Move your fighter with the mouse, your finger, or the arrow keys, and fire with a click, tap, or space - two shots in the air at a time. The swarm flies in, forms up, and peels off in diving attacks. Divers are worth double points. Watch the boss tractor beam: get caught and it steals your fighter - shoot that boss down mid-dive to win it back and fly doubled up with twice the guns. Clear the swarm and the next stage comes in faster.