In what has to be a record, over 100 downloadable content items have hit Xbox Live Marketplace for Gotham City Impostors prior to release. The DLC is generally cosmetic items, like Jokerz Pants. The customization is a large part of the game, much like Brink, in which players are dressing up their own unique Batman or Joker fanboy outfit.
Hopefully, the DLC will be visible and purchasable in-game, because it's hard to believe any gamer would be able to peruse through a hundred costume bits on Marketplace - especially when even more are on the way.
Gotham City Impostors arrives today on PC, Xbox 360 and PlayStation 3, and costs 1200 Microsoft Points ($15 USD).