Hacking time! 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. You have to wait a second to get more ammo. Press x to make a cool effect to destroy many asteroids. 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: https://scratch.mit.edu/projects/484474288 Asteroid Breaker 2: https://scratch.mit.edu/projects/484512177