Zombies want to destroy your air purifier machine. You must stop them by setting traps, using powerful weapons and throwing explosives on their head! The zombies move slow, but they are strong in numbers, so do not underestimate them! Spend your money on weapons and other new equipment to survive. Protect your machine at all costs! Use WASD keys to move, mouse to aim and shoot, R to reload, Q to change weapons. Press Space bar to throw grenade, 1 to 7 number keys to place a trap (when purchased).
