windowscentral[.]com/no-mans-sky-launches-pc-first-patch-already-released
Releasing earlier this week for the PS4, there were a few pre-orders available that discounted the $60 MSRP -- it makes sense to wait for the price to drop in this case to give them a chance to iron out widespread performance issues... guess that's one of the risks when you don't have a large beta program. Sony was supporting the small Indie game dev, so maybe the no-beta thing was their call? Whatever... some early users were reporting big problems with some pretty serious gaming hardware.
There have been loads of gamers watching [& waiting for] this one for the past couple few years. Rather than artist created scenes, backgrounds, maps, & characters, what you see in NMS is pretty much all created by your hardware at run time. You look to the right, & the software determines your field of view, what should be there, & draws it. Taking this procedural approach means the limits are the math they can code into it -- the environment is so huge it's hard to comprehend except in some abstract sense I think. The same absence of limits apparently goes for the amount of detail, though there hardware limitations apply -- a later version will show more when using the new, more powerful Play Station [once it's released].
I'd think because the environment is so huge, there's no player to player interaction AFAIK, but just single player exploration & sort of optional tasks. Some journalists have been playing for a little while now, & you can read their impressions & reports online. With over 5 mill hits using Google, it's not hard to find info.