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 $2M — a different platform, not this one.

Botanicula

Botanicula is a point'n'click exploration game created by Jaromír Plachý and Amanita Design. It’s about a group of five friends -- little tree creatures who set out on a journey to save the last seed from their home tree, which is infested by evil parasites. The gameplay is about exploration, solving little funny puzzles, meeting strange tree creatures, and paying attention to the music as it provides you with useful clues and hints. The whole game takes place on one huge and strange tree that is inhabited by bizarre and freaky creatures. This is not an ordinary game. It is far from it. Everything about it is curiously unique and very surreal, and that alone makes it worth checking out. It's just not possible to be bored in this game, as every new location brings something new and intriguing. The exploration elements are made with incredible polish and attention to detail, and the same applies to the musical score, sound effects, and, most importantly, the visuals. The synergy of those elements create a beautiful and memorable adventure that is enthralling beyond measure. Visually stunning and emotionally touching game that is as unique and bizarre as it is fun. Highly interactive environment that encourages experimentation and exploration. Stylized soundtrack and sound effects, created by Czech alternative band DVA, are beautifully synchronized with what is happening on the screen. Special Botanicula language.