Soldier of Fortune (also known as SoF) is a first-person shooter game created by Raven Software and published by Activision on March 27, 2000 for Microsoft Windows. It uses a modified Quake II engine. It was later released on the Sony PlayStation 2 as well as the Sega Dreamcast. Loki Software also made a port for Linux. Based on its success, Raven Software and Activision later published Soldier of Fortune II: Double Helix in 2002 based on the Quake III: Team Arena engine. Initially released for Windows, the sequel was later ported to the Xbox. A third game in the series, Soldier of Fortune: Payback was released on November 14, 2007. [source:wikipedia]