Earth has long been captured by mutants. People descended deep underground. Now mutants prey on people in underground labyrinths. You are defending one of the upper mazes. Do not let the mutants penetrate below.

Control keys:
F - pick up weapons, ammunition
1,2,3 ... change weapons
WASD - Character Movement
SPACEBAR - Jump
SHIFT - Sprint
Esc - Exit to the menu
LKM - Shooting