The instructions are listed in the game. Click the green flag to start and during the game, click the green flag to restart, it can replay! (Full Screen For Best Gameplay) Scroll down for more - Kill as many zombies as you can without dying. - Use the arrow keys or ASWD controls to move around. - There is a MedKit in the game you can use to restore your health, but it only appears when you have 2 or less lives left. - When you have no ammo, it will automatically reload so you won't have to worry about reloading. - Last but not least, have fun! my friend in history class keeps playing this :skull: