The Rendering — Joel Naftali

Thirteen-year-old Doug narrates in a series of blog posts (many interrupted by either his best friend, smart girl Jamie, or the artificial intelligence who mothers him, the avatar) how he came to temporarily save the world and to be branded a terrorist and a murderer. He was innocently playing video games in the employee lounge of the biotechnology center where his aunt was a director when an insane genius ex-employee broke in, stole the equipment to digitize anyone and make his own biodroid army, killed Doug's aunt, and blew up the center (and soon the nearby town). Doug managed to escape, accidentally creating three super-powered creatures, and gaining a electronics-destroying superpower of his own with which to fight the evil Dr. Roach.