Make a video game with Bitsy.
There are many game design programs and many different possible approaches to game design, but for me, the one that stands out is Bitsy. Created by Adam Le Doux in 2017 and released under an MIT license, Bitsy is, in the words of its creator: “A little editor for little games or worlds. The goal is to make it easy to make games where you can walk around, talk to people, and be somewhere.”