I want something that doesn't rely on jumpscares, and that has puzzles, exploration and more in general something to do as opposed to the corridor walk simulators.

Yume Nikki (Remake coming soon)

Ib

Hide The link provided it's a webarchive copy since the original page links are dead

Faith

Desert Nightmare

Lurking

OSU An online rhythm game, It can get very hardcore but the difficulty can be customized and you can add beatmaps (and the standards are not that low)

FPS

Marathon Trilogy

Hades 2 Despite the name it's not a sequel to anything

Estranged: Act I

Estranged: Act II

(Both standalone, but Act II is in early access)

Paranoia

Paranoia 2

(Both standalone and inspired by F.E.A.R.)

Wolfenstein: Enemy Territory (Multiplayer)

ARENA SHOOTERS

Cube 2: Sauerbraten Runs on Mac OSX, Linux and Windows, and it also has a SP campaing

Soldat

PLATFORM

N Addicting and with a good physics

RACING

TrackMania Nations Forever Perfect for low end pc, you can also build tracks and add new cars

Dead links

Shapeshifter biker dead link, new link

Mubbly tower dead link, new link

That's a fair way to camp

This would be a better soundtrack for Doom 4

@horgen: yeah well it's on vevo, it must be catchy

Vektor - Recharging the Void Space themed progressive thrash metal song, aggressive and dreamy at the same time

Nile - Unas Slayer Of The Gods Egyptian themed brutal technical metal song, brutal and disquieting

Dozen of killer riffs, interesting structures, intense goosebumps.

Check out the complete albums if you like metal ;)

obviously both are a 10/10

@White_Wolf_Kiba: Stop being a casual gamer, videogames are also meant to give a challenge.

Penumbra games are extremely immersive

You are a casual gamer, that's it.