No 09 Gotham City Impostors
Gotham City Impostors is a first-person shooter multiplayer-only video game set in the universe of DC Comics’ Batman. Developed by Monolith Productions as well as published by Warner Bros. Interactive Entertainment, the downloadable game is played from the perspective of two teams each trying to kill the other: one with people dressed like Batman and the other with people dressed like his archenemy, the Joker.
Mechanically, it is pretty sound, and there is so much scope to develop the idea into something much greater. Sadly, its console servers were shut off after going free-to-play, with the PS3 version being taken offline in 2014.