Not sure who all here has played Trine or Trine 2, but I've dabbled with it a bit and think it's pretty cool. It's almost like a Lost Vikings type of game where you have 3 characters with different abilities that you use to figure out puzzles. Here's the wiki on it, "Trine is a side-scrolling action platform and puzzle video game, developed by Frozenbyte, originally released in 2009, and is now available for Microsoft Windows, Linux, Mac OS X, and PlayStation Network. The game takes place in a medieval fantasy setting and allows players to take control of three separate characters who can battle enemies and solve environmental puzzles."
Anyway...
Some news...
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"We are now officially releasing the Trine Editors on Steam for Windows – and to celebrate this, both Trine Enchanted Edition and Trine 2: Complete Story are free on Steam this weekend 16th-19th of October.
The games are freely available for everyone to install and play through their Steam Library for the duration of this weekend, so remember to tell all your friends who’ve always wanted to try the Trine games, but have not done so yet! The games are also available for purchase for a juicy sale, 80% off until Monday 20th!"
http://www.frozenbyte.com/2014/10/trine-trine-2-free-weekend-and-editor-release-on-steam/