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 $642.7K — a different platform, not this one.

Frozenheim

Become famous as the legendary hero of your Viking clan and notorious as the scourge of other jarls. Your exploits and deeds will be legendary. However, every legend has a beginning and yours begins on the shores of Frozenheim. For your village to prosper, you will have to make the most of the seasons by hunting, fishing, farming land, and gathering resources before the winter. Exploration will be key as the lands are as bountiful as they are dangerous. Once you have the lay of the land and a steady supply, you can start planning out and managing your city. In order to vanquish your enemies, you will have to raise your warriors and utilize their unique skills. Form shield walls and pin down foes with volley fire, then send your berserkers to crash into the enemy lines. Depending on how you develop your clan, you will be able to enlist powerful heroes, build devastating siege engines and imposing longships or even evoke the power of Ragnarok! Whether you prefer the fields of combat or the strategy table, Frozenheim has a mode for you. Relax yourself with the free-build mode or challenge yourself in the arena of the Jarl's tournament. Put your building skills to the test in survival mode or discover the story of Frozenheim in the campaign mode told from the perspective of the four major clans: Wolf, Deer, Crow, and Bear