For start, here's the list of titles I know:
The Lone Survivor
Doom 3 (Actually, Doom 1 and 2 also fit, I guess?)
Dead space 1, 2
Below is the most underrated game i have seen on my life
super metroid makes you very isolated in a dangerous planet
I also don't get the reason, why isn't this game more popular? I heard it was brutal as fuck when it had mandatory permadeath + crafting, but now with the Explore update the game's really become much more friendly while still being an amazing adventure experience.
Also, I would add Darkwood too.
How did the make it?
Yeah, no wonder, the guy made a game that looks very modern in a game engine that is like 30 years old lol
That's pretty cool. Does it work with conventional WADs?
no idea, dont even know what WADs are, you can the game comes like an standalone
This + Hotaru no Nikki.
Now that you said, I also remembered one of Harry Potter games where you run in the castle mostly alone. Even though there were npc, the game still invoked weird feeling of isolation.
remember which one?
It's the Philosopher's stone 2001.