S.Peelman on 09 June 2014
Wii Sports was revolutionary, and any game of selling consoles like that deserves all the credit, but I'd say speaking in terms of quality, Wii Sports Resort is the best of the Wii-series games. I haven't played all of them, mind, just Wii Sports/ Resort, Wii Play and Wii Fit Plus. Those latter two aren't real games in the traditional sense to me though.
