The fourth scratch project that we made was called Asteroids. Asteroids was basically about avoiding asteroids that can damage the UFO. So you can use your arrow keys & your WASD keys to move the UFO around. If you hit the asteroid or your score gets to zero, then you die, and the highest score that you get is recored in a high score.
Beware! The high score will reset if you run out of time. We will credit this project to Al Sweigart.