World of Goo developer 2D Boy has reached one million sales of its sticky puzzler across both Mac App Stores. In classic style for the indie developer, the duo are being highly transparent about where their sales came from. The breakdown:

"The Mac version has been out for a while and selling well," 2D Boy's Ron Carmel told us. That million only covers Mac iOS and OSX sales combined through their respective App Stores.

2D Boy also noted the free Android demo of Goo has been downloaded 450,000 times, and the full game has been purchased 70,000 times since its November launch.

This article was originally published on Joystiq.

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