Fantastic Batman Secrets That You May Not Be Aware of

Hints about the events of Arkham City were tucked away in a room fans never found.

A lot and I mean a lot of Batman fans did not figure out that inside Arkham Asylum there would be clues about the next game Arkham City. Many were dumbfounded and surprised that they missed this important Easter egg. The blueprint clearly showed that the developers started planning Arkham City seven months before Arkham Asylum was even completed. This allowed the developers to include a hidden room, which teased what was to come in Arkham City.