I was just reminded that Freaks! exists, and while I'm pretty sure I've mentioned it on these forums before, it doesn't appear to have been in this thread, so have it again.
Weird proto-FPS that's very akin to Catacomb Abyss/Armageddon/Apocalypse in the vibe it has, but in VGA, you have a gun instead of fireballs (excuse me, Magick Missiles), and the engine has a weird quirk where, although you have free movement instead of being tile-locked like in a Dungeon Master style game, you can only rotate at 90-degree angles. I suspect the devs just couldn't figure out how to program the renderer to handle arbitrary player angles, threw their hands up and said "good enough".
Would I call it a good game? Probably not, even the Catacomb A* games might be better and those are primitive and rough in and of themselves, but I would say it's kind of interesting and if Catacomb turns you on it might be something of a something-similar fix for you. It's also free now.
https://triptico.com/software/freaks.html