Hello Games - No Man's Sky

And one that probably few here have heard of: Lapioware - Diesel Railcar Simulator

Mentioning that one because it's a one man show. Made by a man who felt nostalgic for the diesel railcars & landscapes of 1960s Britain. So he ended up making one of the most realistic train sims.

Some more to add—

- Revolution Software (Broken Sword series)

- Fireproof Games (The Room series)

- Jagex (RuneScape)

- Core Design (Tomb Raider)

- Dovetail Games (Rail and Train Simulator*)

Frontier, Cloud Imperium Games, Free Radical / Crytek UK / Dambuster, Ninja Theory, Playground Games