For 1 player: use arrow keys to move, and use K to shoot left and L to shoot right. Touch a key to recieve ammo, after a few seconds, also touch correct key to advance in a level. For 2 player: once the green flag is clicked, press 0 then use the keys A,S,D,W to move left, down, right, and up, use Q and E to shoot left and right. Touch a key to gain ammo, and if it is the right one a level also.
