AMC and social games publisher RockYou have teamed up to offer The Walking Dead Social Game, in development at Eyes Wide Games. The gameplay is built from two major activities: setting up and maintaining base camps, and sending out scouts to scavenge for supplies. There's also some combat, naturally.
As you can see in the screen above, it's quite the colorful game. Inside Social Games has more screens, and the Facebook page has a few videos showing off some of the characters from the show.