I think at least everyone should play enough so they can finish the game. If you look up what you need to do, you can complete it in under an hour.
The surprise reveal at the end is worth talking about, so people should try to see it if they can.
Has everyone at least played enough to see the story develope which I will reference below
Some mysterious external space force is causing the stars in the universe to go super nova, killing all life in the solar systems. It is detected that soon the human space colony start will explode, killing all humanity.
It all seems to be tied up w/ the mysterious ancient race who have left temples around the universe, almost always w/ a few tons of fuel for your ship near by.