State of Decay, previously known as Class3, is an open world XBLA exclusive from Undead Labs. It focuses on survival, stealth, and evading the undead rather than running in guns blazing with hopes for the best. You can find survivors, form a group, find and fortify bases, and scavenge for supplies—basically everything you’d expect to be doing during a real zombie apocalypse, sans sobbing in a dark room while lying in the fetal position as you wait for the bad things to go away.