It is a 2 player game, as player one use arrow keys to go up and down and spacebar to shoot. As player 2 use W and S to go up and down and D to shoot. Shoot the zombies to increase your score. If a zombie gets past you, the score that you have will be the number of zombies that then spawn. [Sometimes it is quite laggy] Press H to turn player 2 off.
My brother was first to try it and I slightly changed 20 games to create with scratch.
