No revenue estimate for GOG — its rating/review counts don't calibrate to sales the way Steam's do. Reviews and prices only.

Tux and Fanny

When you take a closer look, everything is an adventure. Tux and Fanny are two friends who live in the forest and just want to play soccer but their ball is deflated. This simple premise hides a complex and epic adventure. Play as both Tux and Fanny as well as other characters from their world. All of the characters will have to work together if they're going to inflate the ball. Play a multitude of diverse mini-games which you'll collect as you progress through your journey, each with their own unique rewards. Enjoy a world far away from consumerism and competition - serene, calming, and magical. The world of Tux and Fanny embraces life's simple pleasures. There are secrets hidden at every turn. Can you find them all? "Tux and Fanny is unique and gorgeous: a strange treasure." - The Guardian "Tux And Fanny is one of the most extraordinarily involved, detailed, and strange games I’ve played in forever." - Buried Treasure