EXHIBIT 3.17 CERTIFICATE OF FORMATION OF BUFFINGTON HARBOR RIVERBOATS, L.L.C. A LIMITED LIABILITY COMPANY FIRST: The name of the limited liability company is: BUFFINGTON HARBOR RIVERBOATS, L.L.C. SECOND: Its registered office in the State of Delaware is to be located at 32 Loockerman Square, Suite L-100, in the City of Dover, County of Kent, Delaware 19904, and its registered agent at such address is THE PRENTICE-HALL CORPORATION SYSTEM, INC. IN WITNESS WHEREOF, the undersigned, being the individual forming the Company, has executed, signed and acknowledged this Certificate of Formation this twenty-fifth day of September, A.D. 1995. /s/ PAMELA SIMPSON - ---------------------- Authorized Person