World of Goo is a puzzle computer game with a strong emphasis on physics, for the Wii, Windows, Mac OS X and Linux by 2D Boy, an independent game developer founded by Kyle Gabler and Ron Carmel, both former Electronic Arts employees.
The game is built around the idea of creating large structures using balls of goo. It is based on the prototype game Tower of Goo developed for Kyle Gabler's rapid game prototyping Experimental Gameplay Project. The game is divided into five chapters, each containing several levels. Each level has its own graphic and musical theme, giving it unique atmosphere. There is also a bonus meta-game called World of Goo Corporation, where the objective is to build the highest tower using goo balls which the player collected through the course of the game.
The main objective of the game is to get a requisite number of goo balls to a pipe representing the exit. In order to do so, the player must use the goo balls to construct bridges, towers and other structures to overcome gravity and various terrain difficulties such as chasms, hills, spikes or cliffs
More Info: http://en.wikipedia.org/wiki/World_of_Goo
postfix: I am not sattisfied because YT rejected my video after 15 mins uploading because it's too long. I decided to ut the first video on Dailymotion then.
EDIT:// http://www. It's the second video, the last mission finish and the final movie.
EDIT2:// others got better vids than me, because I can't record sound from ingame idk why ;[