This is a 2 player game where you aim to destroy each others bridge and make the opposing player fall down. The controls for player 1 are left/right arrows - move up arrow - jump down arrow - shoot missile 0 key - repair bridge. The controls for player 2 are A/D keys - move W key - jump S key - shoot missile 1 key - repair bridge. To repair your bridge, stand near the gap and press repair key. This leaves you vulnerable for a short time.