Your mission in this cool time waster is to protect the planet by shooting down the falling asteroids and survive as long as possible. Use "A" and "D" KEYS to move. Use YOUR MOUSE to aim and click LEFT MOUSE BUTTON to shoot the asteroids to keep them away (note, bullet recoil spins your planet ). Shoot the star shaped red orb to make all asteroids explode which makes the field empty. The + (plus) makes your planet bigger. The - (minus) makes it smaller. Good luck!