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 $856.4K — a different platform, not this one.

The Book of Unwritten Tales

A war is brewing in Aventásia. During the eternal struggle of the Alliance of Free Races against the Army of Shadows, an aged gremlin archaeologist Mortimer MacGuffin discovers the secret repository that houses a legendary artifact! Knowing that this ancient treasure could turn the tide of war, the Army of Shadows sends their best agents to seize it. At the same time four unlikely heroes from the Alliance are drawn into the crisis: a cute gnome Wilbur, a stunningly attractive wood elf princess Ivo, and a brash pirate Nate with his furry companion, the mysterious Critter. The Book of Unwritten Tales is a classic point-and-click adventure game with a cornucopia of humorous references. Whether it gently lampoons a particularly popular MMO or the stereotypical fantasy conventions, it’s sure to put a knowing smile on the face of even the most hardened adventurer! If you're looking for a comedic relief from all the super-serious plots of modern games, this beautifully-presented point-and-click adventure will be perfect for you. Travel through a beautifully presented world that is a twisted image of almost every popular fantasy land you’ve visited in games, movies, and books. Help a pack of hapless heroes to solve over 150 mind-boggling puzzles and discover more than 300 items that can be used and combined. Meet a cast of crazy characters - from two-headed ogres and vegetarian dragons to good-natured zombies.