How to play?
Call Of Cause
DESCRIPTION: Your city has been invaded by zombies in this epic 3D shooting game! Play as the hero and shoot to kill as many of the zombies as you can.
INSTRUCTIONS: WASD to move. Mouse click to aim and shoot. R to reload. E to pick up. Tab to lock camera. Q to roll. C to crouch. Z to scope. Left Shift to sprint. Spacebar to jump.