My new addiction

So thanks to a co-worker, I'm now addicted to Fantastic Contraption. It's a simple game: build a contraption (a fantastic one, preferably) using wheels and rods, and have it drive an object (a circle, square or rectangle) into a target area. Sounds straight forward, and the first few levels are pretty easy, but then the shapes get wierder, the obstacles get greater, and you have to do far more planning. Or extensive trial and error. Or both. Anyhow, I keep getting stuck, then solving the problem, then getting stuck again. The only advantage is there are only three more levels and I think I'll be done, meaning I can get back to my other addictions. Like, oh, Facebook Wrestler.