So yeah, State of Decay, released June 5th, 2013, it's a Zombie Survival Horror game, Only avadible (Can't spell it right) on XBLA (Xbox Live Arcade) for $20 (1600 Microsoft Points), And will soon be released for PC.
I've pumped a good 5 hours into the game already and it is well worth the money, it actually gets pretty intense at times, and you can switch between Characters, like if one is tired, or fatigued from too much exploring, you can switch to only other characters that are at a "Friend" trust level, (you gain trust with other characters by doing zombie hunts with them and such) and if one character dies, it's over for them, there is no respawning of players, that's it.
So if you are tempted to buy it, do so, it is very well put together and has pretty good graphics and story line to go along with it. The people that made this game, Undead Labs, are working on another game like this except it will have multiplayer, (pretty much like DayZ).