This is a great independent game that I have been following for a very long time. I'm not sure how well-known it is outside of the official forums (besides having been mentioned on G4 several times). Basically, it's a physics-based puzzle game, where you have to construct structures out of balls of goo- it may seem easy, but the connections warp easily, and with many different types of goo (each with different characteristics), it is extremely entertaining from start to finish. The game comes out a week from today (13th), but if you pre-order by tonight, you will get it early (within the next few days). You can go to 2dboy.com for the official site, or see the forums (I'm a mod, my account is Dil999).
Not totally sure what that means, but the site may have been down for a little yesterday. Thousands of people were downloading the game at once.