I have been working on a realistic scale space simulator (working title, Space Freighters) that I like to describe as a "truck simulator in space." [0] The focus is currently in creating a simulator with realistic spaceflight physics (I am an aerospace engineer by day), that also allows you to bend some rules with options for FTL travel. I am striving for a calm gameplay similar to the truck simulator franchises in which the player can deliver cargo and take time to admire the universe around them.
The project is still young, and I do not have a lot to share at the moment, but if you are interested, you can follow along on the subreddit below!