When I was first sold on Trine, all I needed to hear is that it was vaguely similar to The Lost Vikings. I sought it out that very day.
Over time, the magic of Trine kind of waned a bit, and the dream almost came crashing down entirely with Trine 3. I had the chance to play the first six levels of Trine 4, and was pleasantly surprised at how Frozenbyte seems to have turned things around.
Source: Destructoid Trine 4 is a whimsical return to form for the series