Is Batman arkham city free roam?

Transformers Revenge of the Fallen both for the PS3 and Xbox 360 have an option of free roam. In the game they have many different locations, each location has about 1-2 missions. By earning either a platinum, gold , silver, or bronze medal on each of those 1-2 levels, you unlock the ability to free roam. Dont worry, it is extremely easy to earn even a gold medal. I would rate the game 9.5/10. It is very fun, lots of action, and of course, multiplayer online. A MUST HAVE FOR TRANSFORMERS FANS.