The indev, cute physics platformer Nikki and the Robots is now of the version 0.3 “Edward” (which is completely open source). Also a level making contest has been started.
Winning designs will be upgraded with great graphics by the game developers and made fit into the game’s main story.
Full versions of the game (once it’s done) and a t-shirt are awaiting winners. The deadline is July 7th 2011.
More info on the contest, including level editor tutorial text & video in this post.