World of Goo
I came to know World of Goo in a interesting article by Jeff Atwood about software piracy, where he says that games like these don't deserve to be pirated, and he's right.
I'm not much of a gamer, but this game is simple yet very addictive. I'm writing about it because it's not just another game released by a large game company that builds games in nearly cold mechanical way. World of Goo is a game that the first time you play it, you can tell that it was made with love, every single detail of it.
The game was developed by a two-man team (2D-Boy an indie game studio), and it's the most original game made in the past few years and it has excellent graphic details with that cartoonish feeling.
World of Goo is available for Mac, Windows and soon will be available for Linux too, and it's worth every dollar out of the twenty that it costs. If you wish to try the demo click here for the Mac version or here for the Windows version.
Link: www.worldofgoo.com