Seconding this! Spelunky has a great mix of coding/ game design theory, and introspection into the game design process and the weird mixed feelings that come along with making games. Such a good book

So far I’m between the lenses one (haven’t finished yet) and the last I read, theory of fun. I also remind liking a lot Spelunky, might read again sometime

Spelunky by Derek Yu is probably the one that gave me the most bang for my buck when I was first really learning all the gamedev stuff