Navigate your fighter plane and bring down as many enemies as possible! As soon as you've brought down an enemy plane, you can grab the coins. Now and then powerups and repair items will appear, that are worth an extra life. That might be really necessary, because you'll be attacked more and more violently!
Use the mouse or the keyboard to play this game. In the last case, use WASD to move and K to shoot. In both cases you press E to throw a bomb and F to activate the autofire mode.