Play the game "Boxhead: The Zombie Wars" by using the arrow keys to move the character around each level and the space bar to fire weapons in an attempt to kill zombies. Each level introduces new zombies and new weapons, along with increasing the total number of zombies to kill.
The main controls in "Boxhead: The Zombie Wars" consist of using the arrow keys to maneuver a lone survivor in the four cardinal directions around a square map and the space bar to fire the currently equipped weapon. At the start of the game, only a simple handgun is available, though new weapons become available as you defeat each wave of zombies. Cycle through the available weapons by using the "X" key to move to the next weapon in your inventory and the "Z" key to move to the previous weapon. You can also use the number keys to equip a specific weapon.
At the start of the game, choose a difficulty level and a map set to explore. Each map contains a variety of obstacles, ranging from trees and stones to buildings that create elaborate mazes. Zombies move into the levels from the sides of the screen, though each level only presents a finite number of enemies.