space rocks
I took a long break from coding a few years back. I spent part of that time away getting a master's in education, and taught high school math, physics, and computer science. One of my professors roped me into writing a book about making games with Scratch. Hey, it's even on AbeBooks.
Below is the project a reader builds, a simple Asteroids. The reader can then tweak it as they wish.
Use arrow keys to move, speed up, and slow down. And of course, hit the space bar to blast those pesky rocks!