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 $832.6K — a different platform, not this one.

Drake Hollow

Having followed the call of a mysterious crow, you find yourself trapped in The Hollow, a shattered mirror of our world plagued by a mysterious source of evil. Your only way home is to rescue the Drakes, rebuild their home, and drive out the enemies that have ruined their world. Explore, build and thrive together in this third person, coop, survival-building adventure. Play with 1 to 4 players. Go it alone, or recruit your friends to tackle the endeavors of exploring, building and defending. Rescue Drakes, build their homes, raise them, and reap the rewards of a thriving village. Keep the Drakes happy and healthy, and they'll keep rewarding you more powerful buffs – and gifts, to boot. Explore an endless procedurally generated world, populated by feral beasts and hazards. Build networks of waypoints to quickly traverse from place to place, and to ferry supplies back to your village. Expand and level up your camp to support your growing community. Add defenses to protect the village when away, and build increasingly productive improvements to provide food, water, and entertainment for your Drake buddies.