Going through my Google+ feed last night, I saw quite a bit of people are big fans of AMC's The Walking Dead. So I'm fairly sure this game will get quite a bit of downloads. AMC has released a game into the Play Store, "The Walking Dead: Dead Reckoning". In the game you are placed as Shane Walsh, who is a Kentucky Sheriff who must make important decisions about his town as the outbreak starts.
I'm not a huge fan of The Walking Dead, but I know quite a few people that are. But I may download this game on my Nexus 7. As Tim, from Droid-Life puts it:
You see an old lady that's bleeding - will you help her? Get away from her? Blow her zombie brains out? It's up to you. It's an easy game, but the decisions will only get harder as the truth unfolds.
I'd probably blow her zombie brains out, but that's just me. The game is currently free on the Play Store, so go grab it before AMC finds out how popular it is and starts charging for it.