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 $58.5K — a different platform, not this one.

Summoner

Summoners have toppled empires and challenged gods. They are venerated as saviours and feared as destroyers. With rings crafted by the ancient Khosani, the gifted can call forth demons, dragons, and elementals, but only the strongest can control the forces they unleash. Born with the mark of the Summoner, Joseph possesses a power greater than emperors and gods. As a child, he summoned a demon to save his village, and watched in horror as those he loved were destroyed. Nine years later, the armies of Orenia invade, and Joseph must confront the prophecy he was born to fulfill. Multiplayer notice: The game's multiplayer servers have been taken offline, however, multiplayer over LAN is still available. Traverse a beautiful, completely original world spanning two continents. Up to 16 different creatures to summon and control in combat, such as minotaurs, golems, dragons, and original fantastical creatures. Cast spectacular spells. Wield an arsenal of weapons. Clad yourself in the armour of a warrior.