Diary of a Minecraft zombie

"Minecraft has gone through another major update. Normally, a few things might disappear . . . but this time, half of the Minecraft Overworld has disappeared! The only way for Zombie and Steve to figure out what happened is to travel back in time. If they can unroll Minecraft back to a previous update . . they might just be able to save the Overworld. But it's not going to be easy, because the Evil Corporation and its Agents are causing them trouble at every turn. Will Zombie and Steve be able to save their friends, and bring Minecraft back to being the kid friendly game loved all over the world? And what's the deal with the Evil Corporation"--Back cover.