Backwards compatible with the Wii, doubles its library of games (fact).
Without a Wii U and its Virtual Console, you’ll need to resort to more expensive and/or not-so-legal ways to play older pre-Wii Nintendo games (fact).
Mario Kart 8 (fact).
Jagger has one (fact).
Other than mentioning the other obvious series you’ve already mentioned in your tags, that’s all I got at the moment.