V Rising has the option of setting up a local game. I made the mistake of starting a game with default settings and i couldn't play with the internet connection gone. Had to start anew with the correct selection.

In a similar vein are Conan Exiles and possibly Dune Awakening (haven't it).

What they lack is more neutral or helpful npcs. There's some merchants and the enslaved pawns, but progression is more automatic through menus rather than quest givers.