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 $1.4M — a different platform, not this one.

Call of the Sea

It is 1934, in the far reaches of the South Pacific. Norah has crossed the ocean following the trail of her missing husband’s expedition and finds herself on a lush island paradise - a nameless, forgotten place, dotted with the remnants of a lost civilization. What strange secrets does it hold, and what might Norah unearth in her quest for the truth? Explore a stunning tropical island (meticulously modeled in Unreal Engine 4), brimming with fantastic sights, lost ruins and occult mysteries. Experience a charming character study of a woman on her quest to discover the truth of the disappearance of her husband and to find out who she really is, fully voiced by Cissy Jones ( Firewatch , The Walking Dead: Season 1 ). Immerse yourself in a story-driven adventure full of emotion, suspense and surreal surprises. Investigate the clues left by a previous voyage, piece together what happened, and solve a variety of clever puzzles.