Also lets you link Nintendo network accounts between Wii U and 3DS. Only one 3DS per account. For those of you who don't know Miiverse is Nintendo's social network type thing. Split into separate communities for each game. So if your having questions on a certain part in Pokemon Y you can go to the Pokemon X & Y group and ask for help or to trade etc. You can also usually find some awesome drawings by people. [url=http://www.vg247.com/2013/12/10/3ds-eshop-having-problems-after-miiverse-update/]POSSIBLE GLITCH[/url]: Supposedly for some people the update is glitching their eshop. Hasn't affected me at all so can't comment.