Trine 2 is, thankfully, still on track for 2011, and today, developer Frozenbyte showcases the game's new Unlimited Mode. We're talking about a trailer, of course, and while the video is actually a promoting the new Humble Frozen Synapse Bundle, it starts off introducing the Trine 2 co-op mode.
Basically, the regular game restricts players to either Wizard, Thief, or Knight, since those three are the main characters in the campaign. In the separate Unlimited Mode, however, folks can play as any variation they choose, whether that's three Wizards or two Knights and a Thief. Obviously you should still go through the campaign for story content, but Unlimited provides a fun distraction and is available as soon as you start the game.