Ask HN: Favorite book on game engine design?

I love the idea of making games for canvas in-browser. It's super fun and generally not very hard to get going with simple stuff. I've made a couple of very simple ( and ugly ) games on canvas already. They're not great because I'm not a game dev, I'm just some backend dork. As an aside, this has been a great "intro to javascript" for me, haha.

Whether it's a good idea to build games in canvas or not is besides the point -- what I really need is a good "introduction to game engine development" so that I can have a stronger base to build my browser games on, and so I can learn the real fundamentals of game design.

What do you recommend?