Видно немного, но есть.

Grim Dawn, Onmyoji, Warhammer 40k: Inquisitor - Martyr, not exactly mmos in a traditional way, but still.

Quite an easy answer. I prefer play solo, but there is only so much single player games (that i like that is) and when you complete the game and waiting for some new release, mmo is a perfect place for doing so.