Batman: Arkham City players are still to find some secrets

Batman: Arkham City has been out for seven months, but Rocksteady has confirmed some of its secrets are yet to be uncovered. What the heck is wrong with you lot?

"There are still three or four things that people haven't seen - some of them very subtle things," Arkham City director Sefton Hill said at a panel at Kapow! Comic Con, as reported by IGN

"There's one that we had right in one of the first demos that we did that nobody has found - it's in there if you look hard enough."

Hill said Rocksteady had been surprised by how quickly some of the game's more obtuse mysteries had been unraveled.

"Some of them we put in there that were really obscure were found within a week [like the Scarecrow code]," he said.

"We didn't think anyone would ever solve that, but it only took people two days."

Batman: Arkham City is available for PC, PlayStation 3 and Xbox 360 and will releases as a Game of the Year edition in the US at the end of the month, before spreading elsewhere in September.