Euro Truck Simulator
Euro Truck Simulator 2 gives you the chance to become a real truck driver from the comfort of your home
Desert Golfing
Due to it's minimalism it's very relaxing, and there's not much going on to distract you. I've used this game to get myself in to a meditative state.
Meadow
Players can only talk using predefined "symbols" and can either wander the meadows alone or team up to collect flowers, explore the map, unlock obelisks.
Shelter 1 / 2, Paws
Shelter is a series of games about the circle of life, each depicting the view of a different animal.
Hellblade
While the game itself is challenging, overcoming those challenges in the game gives a sense of real achievement and control over one's mental health.
Proteus
Exploring a randomly generated island transitioning through seasons, you have to walk around and take in the sights of this pastel coloured world, all the while listening to claming relaxing
Starcraft
It may not seem like it, what with all the futuristic things, but I find immersing into a role this game pretty easy, and the fact that it gives me
Metal Gear Solid V: The Phantom Pain
Open world stealth shooter, can be fairly relaxing most of the time, but not all the time. A game I can really get lost in/immersed and play for hours on
Tearaway
Cute, creative, super easy to get into.