Made by 3D Realms, Lobotomy Software, Aardvark Software, GT Interactive, U.S. Gold, FormGen, SEGA of America, MachineWorks Northwest, MacSoft Games, Devolver Digital, Abstraction Games, Tec Toy

Released on 19 April 1996

Age Rating: 16

Sensitive Content: Violence, Online Gameplay

Genres: Shooter, Puzzle

Themes: Action, Science fiction, Comedy

Mode: Single player, Multiplayer

Perspective: First person