Some GOG games provide Linux and macOS versions of games, but put them in the GAME GOODIES section.
That is, GOG do not officially support those additional versions.

Linux and macOS
BASEBALL STARS 2
METAL SLUG
METAL SLUG 2
METAL SLUG 3
METAL SLUG X
SHOCK TROOPERS
THE LAST BLADE
TWINKLE STAR SPRITES

Linux only
(null)

macOS only
The 7th Guest (Original)

Windows only
Call of Cthulhu: Prisoner of Ice (UK Version)
Falcon 4.0

Falcon 4.0 is indeed provided as a "bonus". The main interest of doing so is to make it available to those needing an acess to the original executable so as to setup Falcon BMS 4.33 ( or 4.32 for that matter)