Every single thing in destiny besides Orbit have some kind of match making system. starting up Vault of glass puts you in a patrol zone where anyone could show up. That's what the massive part is. Halo, forza ... any game that has a multiplayer isn't an mmo because that's only a fraction of the game Just because you think of World of Warcraft when you think about an mmo doesn't mean that that's what an mmo has to be.