The game has 10 Prisons. 3 of which are considered Transport Prisons
. These are different from Classic Prisons as you will have a short timer on the right of the screen in which to escape from them or you will fail. They can each be done in a few minutes once you know what you're doing. You will need to collect keys in order to unlock the ability to play each of them. Keys can be obtained by escaping each of the 10 prisons in a unique way. Each prison has 4 unique ways to escape. These can be viewed in the PROFILE screen of your character select in the out-of game menus. If there is a filled-in key icon that means you have completed that unique escape for that particular selected prison. 2 are Multiplayer and 2 are Single Player for each prison. So theoretically you could do 4 keys in the first level.
Transport Prisons you have to escape from are:
1. Cougar Creek RailroadTrain ESCAPE
2. H.M.S. OrcaBoat ESCAPE
3. Air Force ConPlane ESCAPE