Doom (Longbox) for the Sony PlayStation 1 is a seminal first-person shooter (FPS) game where players assume the role of a space marine battling hordes of demons and the undead through a series of levels on Mars and its moons. Originally developed by id Software, this PS1 adaptation comes packaged in a distinctive long cardboard box, a style typical of early North American PS1 games. Its fast-paced action, labyrinthine levels, and 3D graphics solidified Doom's legacy as a foundational title in the FPS genre and video gaming as a whole.