Codes cheats for Zelda no Densetsu - Majora no Kamen

Zelda no Densetsu - Majora no Kamen - Game cheats, tips and tricks for Nintendo64

Advance time twelve hours:
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Play the following notes on the Ocarina: C-Right(2), A(2), C-Down(2) to travel to
the next time it will be 6:00. For example, if it is currently 6:00 P.M. on the
first day and you play the song, you will go to 6:00 A.M. on the second day
(twelve hours forward). However, if you play the song at 4:00 A.M. on the first
day, you will go to 6:00 A.M. on the first day (2 hours forward). Slower time
with normal movement rate
Play the following notes on the Ocarina (The Song Of Time backwards):
C-Down, A, C-Right, C-Down, A, C-Right. Play the song again to return to normal.

Heal signs:
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Destroy a sign, then play the following notes on the Ocarina (The Song Of Healing):
C-Left, C-Right, C-Down.