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 $655.3K — a different platform, not this one.

King's Bounty: The Legend

Become a hero in a fantasy world of fearless knights, evil mages, wise kings and beautiful princesses. Explore the land, command armies and accomplish quests for your king to reap great rewards... Or suffer devastating defeats. The gameplay is divided into two major sections: adventure mode and tactics mode. While playing in adventure mode you control your hero in real-time, seeking various treasures, fighting monsters and accomplishing quests tasked to you by the local stewards. Once in tactics mode you assume the role of a war chief, leading your troops in tactical turn-based combat. Battles take place on land or sea, in dungeons or castles or even in certain items! The hero himself doesn't participate in the combat, but can assist his troops by casting spells or summoning different creatures. Absolutely addictive gameplay closely resembling the famous Heroes of Might & Magic series A challenging, but at the same time familiar and intuitive, combat system Charming, well-designed locations, full of subtle details