"Gex" was released for the 3DO in April 1995. after around 21 months of development. It was also included later on in the 3DO's lifespan as a pack-in title bundled with certain units of the console. The game was later ported to the PlayStation and Sega Saturn, both of which were developed by Beam Software and released in North America on December 18, 1995 under Crystal Dynamics' brand and in Europe on April 5, 1996. A Microsoft Windows port of "Gex" was released on November 7, 1996 and a demo was bundled with the Microsoft Interactive CD Sampler. The game was later re-released on the PlayStation Store on November 6, 2009.