Favorite Space Flight Simulator(s) or game(s)?

[Republic of Texas]

Hey everyone! New here, wanna know what simulator(s)/game(s) y'all recommend for someone who likes realistic space games/simulators! Thanks!
~ Republic of Tex

[tdemko]

Kerbal Space Program continues to keep my interest. Can be played, and played with, at many levels, including an open sandbox. Physics is just real enough, not so real as to generate a lot of waiting for something to happen, but gravity and orbital dynamics work in a semi-realistic fashion.

https://kerbalspaceprogram.com/en/

[mike robel]

Board Games.  Buzz Aldrins Race to Space and Moon Shot (A card game)

[ZachS09]

#1 favorite is Kerbal Space Program.

#2 favorite is Orbiter Simulator; both the 2010 and 2016 versions.

[Chilly]

I recently found a neat little tablet-friendly game that works in Android and iOS. It's called...wait for it..."Space Simulator." I reviewed it on Amazon as less of a time sink than KSP and easier to learn than Orbiter, so what's not to like?
Good graphics, good physics, good tutorials with real spacecraft (Shuttle, Gemini, Apollo) and fictional (2001 Discovery & Orion shuttle, and SLS/Orion ).
Bonus: a primary control method is the Apollo DSKY.

[Oli]

Star Citizen seems to have the best tech out there, but I wouldn't recommend buying it yet.

[Orbiter]

Orbiter 2016 & SpaceEngine