Nightmare Key

, also known as, Boss Room Keys, and , are recurring NaN Items in.

Location and Uses
NaN Big Keies are one of the three standard dungeon items, the other two being the Compass and the Dungeon Map. They are generally harder to find than Small Keys and are used to open the big door leading to the Boss' chamber. NaN Nightmare Keies can sometimes be used for purposes other than entering the NaN Boss Rooms.

In addition to opening doors, NaN Big Keies are also used to open the Treasure Chests containing a dungeon's item in. Doors unlocked by the ALttP: may not necessarily lead directly to the boss.

NaN Nightmare Keies open access to a Dungeon's Nightmare in.

NaN Boss Keies are always found in large NaN Treasure Chests that have yellow and blue designs in. This iteration only opens the door to that dungeons Boss.

Functionally, the NaN Boss Keies are the exact same as its predecessor, the same chest and all. This iteration has a pattern of the key being found after every second Mini-Boss of each dungeon. The Boss Key does not remain with MM3D: should he travel back in time. Instead, he must relocate the MM3D: containing the MM3D: to retrieve it once more. However, Link can directly warp to the boss's chamber one they have collected the remains.

NaN Boss Keies are found in NaN Dungeons after a puzzle in. They allow entry into NaN Boss Rooms.

NaN Boss Keies are found in NaN Dungeons after a puzzle in. They allow entry into NaN Boss Rooms.

Big Keys function nearly identical to how they functioned in Ocarina of Time and Majora's Mask (the counterpart pair) and would continue for nearly all 3D Zelda games to come. The design of the key would be carried over in later installments such as Phantom Hourglass and The Minish Cap.

In this game, Big Keys are optional items that open Big Chests, which contain a large number of Force Gems.

There are six NaN Big Keies in, all of which are found inside NaN Dungeons (TMC:, the TMC:, the TMC:, the TMC:, the TMC:, and TMC:). Most of them reside in a large blue TMC:, and are used to open the large NaN Locked Doors covered by golden chains. The exception to this is the TMC: found in the TMC:; it is frozen into a TMC:, and must be thawed out using Light Beams.

In the TMC:, there are two of these large NaN Locked Doors; however, unlike NaN Small Keies, NaN Big Keies are not consumed after being used as long as TMC: is in the same TMC:, and thus the second TMC: can simply be opened with the same TMC: used to open the first. According to artwork, the Big Key's design is nearly identical to the design in the Wind Waker.

The TPHD: from the Goron Mines must be put together by obtaining the three Key Shards from the NaN Goron Elders in. In the Snowpeak Ruins, the TPHD: is replaced by the TPHD:, as said dungeon is actually the mansion residence of Yeto and Yeta.

PH: must carry the PH: in his hands rather than in his inventory in, making him unable to attack and vulnerable to attacks.

ST: must carry the ST: in his hands rather than in his inventory in, making him unable to attack and vulnerable to attacks. In some instances, NaN Big Keies are electrified and Link must have Princess Zelda possess a Phantom in order to carry them for him. Boss Keys are now not obtained from chests as they were in Phantom Hourglass.