Originally posted by RAIDMissionary:

Not sure if I am wording this correctly. Can you play single player, have bases etc, then have friends join you or join friends and you have the same world/progress, base, or is it starting over? I'm not familiar with mmo games much

you can. and it's fairly simple. when you're creating the game just press a button "start server" and after it's loaded invite your friends to join.

but this will work only while you're playing. if you want a world that is accessible 24\7 - you need to instal valheim dedicated setver. it's in steam's tools