Developed by id Software, and originally released in 1993, Doom pioneered and popularised the first-person shooter, setting a standard for all FPS games. The critically acclaimed sequel, Doom II, followed in 1994. Now the definitive, newly enhanced versions of Doom + Doom II are available as a combined product with all its expansion episodes, plus a brand new episode "Legacy of Rust", created in collaboration by id Software, Nightdive Studios, and MachineGames.