Unchained

Megawad: Doom 2
Map01 mod- 1 level
Port Type: GZDoom, ZDoom
Author: Doc Foley
Beta/ sample level of upcoming megawad
Music: Midi of Powerman 5000 - When Worlds Collide

Plot: After the events of Final Doom Doomguy returns to Earthbase where he witnesses a corporal murder, of innocent citizens. Doomguy kills him, but authorities don't believe him so he's court-martialed and teleported to Terminus 6 -a Correctional Center on Mars.
One week into his time there, the experiments taking place caused another invitation from Hell. Oh well, it's not like he didn't warn them

Stylistically, its a mixture of TNT, Plutonia, and Doom 2