Outstanding. I learned the Flex layout by playing this simple game: https://flexboxfroggy.com/ (from the same author I believe). I wonder if there are examples of learning through playing a game that are as effective as these two.
I'm excited to come across these! Learning through gaming is great. This is how I was able to get as far as I have using VIM: https://vim-adventures.com/ I hope there are more out there!
Slime forest adventure has somewhat worked for me in the past as a flashcard game for Japanese.