One is a video game released for the Sony PlayStation in 1997. The player controls John Cain, a man who awakes with no memory and one of his arms replaced by a gun, through a series of three-dimensional action stages. One was met with divisive reviews from critics, with some lauding its visuals, level designs, and cinematic feel, while others argued that frustrations with the gameplay ruin what had been a promising game. The game was released as a PSone Classic for download on the PlayStation Network on March 18, 2010.