The Joker Playable in Batman: Arkham Asylum for PS3

The Joker will be an exclusive playable character in the PS3 version
Releasing this new screenshot, Eidos Interactive and Warner Bros. Interactive Entertainment have announced that The Joker will be an exclusive playable character in Batman: Arkham Asylum for PS3. The character will be made available upon release as a free downloadable character through PlayStation Network and can be played in Challenge Maps from the game.