Culture of San Francisco year-round and available for private functions. Classical and Opera venues in San Francisco include the San Francisco Symphony, the San Francisco Opera and the San Francisco Ballet. They all perform at the San Francisco War Memorial and Performing Arts Center. San Francisco's Ballet and Opera are some of the oldest continuing performing arts companies in the United States. San Francisco is the birthplace and home city of the vocal ensemble Chanticleer. The city is also home to the American Conservatory Theater, also known as A.C.T., which has been routinely staging original productions since its arrival in San Francisco in 1967.
Sega Studios San Francisco was to be used for a massively multiplayer online role-playing game called "Proteus", a successor to "Star Wars Galaxies". Development of Pangaea was halted in 2004 after Lucasarts reorganized under Jim Ward. Some of the ideas later informed the design of the studio's internal Riders engine used on "" and "Iron Man". Sidecar was a standalone UI authoring tool and SDK. Sidecar was used on several projects both internally and externally, among them, "", by Z-Axis. Sega Studios San Francisco Sega Studios San Francisco, formerly known as Secret Level Inc, was an American video game developer based in San Francisco,