A free DLC pack for the Xbox 360 version of Gotham City Impostors, a game loosely based on Batman, has been released today adding new maps, weapons and costume choices.

The DLC pack is also said to bring fixes to the game's matchmaking system.

The DLC pack includes:

Matchmaking Fixes : Numerous additional fixes to matchmaking have been made, including join-in-progress functionality!

: Numerous additional fixes to matchmaking have been made, including join-in-progress functionality! New Map, Weapons, Gadgets and More: The 25th Floor map, the Kingmaker and Falcon Blade weapons, the Toxic Gas Support Item, and a new Fun Fact are all available right now!

The 25th Floor map, the Kingmaker and Falcon Blade weapons, the Toxic Gas Support Item, and a new Fun Fact are all available right now! New Costume Choices: Dress up your Impostor like a lunchador, a corporate schlub gone mad, and so much more!

Gotham City Impostors is available on Xbox 360, PS3, and PC for 1200 Microsoft Points, or $15.

Warner Bros. Interactive Entertainment has said the same content will be released for PC and PS3 in the "near future".