"2D Boy's World of Goo is a fast and obvious pick for indie game of the year for myriad reasons, and in the spirit of showing, not telling, fellow indie developer David Rosen of Wolfire picks apart just about damn near every one in this lengthy and very incisive video. Although heavily design oriented, it also makes a smart introductory primer on the game, should you not mind getting a peek at its later levels, but it's at its best elaborating on all the brilliant little details you intuited but perhaps didn't explicitly notice." From http://www.offworld.com/2008/12/at-the-core-of-the-world-of-go.html ...