Gotham City Impostors is more playful take on the city of Batman. The multiplayer-focused shooter isn't taking itself too seriously, as we can see from a new animated trailer. Two friendly neighbors (with oddly sinister voices) by day turn into brutal enemies by night, and chaos ensues.

Beta invites have started going out, and the test itself started last night. The game isn't due until 2012, so occupy yourself in the meanwhile with zany, violent action.