Undead Labs has been working in relative secrecy for going on two years now. All we knew about the firm's cryptically (and temporarily) titled Class3 was that it had something to do with zombies and that it was coming to the Xbox 360.
Now, thanks to a new trailer, we know that the game is officially called State of Decay and it's also coming to the PC. Whether it's an MMO or simply a precursor to the rumored Class4 MMO is still undetermined. All that said, the trailer shows off plenty of open-world third-person shooting action, zombie-centric gore, and even a muscle car and the requisite rusty old pickup truck.
Undead says that State of Decay is set in an "open sandbox world [that] develops in real-time" and that gameplay involves "designing and fortifying your home base." Click past the cut for the full video.