDF shall be deemed to be their original signatures for all
purposes. 
 (10) Effect of Headings. The Section headings herein are for convenience only and shall not affect the construction
hereof. 

  
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 (11) 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 New Issuer and New Guarantors. 

(12) Benefits Acknowledged. The Guarantee of each New Guarantor is subject to the terms and conditions set forth in the Indenture. Each
New Guarantor acknowledges that it will receive direct and indirect benefits from the financing arrangements contemplated by the Indenture and this Supplemental Indenture and that the guarantee and waivers made by it pursuant to such Guarantee are
knowingly made in contemplation of such benefits. 
 (13) Successors. All agreements of the New Issuer and each New Guarantor in this
Supplemental Indenture shall bind its Successors, except as otherwise provided in this Supplemental Indenture. All agreements of the Trustee in this Supplemental Indenture shall bind its successors. 

[Signatures on following page] 

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

					
	ELDORADO RESORTS, INC.
		
	By:	 	/s/ Gary L. Carano
		 	Name:	 	Gary L. Carano
		 	Title:	 	Chief Executive Officer
	
	EAGLE II ACQUISITION COMPANY LLC
		
	By:	 	/s/ Gary L. Carano
		 	Name:	 	Gary L. Carano
		 	Title:	 	Authorized Officer

  
 [Signature Page to
Supplemental Indenture] 

 
					
	 EAGLE II ACQUISITION COMPANY LLC

ELDORADO HOLDCO LLC
 ELDORADO RESORTS LLC

ELDORADO SHREVEPORT #1, LLC
 ELDORADO SHREVEPORT #2, LLC

ELDORADO CASINO SHREVEPORT JOINT VENTURE
 MTR GAMING GROUP,
INC.
 MOUNTAINEER PARK, INC.
 PRESQUE ISLE DOWNS, INC.

SCIOTO DOWNS, INC.
 ELDORADO LIMITED LIABILITY COMPANY

CIRCUS AND ELDORADO JOINT VENTURE, LLC
 CC – RENO
LLC
 CCR NEWCO, LLC
 BLACK HAWK HOLDINGS, L.L.C.

IC HOLDINGS COLORADO, INC.
 CCSC/BLACKHAWK, INC.

ISLE OF CAPRI BLACK HAWK, L.L.C.
 IOC – BLACK HAWK
DISTRIBUTION COMPANY, LLC
 IOC BLACK HAWK COUNTY, INC.
 ISLE OF
CAPRI BETTENDORF, L.C.
 PPI, INC.
 POMPANO PARK HOLDINGS,
L.L.C.
 IOC – LULA, INC.
 IOC – KANSAS
CITY, INC.
 IOC – BOONVILLE, INC.
 IOC –
CARUTHERSVILLE, LLC
 IOC – CAPE GIRARDEAU LLC

IOC – VICKSBURG, INC.
 IOC – VICKSBURG,
L.L.C.
 RAINBOW CASINO-VICKSBURG PARTNERSHIP, L.P.
 IOC
HOLDINGS, L.L.C.
 ST. CHARLES GAMING COMPANY, L.L.C.
  

as Guarantors

		
	By:	 	/s/ Gary L. Carano
		 	Name:	 	Gary L. Carano
		 	Title:	 	Authorized Officer

  
 [Signature Page to
Supplemental Indenture] 

 
					
	U.S. BANK NATIONAL ASSOCIATION, AS TRUSTEE
		
	By:	 	/s/ Michael M. Hopkins
		 	Name:	 	Michael M. Hopkins
		 	Title:	 	Vice President

  
 [Signature Page to
Supplemental Indenture]EX-4.2

 Exhibit 4.2 

FOURTH SUPPLEMENTAL INDENTURE 

FOURTH SUPPLEMENTAL INDENTURE (this “Supplemental Indenture”), dated as of
May 1, 2017, among ISLE OF CAPRI CASINOS LLC, a Delaware limited liability company, BLACK HAWK HOLDINGS, L.L.C., a Colorado limited liability company, CCSC/BLACKHAWK, INC., a Colorado corporation, IC HOLDINGS COLORADO, INC., a Colorado
corporation, IOC – BLACK HAWK DISTRIBUTION COMPANY, LLC, a Colorado limited liability company, ISLE OF CAPRI BLACK HAWK, L.L.C., a Colorado limited liability company, IOC – BOONVILLE, INC., a Nevada corporation, IOC –
CARUTHERSVILLE, LLC, a Missouri limited liability company, IOC – KANSAS CITY, INC., a Missouri corporation, IOC – CAPE GIRARDEAU LLC (f/k/a Midwest Region Development, LLC), a Missouri limited liability company, IOC –
LULA, INC. a Mississippi corporation, RAINBOW CASINO – VICKSBURG PARTNERSHIP, L.P., a Mississippi limited partnership, IOC BLACK HAWK COUNTY, INC., an Iowa corporation, ISLE OF CAPRI BETTENDORF, L.C., an Iowa limited-liability company, IOC
HOLDINGS, L.L.C., a Louisiana limited liability company, ST. CHARLES GAMING COMPANY, L.L.C., a Louisiana limited liability company, IOC – VICKSBURG, INC., a Delaware corporation, IOC – VICKSBURG, L.L.C., a Delaware limited
liability company, PPI, INC., a Florida corporation, and POMPANO PARK HOLDINGS, LLC, a Florida limited liability company (collectively, the “Guaranteeing Subsidiaries”), each a subsidiary of Eldorado Resorts, Inc. (or its permitted
successor), a Nevada corporation (the “Company”), the Company and U.S. Bank National Association, as trustee under the Indenture referred to below (the “Trustee”). 

W I T N E S S E T H 
 WHEREAS,
the Company has heretofore executed and delivered to the Trustee an indenture (as amended by that certain First Supplemental Indenture dated as of December 16, 2015, that certain Second Supplemental Indenture dated as of May 26, 2016 and
that certain Third Supplemental Indenture, dated as of March 16, 2017, and as may be further amended, supplemented, or otherwise modified, the “Indenture”), dated as of July 23, 2015 providing for the issuance of 7% Senior
Notes due 2023 (the “Notes”); 
 WHEREAS, the Indenture provides that under certain circumstances the Guaranteeing
Subsidiaries shall execute and deliver to the Trustee a supplemental indenture pursuant to which the Guaranteeing 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 “Note Guarantee”); 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, the Guaranteeing Subsidiaries and the Trustee mutually covenant and agree for the benefit of each other and 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 GUARANTEE. Each Guaranteeing Subsidiary
hereby agrees to provide an unconditional Guarantee on the terms and subject to the conditions set forth in the Note Guarantee and in the Indenture including but not limited to Article 10 thereof. 

 3. NO RECOURSE AGAINST OTHERS. No
director, officer, employee, incorporator or stockholder of the Company or any Guarantor, as such, will have any liability for any obligations of the Company or the Guarantors under the Notes, this Indenture, the Note Guarantees, or for any claim
based on, in respect of, or by reason of, such obligations or their creation. Each Holder of 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. The waiver
may not be effective to waive liabilities under the federal securities laws. 
 4. 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. 

5. 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. 
 The exchange of copies of this Supplemental Indenture and of signature
pages by facsimile or PDF transmission shall constitute effective execution and delivery of this Supplemental Indenture as to the parties hereto and may be used in lieu of the original Supplemental Indenture for all purposes. Signatures of the
parties hereto transmitted by facsimile or PDF shall be deemed to be their original signatures for all purposes. 
 6. EFFECT
OF HEADINGS. The Section headings herein are for convenience only and shall not affect the construction hereof. 

7. 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 Guaranteeing Subsidiaries and the Company. 

  
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 IN WITNESS WHEREOF, the parties hereto have caused this Supplemental Indenture to be duly
executed and attested, all as of the date first above written. 
 Dated: May 1, 2017, 

 
  

					
	 ISLE OF CAPRI CASINOS LLC
 BLACK
HAWK HOLDINGS, L.L.C.
 IC HOLDINGS COLORADO, INC.

CCSC/BLACKHAWK, INC.
 ISLE OF CAPRI BLACK HAWK, L.L.C.

IOC – BLACK HAWK DISTRIBUTION COMPANY, LLC
 IOC BLACK
HAWK COUNTY, INC.
 ISLE OF CAPRI BETTENDORF, L.C.
 PPI,
INC.
 POMPANO PARK HOLDINGS, L.L.C.
 IOC – LULA,
INC.
 IOC – KANSAS CITY, INC.
 IOC –
BOONVILLE, INC.
 IOC – CARUTHERSVILLE, LLC

IOC – CAPE GIRARDEAU LLC
 IOC – VICKSBURG,
INC.
 IOC – VICKSBURG, L.L.C.
 RAINBOW
CASINO – VICKSBURG PARTNERSHIP, L.P.
 IOC HOLDINGS, L.L.C.

ST. CHARLES GAMING COMPANY, L.L.C.

		
	By:	 	/s/ Gary L. Carano
		 	Name:	 	Gary L. Carano
		 	Title:	 	Authorized Officer
	
	ELDORADO RESORTS, INC.
		
	By:	 	/s/ Gary L. Carano
		 	Name:	 	Gary L. Carano
		 	Title:	 	Chief Executive Officer

  
 [Signature Page to
Supplemental Indenture] 

 
					
	 U.S. BANK NATIONAL ASSOCIATION
 as
Trustee

		
	By:	 	/s/ Michael M. Hopkins
		 	Name:	 	Michael M. Hopkins
		 	Title:	 	Vice President

  
 [Signature Page to
Supplemental Indenture]

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