Level: Doom E1M1: Hangar

Level: Doom E1M2: Nuclear Plant

Level: Doom E1M3: Toxin Refinery

Level: Doom E1M3: Toxin Refinery (Secret Exit)

Level: Doom E1M4: Command Control

Level: Doom E1M5: Phobos Lab

Level: Doom E1M6: Central Processing

Level: Doom E1M7: Computer Station

Level: Doom II Map 1: Entryway