Ameristar Casinos Completes Senior Notes Offerings

LAS VEGAS, NV, May 27 (MARKET WIRE) --
Ameristar Casinos, Inc. (NASDAQ: ASCA) today announced that it has
completed its previously announced private offerings of $650 million
aggregate principal amount of 9-1/4% senior unsecured notes due 2014.
$500 million aggregate principal amount of the notes were sold at a price
of 97.097% of the principal amount and $150 million aggregate principal
amount of the notes were sold at a price of 100% of the principal amount.
The net proceeds from the offerings of approximately $620 million were
used to prepay and permanently retire a portion of the outstanding
revolving loans and revolving loan commitments under the Company's senior
secured credit facility.

The notes have not initially been registered under the Securities Act of
1933 or any state securities law and may not be offered or sold in the
United States absent registration or an applicable exemption from
registration under the Securities Act and applicable state securities
laws. This press release does not constitute an offer to sell any
security and shall not constitute an offer, solicitation or sale in any
jurisdiction in which such offer or sale would be unlawful.

About Ameristar
Ameristar Casinos, Inc. is a leading Las Vegas-based
gaming and entertainment company known for its premier properties
characterized by innovative architecture, state-of-the-art casino floors
and superior dining, lodging and entertainment offerings. Ameristar's
focus on the total entertainment experience and the highest quality guest
service has earned it leading positions in the markets in which it
operates. Founded in 1954 in Jackpot, Nev., Ameristar has been a public
company since November 1993. The Company has a portfolio of eight casinos
in seven markets: Ameristar Casino Resort Spa St. Charles (greater St.
Louis); Ameristar Casino Hotel East Chicago (Chicagoland area); Ameristar
Casino Hotel Kansas City; Ameristar Casino Hotel Council Bluffs (Omaha,
Neb. and southwestern Iowa); Ameristar Casino Hotel Vicksburg (Jackson,
Miss. and Monroe, La.); Ameristar Casino Black Hawk (Denver metropolitan
area); and Cactus Petes and The Horseshu in Jackpot, Nev. (Idaho and the
Pacific Northwest).

Visit Ameristar Casinos' web site at www.ameristar.com (which shall not be
deemed to be incorporated in or a part of this press release).

CONTACTS:

Investors:
Tom Steinbauer
Senior Vice President, Chief Financial Officer
Ameristar Casinos, Inc.
(702) 567-7000

Media:
Rebecca Theim
Director of Communications
Ameristar Casinos, Inc.
(702) 567-7000

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