Recommend unpopular games and their singular take at something other more popular games failed at

Ill begin with a fav of mine as an example:

Elite Dangerous, proving not that mainstream of a game, nails the aspect of really depicting how vast our galaxy is, specially regarding aspects such as distances between systems that other games tend to overlook or shorten in order to favour gameplay, or deliberately alter orbits between planets and moons in order to provide more sci-fi stereotype vistas.

We have more mainstream games like No mans sky or Star citizen, yet none of them to me succeed at depicting the actual pilgrimage it is getting to Sag A* from our earth, proving E:D also has its fictional takes at FTL travelling, but then again, no other game to me makes you learn the actual size and emptyness of the universe like E:D does.

Hope you fellas get my point. Gotta leave the post in here while I Zzz, hope as I wake up I can get to review tons of gems in here and compile a cool list for us folks!

tl;dr: Defend here why your not high numbers game has the charm and why everyone is sleeping on it!