I know a few people are interested in designing a level editor and since the concept is just so usable and there aren't any clones I can think of. I think the community should (will?) get together and make a clone of it with extra features and a built-in level editor. If you're playing their levels though, you should honestly pay them. I wish I had bought my copy before they pulled it, 3$ is a half pint of cheap vodka, I can totally spare that for some quality levels, but from the research I've done I don't think they'll be releasing a level editor for it or multiplayer support so as a community we should probably do that for ourselves.