Special add on to play as Joker in Challenge mode. For stealth challenge, it's just how well you could use. Batman: Arkham Asylum Official Trailer - " Play as Joker " [Exclusively for the PlayStation 3 System] (Jun 1. Okay well to play as the joker you need to go into Challenge mode. That is the only place you can play as him. You don't need to make a new save i believe.