Move your character using the WASD keys to scan the area for zombies. Target at zombies by swiping your finger across the screen. Fire by tapping the left mouse button. Recharge your weapon when ammo is low by tapping the reload button. Collect scattered supplies like ammo by walking over them. Endure as long as possible by evading zombie attacks and managing your resources. Move forward by eliminating more zombies and discovering new areas.