Frozenbyte announces that the Trine series has sold over seven million copies worldwide. They celebrate the news with the release of the level editors for Trine and Trine 2 on Steam, with each game currently carrying an 80% discount. Also, along with the previously mentioned free Trine 2 weekend, the original Trine is free on Steam this weekend as well. Here's word on the editor:

The editor for the Trine games gives users a first-hand look at the development process. Players can now do the same things to Trine or Trine 2 as the developers; They can edit existing maps to their liking, create entirely new ones from scratch, or even create a completely different game. The mods can then be published on the newly opened Steam Workshop pages for Trine and Trine 2 for everyone to try. While the editor software might take some time getting used to, a growing open wiki with helpful guides for getting started has been made available at www.frozenbyte.com/wiki.