The whole Earth, after the impact of a meteorite with viruses, was filled with mutants. But gradually people cleaned the surface of them. The rest of the mutants were driven underground, so now the basements are swarming with them. It is time to clear the monsters out of the basements.

Control keys:
F - Pick up weapons, ammo
1,2,3 ... Change weapons
WASD - Character movement
SPACEBAR - Jump
SHIFT - Sprint
Esc - Exit to the menu
LKM - Shoot