One of more significant extras included with The Legend of Zelda: Ocarina of Time 3D is the Master Quest, a harder version of Ocarina that was last available as a pre-order bonus for The Legend of Zelda: The Wind Waker. Not willing to pass up a chance to make Master Quest even harder, Nintendo is mirroring the land of Hyrule in Master Quest to disorient players who know dungeon layouts like the back of their hand.
Ocarina of Time 3D also features an unlockable Boss Challenge mode for rematches against boss characters. You can fight each boss one at a time or fight them all back-to-back in the manner of a boss rush. Expert players may want to attempt beating every boss with just three hearts.
Can't remember how to solve one of Ocarina's puzzles or just plain stumped with a challenge? You can bring up Ocarina of Time 3D's hint videos for a helpful tip and keep on going with the adventure.