Click the green flag to start. Use w to move the spaceship up, a to move down, a to move left, and d to move right. Use the mouse to point where to shoot and the space bar to fire. Don't smash into asteroid or your ship will explode. The score is your timer and if you go to 0 you lose.
I used a book to make this. Asteroid Breaker 2: https://scratch.mit.edu/projects/484512177 Asteroid Breaker CHEAT MODE!!!: https://scratch.mit.edu/projects/484513577