alright this may be my best game yet, use arrow keys left and right or and d to move and Douge 20 asteroid then you will fight the boss by press space to use your laser up and down arrow or w and s to go up and down DOUGE the bosses attack you have 5 lives. good luck.
if the game starts with two spaceships press the green flag again until it stats with one spaceship. you can't use up and down while dodging asteroids
