Splinter Cell: Double Agent is a video game that features Sam Fisher as he once again works for the black-ops unit of the NSA called Third Echelon. Double Agent was initially released on October 17, 2006 on the XBox 360 but was followed by the PlayStation 2, XBox, GameCube, Windows, Wii and PlayStation 3 versions shortly after. The game runs of the Unreal Engine 2.5 giving it superior lighting, shading and visual effects.