Arie Kaplan 
Awesome Inner Workings of Video Games [PDF ebook] 

Gamers, beware-your video games can think for themselves! Ever wondered what’s inside the plastic of your video game console but don’t want to crack it open to find out? Crack open this book instead! You’ll learn what computer code looks like, how a game console’s "brain" makes decisions, and how its memory allows you to return to play each day without starting from scratch.