Posted February 21, 2022
tinysalamander: Midnight Protocol is missing Linux version, which exists on Steam.
GOG page says "Note: Linux version will be available soon" since "forever".
It seems it had a Linux build already, according to the system requirements in the oldest snapshot of the game's store page on Internet Archive, but it disappeared some time in the following month. GOG page says "Note: Linux version will be available soon" since "forever".
Snapshot links for context:
[oldest one] https://web.archive.org/web/20211007024955/https://www.gog.com/game/midnight_protocol
[first that says "Linux coming soon"] https://web.archive.org/web/20211013154817/https://www.gog.com/game/midnight_protocol
(copy the links instead of clicking on them since the forum software doesn't like IA links)
My bet is that compiling the game with GOG's API broke the Linux build, similarly to what's been reported by the devs of Turnip Boy Commits Tax Evasion.