Someone already recommended the STALKER series and you said it didn't stand out but I'm going to re-recommend (specifically) STALKER: Call of Pripyat because it's a thousand times better than the two previous games. There are a lot of mods out there that bring it up to par with modern games too especially if you dig the hardcore survival genre. It'll probably be a new experience if anything, no real other games out there quite like it
Other than that I guess I'm just gonna take a stab in the dark lol
- Distance, It's a pretty good racing game with randomizable map features and a level editor
- Middle Earth: Shadow of Mordor, don't actually have to know anything about Lord of the Rings to enjoy this game but it's a bonus if you do. Ridiculously fun/addicting combat
- Mad Max, Similar gameplay to Middle Earth, but harder, and very atmospheric. Also you get a car that you can upgrade over time and beat the stuff out of other cars with which is fun
- Insurgency, Hardcore multiplayer shooter. Intense addicting gameplay but very difficult to learn how to play when the community is League-tier toxic to new players
- The Forest, I have a surprising amount of time on this game. Pretty loving scary/spooky game. You can build cool wood bases too. They even added a creative mode recently if you just want to build and don't want to fight off cannibals constantly.
- Warhammer 40,000 Space Marine, This game is fun even if you don't know richard about WH40K because you get to swing around a big hammer and kill demons
- Blood and Bacon, Terrible game don't get it (get it)
- Penumbra: Black Plauge, Second game in the series, incredibly atmospheric horror game
- Depth, Actually an extraordinarily good and unique game in my opinion.
