>>1 would be nice to also have a link to the website to make things easier for more info,
but from what I have "seen" it's just like flying about in space and walking on planets nothing else.
I am guessing you got the number from - https://en.wikipedia.org/wiki/No_Man%27s_Sky
for the moment I will stick with * Elite Dangerous * which is a playable game that also is a work in progress, as it has a good few thing to be add :D