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 $38.1K — a different platform, not this one.

Montague's Mount

The mixture of cold Atlantic water and coarse sand in your mouth brings you back from unconsciousness. Surrounded by the wreckage of a boat’s hull, you can only draw one conclusion: your vessel has been torn apart by the submerged rocks. The secrets of the island must be uncovered if you are ever going to find a way to escape. Where is everyone; is the island really uninhabited; and what is lurking within the isolated caves? A disturbing psychological thriller set in the bleakness of an abandoned island, combining exploration and in depth puzzle solving. Montague's Mount is an exploration game with a story that leaves questions unanswered and open to interpretation. The developers have announced that they will return to Montague's Mount in one art form or another. Voice narration by Derek Riddell (Ugly Betty, Frankie, No Angels, and more). The first game to explore and promote the Irish language (Gaeilge). Desolate yet beautiful environments filled with dark secrets and challenging puzzles.