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 $2.6M — a different platform, not this one.

Secrets of Grindea

Secrets of Grindea is an old-school Action RPG with co-op support for up to 4 players. It is a tribute to and sometimes a parody of the old SNES games so many of us grew up with and loved! Journey through fantastical lands, and battle tons of different enemies and bosses in your quest for truth, friendship and, above all, finding the world's rarest treasures!   Key Features   A rich world filled with 300 unique, colorful characters and an engaging story to drive your journey forward. Co-op support for up to four players! Enjoy the entire storyline with your friends or call someone in to help with the more difficult challenges. Customization, customization, customization - design a character that represents you, then mix and match any of the 31 spells and skills across 9 different categories. 30 epic boss fights! Overgrown slimes, giant robots, mimics - we have it all! Side content - design your own home, fish, craft items, tame pets, partake in mini-games, grow plants - there’s plenty to keep you entertained when you want a break from the main story. And last but not least: Arcade Mode - Separate from Story Mode, the game includes a full roguelike version where you need to battle your way to the top on a single life, building a town of your own as you progress. How far can you get?