This article is a stub. Please help the Doom Wiki by expanding it. Substation537A is the fourth level of Deep into the Code of 2002: A Doom Odyssey megawad. It was created and designed by Kristian Aro. 2002: A Doom Odyssey Maps E1M1: The Entry E1M2: Helicopter Bay E1M3: The Doomed Lab E1M4: Substation 537A E1M5: Combat Station E1M6: Toxic Treatment Plant E1M7: Service Base E1M8: Paradox E1M9: Lugano Base ZR-X E2M1: Station Alpha E2M2: Station Beta E2M3: The Lost Labs E2M4: Shotgun Blues E2M5: Fortress of Fatalities E2M6: Between Demons n' Insects E2M7: Puzzles to Solve E2M8: Total Disturbance E2M9: Dungeon of Hate E3M1: Gatehouse E3M2: Caves of Bosnia E3M3: Stronghold of Damnation E3M4: Hall of Ebola E3M5: De-Moon Side E3M6: Obituary Written E3M7: System Central E3M8: Spider Temple E3M9: The Lost Chord E4M1: Play School E4M2: Back to Base X E4M3: Hell Unleashed E4M4: Disreputable Stronghold E4M5: Indomitable Haunt E4M6: Dementia E4M7: Odious Grounds E4M8: Impossible Mission E4M9: Secret Wolfenstein Level Retrieved from "https://doom.fandom.com/wiki/E1M4:_Substation_537A_(2002:_A_Doom_Odyssey)?oldid=121694" Categories: Stubs Levels by name Community content is available under CC-BY-SA unless otherwise noted.