Hello Games' co-founder, Sean Murray, spoke with GameSpot explaining that the incredibly large No Man's Sky will still feature a "traditional" multiplayer component.
No Man's Sky multiplayer won't act like traditional MMOs, but it doesn't meant it won't feature large scale fights either. Murray explains: "This is not a game about forming a clan or allegiances, right? But it has some MMO-esque mechanics, I guess". With the galaxy being virtually unlimited in size, won't it be hard finding other players?
Murray continued: "There is this thing, which I'm not going to talk about now, that is a plan for multiplayer and for people to have a more traditional multiplayer experience within the game. And that's something that we'll deal with further down the line that is exciting. But that is not what's core to the game right now".