http://undeadlabs.com/about-state-of-decay/
It is a zombie survival game coming out for Xbox 360 (And I believe PC) as an arcade game.
State of Decay is our ambitious zombie-survival open world game currently under development at Undead Labs for release on Xbox 360 / Xbox LIVE Arcade and PC.
We’ve all sat around with friends, debating the best ways to survive the zombie apocalypse. Well, the time for speculation is over; State of Decay will let you put your personal survival plan to the test.