From Sega Retro
Joypolis is an amusement park that was first opened on July 20, 1994 in Yokohama, Japan. Joypolis centres have since opened in several cities in Japan with the parks featuring arcade games and amusement rides based on Sega intellectual properties. As of 2008, only the parks in Odaiba, Tokyo; Umeda, Osaka; and Okayama City, Okayama are currently open.
The 11,946 sq metre complex opened with over 8,250 sq/m of that dedicated to the theme park's 7 major attractions. These included a revamped Virtua Racing (renamed Virtua Formula) and 217 coin operated arcade machines. Many of the rides also appeared inside Sega World Sydney when the parks launched in Australia. 
As part of a restructuring by Sega, Joyopolis Yokohama was closed in 1998.
SegaWorld refers to installations in the United Kingdom, China and Australia, seeking to promote Sega games while providing entertainment based on its licenses. The first of these was SegaWorld London, opened on September 7, 1996, but only lasted 3 years before closing in 1999.
The first GameWorks opened in Seattle, Washington in March, 1997. The chain began as a joint venture between Sega, Universal Studios, and DreamWorks SKG. DreamWorks SKG withdrew their involvement in 2001, and the chain itself filed for bankruptcy in 2004. The chain was bought out by Sega-Sammy Holdings on November 3, 2005, and is now operated by its subsidiary SEGA Entertainment USA, Inc.
SEGA announced in January 2008  that there were to be releasing a series of new Theme Park Arcades in Emaar shopping malls across the Middle East.