Boxhead 2Play is a game in the Boxhead series, a series in which players face off against zombies using a variety of weapons on various maps using box-shaped characters. In addition to having single player mode, just like previous games in the series, this is the first Boxhead game that allows two people to play together using one computer. Boxhead 2Play allows the two players to either cooperate to fight against zombies or fight against each other in a death match.
In single player games, the controls for Boxhead 2Play are the same as in previous Boxhead games. The arrow keys are for movement, the spacebar fires weapons, and the number keys cycle weapons.
When two players are playing together, one uses the arrow pad for movement, the question mark key for firing, and the comma and period keys for cycling through weapons. The second player used the WASD keys for movement, spacebar for firing, and the Q and E keys for cycling weapons.
The main feature of Boxhead 2Play is cooperative mode, in which the two players are placed in whatever room they select to play in and receive a pistol. Zombies come in waves from the entrances to the room and follow the players. Touching a zombie will cause the player to lose health. Killing multiple zombies in a short period of time will increase the score bonus, which in turn unlocks new weapons and weapon upgrades. As players move through the waves, the number of zombies increases, and zombies that can shoot fireballs are also introduced, though much rarer than
If a player takes too much damage, they will die. In cooperative mode, the player will resurrect a short time after they died. After resurrecting, they will have a period of invincibility. If both players are dead at the same time, they lose.
Boxhead 2play also allows players to battle against each other. The arenas for battling each other are the same as in cooperative mode, but there are no zombies. Instead, the players are trying to kill each other. Each player starts with only a pistol, and new weapons are unlocked not through repeated kills but through finding orange boxes on the ground that contain ammunition for a random weapon. When a player dies, the other player scores a point and the player resurrects without any weapons but their pistol. Games continue until the players reach 5, 10, 15, or 20 points. The point value for the game can be chosen by the players prior to starting the game.