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 $29.8K — a different platform, not this one.

The Will of Arthur Flabbington

Bad news: your uncle died, and left you nothing in his will.  Good news: the will mentions a mysterious treasure.  Bad news: only two people can recover the treasure, and you're not one of them.  Good news: these two people don't want to recover it.  Bad news: they hate each other and won't collaborate.  It seems like you have to move on and forget about the inheritance. Unless you're Jack Flabbington, and resort to a psychic to contact your uncle's spirit. It will be easy, right? It's not like you'll end up bound to a random ghost until you find the treasure yourself, right?  The Will of Arthur Flabbington is a comedy point-and-click adventure game where you're desperately trying to find your uncle's lost treasure with the help of a reluctant sidekick. Will you be able to set aside your differences and collaborate towards your common goal?  Main features:    Click stuff to interact!    Jokes!    Puzzles that are hard but logical, to make you feel smart when you solve them!   A modern look-first-then-interact interface so you won't miss any juicy hints!    Possess other NPCs*!    Toilet humor!    A state-of-the-art 320x180 resolution, for the hardcore pixel lovers!    More pizzas than you'll ever dream of! *certain restrictions may apply.