Hello, I know you will always have to be online to play D3, however, I was wondering if in the single player campaign if you could play it completely solo-aka, no auction house, no other players, ever. I have searched on google and elsewhere, however I have not found anything of confirmation that I would like.
If you want to play with other people, you actually have to choose to do it. If you're just playing solo; there is no way for anyone else to join you without you choosing/allowing it. This game can be played 100% as a single player without interacting with other people if you like.