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 $27.9K — a different platform, not this one.

Forgotten Realms: Demon Stone

Three adventurers that have met by chance find the Demon Stone, an ancient prison, just as it breaks before their eyes. The contained evil is unleashed and the two wicked spirits of a Githyanki general and a Slaad lord once again threaten the world. You take control of three heroes: Rannek the fighter, Illius the sorcerer, and Zhai the rogue. Each of them has his or her own unique set of spells. Switch between them any time you want, using their abilities to your advantage. As you progress through the game, your heroes gain levels, learn new skills and acquire powerful items. You will need them all to have even the slightest chance of defeating the ancient evil you stand against. A new version of the build, prepared by SNEG and improved for modern operating systems, is available on the "Alternate Version" branch in GOG Galaxy, or via downloadable installers. Go HERE for an explanation of how to access beta channels in GOG Galaxy. Changelog General Fixed multiple slowdowns in game and during startup Fixed broken in game clock Framerate locked to 30 FPS as per game design Fixed game losing control during movie playback Game can now run standalone, configuration launcher is no longer needed to play the game Graphics 3D and 2D properly scale to any aspect ratio Optimized shadows performance 2D rendering now uses linear filtering Added borderless and windowed display modes Borderless is the default display mode Input Removed DirectInput controller support Added full support for any XInput compatible controller Controller triggers now work Pad mapping changed to match PS2 Start pauses the game instead of right analog stick Controller vibrations implemented Hotplugging is supported Sound Implemented sound volume control Implemented music volume control Game Sound & music volume can be adjusted in the pause menu Vibrations can be toggled on or off in the pause menu Movelist inputs will adjust to last input device used New PC settings menu Tutorial tips will automatically adjust inputs to last input device used PLEASE NOTE Installing this version via Galaxy or offline installer may overwrite your original game files. Backup your saves as a precaution.