If you go to Nintendo eshop, search up tomodachi life and you'll see a Tomodachi life icon with the word "update" attached to the bottom-right of the games icon. This update makes the game run smoother (like a HDTV). All updates from Nintendo Eshop will apply to the game, regardless if downloaded or on a gamecard. But note, if you put the game card in a system that does not have the update and