After the demonic invasion was over, you and your marine squad were sent home in a ship from Mars. While you were sleeping however, you wake up to see everyone dead, flooded corridors, and demonic howls that sound strangely familiar.
The demons had retaliated in desperation, and you have to get back into the action to save the rest of your squad.
Credits:
VGMusic, GZDoom Builder Developers
Base:
New from scratch
Build time:
1 month because I got very bored with it for quite some time but later picked it up again