So I purchased Windosill today. It's a small game (made with flash) and it's only $3 on Steam. It's a puzzler and it seems to involve some interesting physics. I will admit, it was great fun (kind of trippy too...) but it is WAYYYYY too short! I was kind of disappointed that I finished it so fast (In about 20 minutes?) But, then again, I guess it was only $3.
At a minimum, however, I believe it is worth checking out!