Warner Bros. has announced its definitive version of Batman: Arkham City in the shape of the Game of the Year Edition. The expanded version of Rocksteady Studios’ Batman-sim is scheduled for release in the UK on 7th September for Xbox 360, PS3 and PC.

Fans of the Dark Knight will be able to access more than two hours of fresh gameplay in the shape of new chapter Harley Quinn’s Revenge, while the disc will also include all five previously released DLC packs.

Fans who already own Batman: Arkham City will also be able to access the new gameplay by downloading the Harley Quinn’s Revenge DLC pack, which will be available in all international markets beginning May 30 via PSN and Xbox Live Marketplace.

Harley Quinn’s Revenge sends players back into Arkham City to face their final challenge as they interchange between playing as both Batman and Robin in a bid to uncover Harley’s vengeful plan and shut the gates on the urban mega-prison forever. In addition to experiencing a new storyline, fans can explore new environments and face-off against Harley’s all new gang of hired goons – the perfect fodder for Arkham City fans looking to dust off their utility belt one final time.