It was actually inspired by a Dungeons & Dragons campaign played by the founders of id Software John Romero had given a demon lord the key to overrunning the material plane in exchange for a magic katana because he's an edgy little bitch like that, and John Carmack (the DM and one of the many forms of Tzeentch) decided it made a good premise for their new 3D game. The father of the first-person shooter, the original ass-kicking demon-slaying 3D slaughter-fest, Doom is a franchise that demands respect even in the hallowed halls of /tg/. Eat leaden death, demon.' – Terry Pratchett Up until Doom, no one seemed to have thought about the double-barrel shotgun. 'Over the centuries, mankind has tried many ways of combating the forces of evil. If you don't already have the first level's music in your head, you may be on the wrong site.