No revenue estimate for GOG — its rating/review counts don't calibrate to sales the way Steam's do. The Steam version is estimated at $161.3K — a different platform, not this one.

Puddle

Dive into Puddle, a game unlike any other where you have to guide a puddle of fluid by tilting the environment to the left or right! Play carefully taking friction, gravity and temperature into account, and by using the unique properties of each type of fluid (water, oil, nitroglycerin, molten lava...) in a range of original, puzzle-packed environments. Conserve as much fluid as possible when crossing a variety of obstacles such as burning passageways, carnivorous plants and electric currents! Once you have mastered the challenges offered, why not share your achievements and medals with your friends via Leaderboards, and see who is the champion of physic-based puzzle games! Winner of the Independent Games Festival 2010. Features 49 levels of fluid-manipulating fun in addition to the GOG exclusive (on PC only) Pixel Level. Two difficulty modes: normal and extreme for those who are looking for a real challenge. Unique and intriguing stages: from a simple coffee break to the human body. The Laboratory mode with dozens of objects, backgrounds and liquids!