Warner Bros' download-only Batman shooter has been pushed back to a February release.
Gotham City Imposters is a team-based multiplayer game that sees gangs of wannabe Batmans and Jokers battling over territory in the Dark Knight's home city.
Gamers can customise these vigilantes with costumes modelled on familiar Gotham characters, as well as homemade weapons and gadgets.
The first-person shooter was first announced for Xbox Live, PlayStation Network and for PC in May 2011. It was original due to go live this month, but Warner has announced it will now be released in February.