Bone up on your gaming knowledge with this gently ironic yet thoroughly informative guide to video game terminology, presented as a picture book for all ages. Attack! Boss! Cheat Code! A Gamer's ABC is an indispensable guide, a lively look at the language of video games that might actually bridge the gap between game-obsessed kids and their often-perplexed parents.        If you can decipher the following sentence, you don't need this book:      "This open beta game is in third-person but first-person is unlockable if you know the cheat code or install your own mod, but either way, for the best attack on the boss on this level, try to grab that power-up!"       Almost any 9-year old could translate for you but if you don't have access to one, try this book instead.