Trine 2: Goblin Menace is now available on Steam, offering the new DLC for Frozenbyte's platformer sequel at a 15% discount. Additionally, they have a sale where each Trine game is 75% off, with even greater savings on a bundle of the whole shebang. Here's word on the DLC:

Trine 2: Goblin Menace introduces six new skills to the Trine 2 game world and an all-new campaign, spanning six unique levels, further improving the award-winning visuals of the original Trine 2. All the new skills are also playable in the original game and provide additional fun in multiplayer for all Trine 2 players. The Goblin Menace campaign thrusts the heroic trio of Amadeus the Wizard, Pontius the Knight and Zoya the Thief into an adventure chock full of goblin villainy.