It's a good fun "little" game. Reason I say "Little" is the amount of stuff to build is relatively small but it's a HUGE surface area I'm talking 5Km plus walking distance one way. (I stopped flying the spacecraft that was built and turned around) there is space and space stations, but they are not done yet.
Thankfully I missed all the really early stuff. I don't need another sit and wait while they build it game. The latest version seems to have quite a bit of content. I am new to the game so I haven't made it very far but a lot of the videos out make it look promising.