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 $29.5K — a different platform, not this one.

Heroes of the Monkey Tavern

After countless days and nights celebrating within the infamous Monkey Tavern, our team of adventurers have spent every last penny... Their fates, however are about to change... Like a gift from the gods, in walks a mysterious stranger who points them towards a high tower full of invaluable treasures. It doesn't take much more to rouse their thirst for adventure. You will enjoy exploring a dungeon full of riddles, dangerous enemies and vicious traps. And if luck favours... you will discover secret passages sheltering legendary weapons and armours. Key Features: Dungeon exploration in grid-base movement 8 classes 3 difficulty levels 2 hours of intense music Static real time fights 22 different enemies, including 6 bosses Full keyboard and gamepad support Numerous traps and secrets More than 100 unique items