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 approximately $81.4M — a different platform, not this one.
Darkest Dungeon®
Darkest Dungeon is a challenging gothic roguelike turn-based RPG about the psychological stresses of adventuring. Reclaim Your Ancestor's Estate Recruit, train, and lead a team of flawed heroes through twisted forests, forgotten warrens, ruined crypts, and beyond. You'll battle not only unimaginable foes, but stress, famine, disease, and the ever-encroaching dark. Uncover strange mysteries, and pit the heroes against an array of fearsome monsters with an innovative strategic turn-based combat system. Core Features The Affliction System – battle not only monsters, but stress! Contend with paranoia, masochism, fear, irrationality, and a host of gameplay-meaningful quirks! Striking hand-drawn gothic crowquill art style Innovative turn-based combat pits you against a host of diabolical monsters Narration system to celebrate your successes...and failures 16 (and counting!) playable hero classes, including Plague Doctor, Hellion, and even the Leper! Camp to heal wounds or deliver inspiring speeches. Rest your weary, shell-shocked characters in town at the Tavern or the Abbey to keep their stress in check. Classic CRPG and roguelike features, including character permadeath, procedural dungeons, and incredible replay Can you stem the tide of eldritch horrors erupting across your family’s ancestral estate? Descend at your peril! Awards and Honors PG Gamer: Best RPG of 2016 Game Informer - Best RPGs of 2016: 3 Awards IGN - Best of 2016: 2 Nominations IGF 2016 - 3 Nominations Rock Paper Shotgun - 50 Best RPGs of All Time PAX 10 - 2015 Game Debate Best Indie Game 2016 SXSW Gamer's Choice Nominee 2015 MMORPG - Best Indie RPG (Pax East 2014), Best RPG Nomination PAX Prime 2014 Indie Megabooth Selection - PAX East 2014, PAX Prime 2015 "Butcher's Circus" DLC to this game is currently not available on GOG.