Trine 3: The Artifacts of Power just received update #5! We added three more example levels to the level editor and one concept level to the game’s main menu, so check them out! I also recommend playing through the existing levels again, since you might run into something… or someone new. 😉
Other updates include multiple fixes and improvements to both the editor and levels, so hopefully they should also run smoother now! Check the Steam Community or the game’s installation folder for the full changelog.