Ditto with what Bib4 suggested. The Vanishing of Ethan Carter was going to be the first one I suggested. I love that game. Very, very beautiful with some problem solving/investigation and a very interesting story that keeps you guessing at whether its real or supernatural. I can't recommend it enough and its one of the finest looking, handcrafted environments I've ever seen in a game.

Sherlock Holmes: Crimes and Punishments A nice looking game with unique areas to explore and search for clues. An investigative, adventure game that is laid back and a very enjoyable game that I like to relax to. It even has sort of an interrogation mini-game and problem solving and I find its one of those titles that I can really get immersed in.

The Long Dark Its Early Access but it is excellent. The game is designed to have a sandbox mode(which is very enjoyable) and a soon to come single player story campaign.(should be released very soon) The art style and estetic is gorgeous. Simple but beautiful. It is a survival game but its not like those other grindy ones. This one is about the atmosphere and immersion. The surviving game play in this one is FUN first and foremost. The feelings of solitude and the unknown are almost surreal once you really get into it.

Homesick

INSIDE Another wow one I just finished. Its a platformer but there is no combat, only puzzles or brain teasers and this game is all about the atmosphere. The art style again is superb and the only way I know how to describe the aesthetic and animations is soft fluidity. Its unreal how it all works and play out. Truly surreal more than any I've listed so far. Its a masterfully crafted piece of software with visuals and audio working in beautiful and foreboding concert with one another.

Soma Wow. I love this game and yet at times it scares the crap of me too. There is no combat. Its experiential and a story that drives you to uncover the mystery of it all. The environment and atmosphere is awesome and it takes place at an under water base.

King's Quest

The Last Door

Speaking of interrogation, L.A. Noir is a gem of a game. Its not like the other Rockstar games where its all action. This game is all about late 1940s immersion into a Hollywood-esk noir story and world based on investigating crimes. Searching for clues and correctly questioning and interrogating suspects is the core game play with only a very little combat sprinkled in here and there. I'm still learning since 2010 on how the interrogation mechanism works. You really have to think and pay attention to detail. Walking around a fully period correct 1940s/50s L.A. in beautiful cars following a very well crafted narrative with dozens of different stories is excellent. I really wish developers would continue to explore these Dragnet type of games.

Kholat To be honest I have not finished it yet and have always had performance issues with it that has left me more than once annoyed but its such a great setting and interesting theme based off of the true Dyatlov Pass incident albeit with a heavy, supernatural emphasis.

Medusa's Labyrinth is free

ABZU Nice to relax to and a beautiful lite game. Controller strongly recommended though.


These I do not own yet but really want. They are currently on my wishlist and few aren't released yet:

Routine
Conarium
Obduction
The Solus Project
Adrift
Kona
The Cursed Forest
Sherlock Holmes: The Devil's Daughter
Morningstar: Descent to Deadrock
The Witness
Prominence
Shelter 1&2
Ether One
Quest for Infamy
NaissanceE
The Talos Principle
J.U.L.I.A.: Among the Stars
Syberia 3
35MM
event[0]
The Turing Test
What Remains of Edith Finch
The Town of Light
The Eyes of Ara
Ira
Old Man's Journey
The Fidelio Incident
Aporia: Beyond the Valley
Quern
Stories Untold
Aviary Attorney
Far-Out
Layers of Fear
POLLEN
Agatha Christie - The ABC Murders
Cradle
Stairs
Vernon's Legacy
Through the Woods
Sonder. Episode ONE
Ghost of a Tale
Left Alone
Everybody's Gone to the Rapture
Little Nightmares
The Order of the Thorne - The King's Challenge
The Park
Lethe - Episode One
Dead Secret
Among the Sleep
CAT Interstellar - I actually have this in early access but haven't played in awhile. It was pretty good day one and its been updated since then.

Firewatch is incredible.

I cannot recommend Everybody's Gone to the Rapture enough mate......

I'm willing to go into crazy street preacher mode. For you, my friends, for you.

Seriously. This game is the crazy love child of Crusader: No Remorse, Mechwarrior, and Syndicate, directed by John Carpenter.
96% Overwhelmingly positive reviews. This game deserves your attention, for your sake.

https://www.gog.com/game/brigador

[... the Steam summer sale in a couple of weeks (usually around 4th of July)

Thanks, it's been on my wishlist for a while, plan it to pick it up in the Steam summer sale in a couple of weeks (usually around 4th of July)