The Penal Zone represents the first of five monthly installments in the third season of the episodic series, collectively referred to as "The Devil's Playhouse" and sold at $34.95 by Steam and Telltale itself. Those that buy from either Steam or Telltale during the next week will get three unique in-game items for Team Fortress 2, with those that buy from Telltale also eligible to get a Collector's DVD for the price of shipping.
Along with PC and Mac, The Penal Zone is available for download on iPad via iTunes and PlayStation 3 via the online PlayStation Store, which also offers a demo.
ooo, didn't realize they went with the collective method on Sam & Max, too. I really hated buying each one individually.