Last month we released our Editor on Steam, which made possible for users to create and share levels to Trine. There are editors available to both Trine Enchanted Edition and Trine 2: Complete Story.
And now, there are a lot of great community made maps on the Steam Workshop, which is awesome! So, go check them out if you haven't already. We also made a video to highlight some of our moments playing the custom maps, check out the short trailer below. Special thanks to the players who made the levels!
http://youtu.be/eCDESwyVV6o
If you can't figure out how to download or enable mods, you can find the instructions from our Wiki as well as other tips about custom levels.
Hopefully we'll see new amazing custom levels in the future too! :)
Note also that Trine 2 and Trine are also on nice -85% sale on Steam, if you or your friends still don't own them.