Use the W,A,S and D keys to move. You can toggle through your weapons by pressing the one through five keys. If you want to visit the weapons shop just press P to pause the game. Use the H button to heal if you can, and F will repair your barricades. You'll play from a top view where you get to walk around your train to see where zombies are trying to get in. You can shoot them before they even get in and then fix the barricade. Keep looking around the train when it's stopped to make sure nobody has broken in without you knowing. As you kill, you will earn money to use at the shop to buy better weapons and health potion. There is no end to the fun or the zombie killing in Zombie Train so get started now!