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About game
The Ultimate Doom is a 3D sci-fi game where you take on the role of a solitary space marine fighting against endless waves of demons who have burst forth from the depths of hell on Mars.
How to play
Use the keys:
W to move ahead,
S to step back,
A to go left,
D to go right.
Press Space to jump,
X to crouch,
Shift to run.
Left mouse button (LMB) — to punch or shoot,
Mouse wheel — to switch weapons.