The premise of KSP is this: You have a bunch of bits to build a rocket. From there, you can perform orbital maneuvers, visit the mun (KSP's version of the moon) or send a probe into deep space. Normally, this kind of game wouldn't pique my interest this hard... but the feeling you get when you get into a successful orbit just can't be beat. Seeing your rocket stage and surge through the atmosphere conjures feelings that the first aerospace...

I like the concept of a space program sim of sorts.
Does that crowd source space station exist because the game has some sort of online functionality that allows people to co-exist in some fashion?
It's a communal save file. I have a feeling some multiplayerness may be in the works in the future, but for now it's "old school."
Thats a good way to do it without the online portion. After we had our CG Terraria server, I handed out the save to everyone from our world so people could have a record of it.