Pinnacle Entertainment Launches River City Casino Website - www.therivercitycasino.com

Pinnacle Entertainment Launches River City Casino Website -
www.therivercitycasino.com

ST. LOUIS, June 16 /PRNewswire-FirstCall/ -- Pinnacle Entertainment, Inc.
(NYSE: PNK) announced today that it has launched the property website for
River City Casino, the St. Louis region's newest entertainment destination
expected to open in the first quarter of 2010, contingent on final approval
from the Missouri Gaming Commission.

The property website, located at www.therivercitycasino.com, currently
features River City-related news, community relations information, a special
section for potential vendors to register for future business opportunities,
and a link to the live project webcam. Website visitors are also encouraged to
sign up for the River City Casino email list to receive project updates and
special offers as they become available. In addition, detailed fact sheets are
available for download in the media center and artist renderings are available
by request.

As the project progresses in the coming months, the site will be updated to
include information about the opening of River City's employment center, job
opportunities and online job application form.

Check back often, as additional information will be posted as it becomes
available.

About River City Casino
River City Casino is St. Louis' newest gateway to an exciting entertainment
experience. Located approximately ten miles south of downtown St. Louis in the
community of Lemay, the $380 million multi-use complex captures the overall
look of a Missouri riverboat town at the peak of the steamboat trade on the
famed Mississippi River. The first phase of the project will include a
90,000-square-foot casino, with more than 2,000 slot machines and more than 50
table games, several restaurants, an entertainment venue and other amenities.
River City Casino is scheduled to open in the first quarter of 2010, pending
final approval from the Missouri Gaming Commission. View the live project
webcam at www.therivercitycasino.com.

River City Casino is the sister property of Lumiere Place, a $507 million
casino hotel complex, which opened in downtown St. Louis in December 2007.

About Pinnacle Entertainment
Pinnacle Entertainment, Inc. owns and operates casinos in Nevada, Louisiana,
Indiana, Missouri and Argentina. The Company has a casino development project
under construction in the St. Louis area, to be called River City, which
opening is dependent upon final approval by the Missouri Gaming Commission.
Pinnacle is also developing a casino resort in Lake Charles, Louisiana, to be
called Sugarcane Bay, and a casino resort in Baton Rouge, Louisiana.
Additionally, Pinnacle owns a casino site at the heart of the Boardwalk in
Atlantic City, New Jersey.

All statements included in this press release, other than historical
information or statements of historical fact, are "forward-looking statements"
within the meaning of Section 27A of the Securities Act of 1933 and Section
21E of the Securities Exchange Act of 1934. These forward-looking statements,
including statements regarding the Company's future growth, anticipated
milestones, completion and opening schedules of various projects, construction
schedules and budgets and new development opportunities, are based on
management's current expectations and are subject to risks, uncertainties and
changes in circumstances that could significantly affect future results.
Accordingly, Pinnacle cautions that the forward-looking statements contained
herein are qualified by important factors that could cause actual results to
differ materially from those reflected by such statements. Such factors
include, but are not limited to: (a) many construction-related factors,
including the escalation of construction costs beyond increments anticipated
in its construction budgets, could prevent the Company from completing its
construction and development projects within budget and on time; and (b) the
Company may not meet the conditions for receipt of gaming licensing approvals,
including for its River City project, some of which are beyond its control;
and (c) other risks, including those as may be detailed from time to time in
the Company's filings with the Securities and Exchange Commission ("SEC"). For
more information on the potential factors that could affect the Company's
financial results and business, review the Company's filings with the SEC,
including, but not limited to, its Annual Report on Form 10-K, its Quarterly
Reports on Form 10-Q and its Current Reports on Form 8-K.

SOURCE Pinnacle Entertainment, Inc.

Carmen E. Gonzales of Pinnacle Entertainment, +1-609-441-4467, cell,
+1-609-441-8994, cgonzales@pnkacmail.com; or Mack Bradley of Apogee Public
Affairs, +1-314-732-1330, mbradley@apogeepa.com