Already available for PC, the gorgeous downloadable platformer lets you swap between three different characters at any time, with the below trailer demonstrating the various capabilities of each. The PlayStation 3 edition will be $20, the PC version is $30, and Frozenbyte is working with Atlus in the hopes of bringing Trine to Xbox 360 one day. BOOM video 2231
To preemptively head off the inevitable comments, yes, there's co-op, and no, it's not online. The studio has discussed the possibility of adding online co-op later on, but cautions "it's not really something you should count on - you should buy (or not) the game based on the current features and not on any future 'possible' plans that we have."