Tom Clancy's Ghost Recon is a tactical shooter video game developed by Red Storm Entertainment and published by Ubi Soft in 2001 for Microsoft Windows. It is the first game in the Ghost Recon series. It was ported to Mac OS, Xbox and PlayStation 2 in 2002 and to the GameCube in 2003. Ports for N-Gage and Game Boy Advance were planned, but later canceled. Unlike Clancy's other tactical shooter series, Rainbow Six, Ghost Recon is not based on any of his books. Together with Rainbow Six, SWAT 3, and Operation Flashpoint, game industry experts generally credit Ghost Recon with defining and refining the tactical shooter genre. Ghost Recon's success has spawned 2 expansion packs, Desert Siege and Island Thunder, as well as numerous sequels for video game consoles and the PC.