use the arrow keys to move around and use space or the down arrow and shoot all the asteroids. If you get suck and there no more asteroids left press y to fix it i do read comment so if you want me to add something or to fix something i'll try. Also sometimes the bullet doesn't hit, sorry.
I based it off the original game made in 1979 by Lyle Rains, Ed Logg, and Dominic Walsh. Good Luck!!!!!