Final Doom brings together two standalone episodes, TNT: Evilution and Plutonia Experiment. Each of them comes with 30 regular levels and 2 secret levels.

TNT: Evilution features a mostly new soundtrack while Plutonia Experiment uses the music from Doom and Doom II. Team TNT developed the levels for TNT: Evilution and it was going to be released as a free fan pack until id Software purchased the rights to the levels and released them as the first half of Final Doom.

TNT Evilution

Level 1: System Control
Level 2: Human BBQ
Level 3: Power Control
Level 4: Wormhole
Level 5: Hangar
Level 6: Open Season
Level 7: Prison
Level 8: Metal
Level 9: Stronghold
Level 10: Redemption
Level 11: Storage Facility
Level 12: Crater
Level 13: Nukage Processing
Level 14: Steel Works
Level 15: Dead Zone
Level 31: Pharaoh
Level 32: Caribbean
Level 16: Deepest Reaches
Level 17: Processing Area
Level 18: Mill
Level 19: Shipping/Respawning
Level 20: Central Processing
Level 21: Administration Center
Level 22: Habitat
Level 23: Lunar Mining Project
Level 24: Quarry
Level 25: Baron’s Den
Level 26: Ballistyx
Level 27: Mount Pain
Level 28: Heck
Level 29: River Styx
Level 30: Last Call

Plutonia Experiment

Level 1: Congo
Level 2: Well of Souls
Level 3: Aztec
Level 4: Caged
Level 5: Ghost Town
Level 6: Baron’s Lair
Level 7: Caughtyard
Level 8: Realm
Level 9: Abattoire
Level 10: Onslaught
Level 11: Hunted
Level 12: Speed
Level 13: The Crypt
Level 14: Genesis
Level 15: The Twilight
Level 31: Cyberden
Level 32: Go 2 It
Level 16: The Omen
Level 17: Compound
Level 18: Neurosphere
Level 19: NME
Level 20: The Death Domain
Level 21: Slayer
Level 22: Impossible Mission
Level 23: Tombstone
Level 24: The Final Frontier
Level 25: The Temple of Darkness
Level 26: Bunker
Level 27: Anti-Christ
Level 28: The Sewers
Level 29: Odyssey of Noises
Level 30: The Gateway of Hell