Now you can enjoy Gotham City Impostors (free to play on Steam!), the action-packed, online shooter, with the Gotham City Impostors Professional Kit! The Kit offers immediate access to weapons, gadgets, skins and more, so you can build your character just the way you want. Gotham City Impostors is an original first-person shooter where up to 12 players battle for control of an unhinged Gotham City overrun by impostors inspired by the DC Comics characters Batman and The Joker.