I Wish Nintendo had incorporated a simpler idea of this when the 3DS first launched. Make a simpler more age-neutral looking wristband that syncs with your 3DS for any an all games, and then when the game would have any kind of force feedback/rumble, it would vibrate your bracelet (or bracelets if you put one on each wrist). Its a shame that the DS/lite were capable of rumble for games that utilized the GBA port for the rumble expansion, or even certain gameboy color games (like Pokemon pinball) that were physically larger and had built in rumbler. Yet here we are with the 3DS and not a single instance of rumble until now with the Z-Ring, but they're only for the new Pokemon games, it seems like if something like this can be done with one game, it likely could have been done for any and all 3DS games if they wanted to, and by doing it the bracelet way, you avoid any extra bulk and weight within the actual 3DS, so I do think it is a good idea overall. It's just that the Z-Rings look too kiddie, and they're restricted to the 7th gen of Pokemon, it'd have been nice to look like a simple bracelet that anyone would be ok with wearing, and it could work with much more games.