Gex is a side-scrolling platform game developed by Crystal Dynamics and originally released for the 3DO in 1995. Versions of the game were later released for the PlayStation, the Sega Saturn and Microsoft Windows. It was a pack-in game for Panasonic models of the 3DO later in the console's life.[1][2]It is the first game in the Gex series and introduces players to the title character, a wisecracking gecko, voiced in this game by comedian Dana Gould. Gex served as Crystal Dynamics's mascot, and was intended as a competitor to rival the likes of popular video game mascots such as Mario and Sonic the Hedgehog.

Gex 3: Deep Cover Gecko (titled Gex: Deep Pocket Gecko on Game Boy Color) is a platform video game. It is the third and final installment of the Gex video game series. Danny John-Jules provided the voice for Gex in the UK and European release and comedian Dana Gould reprised the role for the American release, also starring the Playboy model Marliece Andrada as Agent Xtra, the only character that is featured in live-action. Unlike the first two Gex games, passwords are not used for saving (except in the Game Boy Color version). A controller pak on the Nintendo 64 or a memory card on the PlayStation were the only options for saving. The N64 version features small amounts of live action FMV sequences featuring Agent Xtra.