Re: Elder Scrolls Online
It's online-only, and you no option but to play on assorted servers with a few dozen others online. You can play without teaming up, but not in your own private world. Also, they've straight-up stated that going it alone is much, much harder than playing as part of a group, probably both because they've got monsters in the game that will require groups to take down, and because players WILL be coming to kill you and take all your stuff. There is no single-player campaign.
I guess you can at least ensure you and your friends play together when you're all online at the same time.
Apparently, your stuff is only there while you're online, but you still have to deal with a world where players can find nuke silos and actually drop a nuke right onto the base you've spent the last month building, so have fun with that.
Doctor House was entirely too much of a 'people person'.