It actually all sounds really full fledged.
Square Enix promised that they would be working on a multiplayer expansion for Final Fantasy 15, and it’s almost here now. The expansion will be called Comrades, and Square Enix will be holding a worldwide beta test for it from August 3-8. The beta will be closed, but it will be available to all Season Pass holders.
You’ll be able to make a custom avatar (later updates will let you play as Ignis, Noctis, Gladiolus, and Prompto), customize them, have a base city, get access to an expanded arsenal of weapons, take on quests, and more. It actually sounds really full fledged, as opposed to something just tacked on like many had feared or assumed.
Final Fantasy 15 is available on Xbox One and PlayStation 4; the multiplayer test will be made available on both systems as well, with a client for the beta being made available to download on August 2 on both systems’ respective online stores.