Frozenbyte has announced for next spring a new DLC dedicated to the colorful platformer Trine 4: The Nightmare Prince,entitled Melody of Mystery. Amadeus, Pontius and Zoya will have to face a spirit freed by mistake; the adventure can be played, as in the original title, also in a cooperative and will include new puzzles that will add elements such as ice sheets, magnets and crystals to interact with.

Next up is the trailer for the content in question.