Ocarina of Time 3D has "Boss Challenge Mode".

*sigh* more OoT 3D Newz!
Anyways, a while back Iwata said: "Ocarina of Time 3D will be crammed with new and interesting things". The first one announced was the "Master Quest", which is (as in the original Legend Of Zelda on the NES) a more difficult version of the game, available after completing the game normally. But now there is a new mode announced called: "Boss Challenge Mode". And this is basicallly what it says on the tin. If you for some reason don't understand, Boss Challenge Mode allows you “to face any of the previous Bosses they have defeated once again, or, the option to face and confront them one-by-one, all in a continuous battle.” And you can only unlock this mode once you reach a certain point in the game. Although we don't know what this point in the game is, it sounds like a great little mode and I can't wait to play this game!