In early 2011, Microsoft quietly announced an ambitious zombie game called Class3. Then said nothing about it for 18 months. It's back today, though, with a new name - State of Decay - and it's not looking too shabby.

Yes, zombies are played out, and yes, Microsoft themselves released a bleak zombie game only last month, but State of Decay tries a few new things like putting the emphasis on teamwork and fortification instead of just the killing.

Of course, between 2011 and now DayZ came along and revolutionised the way we look at zombie games, but that's not the fault of Microsoft or developers Undead Labs.

State of Decay will be out on Xbox Live Arcade and PC.