Wave your hand over the circles- one turns you, and one shoots in whichever direction you choose. The direction you move and shoot is determined by what side of the circle you activate. It's hard to get a hang of, but once you do, you'll have fun. 5 levels, each a little harder. Have fun! The last has many enemies.
Me messing around again just for fun. Contains occasional flashes. The game this is based off of is no longer available, but it was called indestructible. Yes, it is possible. I've won it many times.