Kill! Zone - The Doom Wiki at

Kill! Zone, Episode 1: "The Trek Begins", is a Doom II episode replacement mod of seven levels, created by Donald R. Howard and Heuristic Software in 1996. The WAD uses original soundtrack composed by Scotty Ray Warren, Chris Torgersen, Bob Reganess and David W. Keefer.

Helltime Hunter - The Doom Wiki at

Sony PlayStation - The Doom Wiki at

Hideous Destructor - The Doom Wiki at

E3M1: Hell Keep (Doom), Doom Wiki

Doomguy - Wikipedia

Immora - The Doom Wiki at

Summoner - The Doom Wiki at

Guardian of Hell - The Doom Wiki at

MAP30: Icon of Sin (Doom II), Doom Wiki

Killzone 2 - Wikipedia

Intermission screen, Doom Wiki