Geo and Reo is a action/adventure/fighting/co-op game that was first released on January 9, 2001 in Japan on PlayStation 2 and September 25, 2001 for GameCube. It was later ported to the US and Europe on May 23, 2002. The game was also released on Xbox, Universal Odyssey, Starfish Plasim, and Game Boy Advance on July 11, 2002, while the GBA port was only released in North America. It was developed by Square Electronic Arts (now known as Square Enix) and published by Acclaim Entertainment.