ZeniMax is best known as the owner of Bethesda Softworks, the developer of The Elder Scrolls game series, focused mainly on computer role playing games. It also owns other game development studios and publishes games developed by third party developers.
Under ZeniMax, Bethesda developed and published The Elder Scrolls III: Morrowind and The Elder Scrolls IV: Oblivion. Bethesda is also the publisher for three new Star Trek games, Star Trek - Legacy (For PC/Xbox 360), Star Trek - Tactical Assault (for Nintendo DS/PlayStation Portable), and Star Trek - Encounters (PS2).
In 2004, ZeniMax acquired the Fallout franchise from Interplay Entertainment. Bethesda's Todd Howard said in January 2007 that "We started work [on Fallout 3] in late 2004 with a few people. We only had about 10 people on it until Oblivion wrapped, but most of our staff is on it now.