Move the rocket up and down with the arrow keys, press space key to fire lasers. You score 100 points for each rock you destroy, but you lose the game if a rock hits the rocket.
Taken from the book "Code your own games! 20 games to create with Scratch" by Max Wainewright (Scratch 3.0 edition). You can find this book at the Richmond Public Library: https://rpl.yourlibrary.ca/
