Thank you for the kind words! I am also quite excited about the new points in game design space that RL will unlock and am planning write another blogpost on that topic.

I quite like https://karpathy.github.io/2016/05/31/rl/ as an introduction to some of the ideas behind modern RL. Beyond that, I just recently found out about https://github.com/andyljones/reinforcement-learning-discord... which lists a lot of other high-quality resources.

CodeCraft is a programming game which you can "play" by writing a Scala/Java program that controls the game units. It's not actively developed anymore but still functional: http://codecraftgame.org/