tap3ah: Quantum Break
should be on the list. It's part of Remedy universe
like Control and Alan Wake games.
Nah, that's a little bit too stretching it.
Co-founder of id Software and designer of the OG Doom games released a new map for Doom II: https://romero.com/shop/p/onehumanity https://twitter.com/romero/status/1499172470330437633
Would that count, since apparently he doesn't work with id Software since the late 90's?
Hm, will have to think about this one. It is essentially just a paid mod after all, despite the author - but at the same time I do have other fan-made games on the list (which I turn in maybe should clean out).
tap3ah: Warhammer 40,000: Battle Sister
has just been released on Steam, but not on GOG.
zeffyr: Gary Grigsby's War in the East 2
has been released a few months ago.
Thank you! Added:
Warhammer 40,000: Battle Sister
Gary Grigsby's War in the East 2