Yeah, I’m around 40 and I played these games as they were coming out back in the 1990s. I call them either “FPS” or “Retro FPS”…
People born in the 1940s/50s never played them much. Although my dad did play Wolfenstein3D and Doom some, but that was not common for people in his age group.
If you happen to like adventure and puzzle solving games, The Witness is 81% off and realMyst: Masterpiece Edition is 60% off.
I haven’t bought anything yet, but I noticed that retro kart racer Super Indie Karts is 70% off.
Heroes of Might and Magic II, using the fheroes2 recreation engine.
https://github.com/ihhub/fheroes2