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 $1.6M — a different platform, not this one.

The Testament of Sherlock Holmes

You are Sherlock Holmes, and this is your investigation! Become the greatest detective of all time in The Testament of Sherlock Holmes, a twisting, turning investigation game set in a faithfully-reproduced London of 1898. Suspected in a case involving theft, fraud and double-crossing, Sherlock Holmes will undergo a descent into hell in what will doubtlessly become one of his most thrilling cases yet. You will find all the elements of a grand investigation: examine crime scenes, find the clues, follow the trails, interrogate suspects and unveil the mystery behind a great adventure, led by a breath-taking story full of twists! Lead Holmes’ darkest investigation: examine crime scenes, find clues, interrogate suspects Discover Sherlock Holmes’ dark side in a breath-taking story full of twists and turns Uncover new leads and clues as you explore richly detailed places all across London