Its a fun shooting game where you shoot zombies and stay alive. There are one player and co-op mode with many different rooms. you can play death match mode, where you kill each other. You also need to collect as many weapons and power-up(killing a LOT of zombies, the higher the number of kills, the more upgrades you get). use arrow keys to move and space bar too shot. use the numbers 0-9 to change weapons. have fun! and good luck!