Originally posted by ling.speed:

Game works completely offline no problem (as long as you disable cloud saves).
As for fun, definitely YES but its a different experiance. Game was made for co-op, and its most fun that way. Solo is kind of a solitary zen experiance. Its a little harder but far from unplayable. There is no story, almost no-one to interact with, but its a fun challenge.

My own anecdotal experience: there isn't any difference between the single-player and multi-player experiences, except that in single-player you have to get all your resources by yourself, and you always have all the aggro because there aren't any other players to swap off with.

That being said, you can always drag the fight through some mobs that are hostile to the faction of the mob(s) you're fighting, and watch the chaos ensue.

I'm always amused when two or more groups that want desperately to kill me stop to take potshots at each other; skelly-mans don't last long against graydwarves, but it makes me chuckle every time...