Great Key

Great Keys are special Keys in.

Location and Uses
The Great Keys are required to enter Vaati's Palace. They can also be used to unlock bonus content in. Great Keys can be obtained from the Great Fairies after completing a level with a certain number of Rupees. The Great Fairies will dub the Links every time they get a key, starting from "little eggs" to "brave heros" and finally "the greatest of heroes". Great Keys come in three types: Silver, Golden and Hero.

The Links can initially obtain the Silver Keys after beating each stage with a minimum of 1,000 Rupees. After defeating Vaati for the first time, they can obtain the Golden Keys by completing each stage with a minimum of 3,000 Rupees. Once they defeat Vaati a second time, they can obtain the Hero's Keys with a minimum of 5,000 Rupees. Each set of key unlocks a different ending.

Trivia

 * Instead of portraying the Keys with their in-game hierarchy of Silver, Golden, and Hero, the official art of the keys portrays them as Bronze, Silver, and Golden.