How hard is it to get accurate sales on game downloads? Usually it's extremely hard but developer 2D Boy wanted people to know exactly how their recent "priced whatever you want" sale for their puzzle game World of Goo did. In two words, it was a "huge success" with 57,000 copies sold off the World of Goo web site. The average price people paid for the game was $2.03.

In a surprise, sales of the game via Steam went up 40 percent during the sale, and that was after sales went up 25 percent the previous week. 2D Boy has now decided to extend the World of Goo sale until October 25.
Download World of Goo Demo (32 MB)
Download World of Goo Mac Demo (32 MB)