Ura Zelda, or "Another Zelda," was a notorious vaporware project that never saw the light of day. When Zelda 64 was moved to the cartridge format, work began on a Zelda Gaiden for the 64DD. Eventually, however, Zelda Gaiden was split into two games: Majora's Mask on the cartridge format and Ura Zelda on the 64DD. While Majora's Mask used a revamped game engine and featured an all-new dungeon set and world, Ura Zelda was supposed to offer new goals and quests within the world and dungeons of Zelda 64. Its focus was to be on dungeons and temples--the "underground" of Zelda's world--and it would have possibly supported the Game Boy Camera, letting you put your face onto one of Link's masks. Unfortunately, information on the game went from scarce to nonexistent, and it was eventually learned that the game had been canned.

Fortunately, though, Ura Zelda finally saw release some years later when it appeared on a bonus disc given to players who preordered The Wind Waker. Redubbed the "Master Quest" version of Ocarina of Time, the game featured remixed dungeons with new puzzles and tougher enemies. Sadly, the writable features originally planned for Ura Zelda had to be removed.