If Link is wearing the Garo's Mask, the Gibdo Mask, or the Captain's Hat in the presence of Redeads, they will start dancing.

In the Astral Observatory, there is a picture of a dolphin hidden under a small pot. It's thought to be a reference to Dolphin, the Gamecube's code name at the time.

The development for Majora's Mask started out of a lack of enthusiasm to work on the unreleased expansion for Ocarina of Time for the Nintendo 64 Disc Drive, dubbed "Ura Zelda". Eiji Aonuma protested the expansion, so Shigeru Miyamoto challenged him to make a sequel for the game within 1 year, in exchange, they would no longer have to make Ura Zelda.

In the game, there are unused cutscenes that show the Great Fairy training Link for his new abilities instead of just magically giving them to him.

Although Majora's Mask is a direct sequel to Ocarina of Time, there was an officially licensed novel released set shortly after the events of Ocarina of Time. "Link and the Portal of Doom" was written by Tracey West and published by Scholastic in 2006 as part of the Nintendo Heroes series.

In the book, a mysterious portal suddenly appears in Hyrule which absorbs all things around it and threatens to destroy the land. Link and Navi have to travel across Hyrule to learn five parts of a song which will destroy the portal.

Although officially licensed by Nintendo, it's considered to be non-canon.

Majora's Mask contains a reference to the Star Fox characters. The masks on the second row of the mask screen resemble the same animals that the Star Fox team is based on, including one of their enemies, a former member of their team who betrayed them.

In order:
• Keaton Mask = Fox
• Bremen Mask = Falco
• Bunny Hood = Peppy
• Don Gero's Mask = Slippy
• Mask of Scents = Pigma

At one point in the Spirit Temple in The Legend of Zelda: Ocarina of Time, Link must fight an Iron Knuckle that turns out to be a hypnotized Nabooru, who returns to her senses after being defeated. By clipping the camera through her Iron Knuckle armor, you can see her head modeled underneath her helmet, likely to facilitate the post-defeat cutscene where her armor falls off.

Furthermore, every other Iron Knuckle in the game also has a placeholder Gerudo head modeled underneath the helmet. While much of the head's face is obscured by chainmail, the details that are present indicate that it is most likely an early version of Nabooru's design; of note is that the head's hairstyle is closer to that seen on Gerudo Village's guards, implying that this element was reused for them when Nabooru's design was revised to the version seen in the final game.

This placeholder head is also present inside the Iron Knuckles that Link encounters in The Legend of Zelda: Majora's Mask, due to that game reusing many assets from Ocarina of Time.

During day 3 at the Romani Ranch, you can trigger a conversation where Romani tells you that that night is finally the night when she gets to drink Chateau Romani. According to the sisters, the properties of Chateau Romani are so potent that children aren't allowed to drink it under normal circumstances, drawing parallels with alcohol in the real world. It's also only served in the Milk Bar, where children aren't allowed, and is only open at night. The scene at the ranch unfolds with Cremia stating that she acknowledges Romani's adulthood, and asks her little sister to sleep in her bed tonight. Cremia dishearteningly utters "See you... Tomorrow... OK?" while Romani cheerfully adds "See you tomorrow!"

It seems as though Cremia knows that they're about to die, and is giving Romani the drink to dull her senses, so that she remains blissfully unaware of their destruction.

At the beginning of the game, you come across a warped dead Deku like figure. We can presume that this Deku scrub died in a horrible way. Additionally, later in the game, the Deku butler directly states that Link reminds him of his son, and he is seen weeping over the figure in the end credits. It's likely that this figure is the butler's son, and his spirit has been with you throughout the whole game.

After slashing a sign with your sword, playing the Song of Healing while near the sign will repair it. Once the song is finished, the solving a puzzle jingle plays and the sign magically repairs itself.

This same thing happens in Ocarina of Time with playing Zelda's Lullaby.

After slashing a sign with your sword in Ocarina of Time, playing Zelda's Lullaby while near the sign will repair it. Once the song is finished, the solving a puzzle jingle plays and the sign magically repairs itself.

This same thing happens in Majora's Mask with playing the Song of Healing.

After receiving the Romani's Mask, if you protect Romani's Ranch from the invaders on the First Day, and help Cremia deliver the milk to Clock Town, you'll receive 1 of 3 rewards. Link can get either a Huge Rupee (worth 200 Rupees), some Chateau Romani, or a hug.

If Link receives the hug, Cremia will hold Link up close to herself and a message will appear saying "You did it! You helped Cremia!" "You feel all warm and fuzzy! inside! Sigh... You could get used to this!" The extra exclamation point after fuzzy was removed in later versions of the game.

The five main areas mirror the five stages of grief.

Clock Town is denial; its residents continue their daily lives refusing to believe the moon will fall.

Woodfall is anger; the Deku king is trying to kill a young monkey who allegedly kidnapped his daughter.

Snowhead is bargaining; Darmani begs Link to bring him back to life.

Great Bay is depression; Mikau dies trying to save the eggs of his love interest Lulu, leaving her alone.

Ikana Valley is acceptance; the only thing Link has left to conquer is himself, facing his own grief at the loss of his friend. The friend who began the journey, Navi.

In early versions of Majora's Mask, the moon had no face. This could be why some promotional art shows the moon with no face.

The Japanese version of Majora's Mask contained three save slots as opposed to the two that the American release saw. However, in the Japanese version, the owl saving feature did not exist, making the Song of Time the only way to save. This proved to be annoying and owl saving was added to the American release, at the cost of one save slot.

Majora's Mask has the least number of dungeons of any game in the Zelda series, containing only four on the main world. While there are technically four more on the moon, they are small, contain no bosses, and are completely optional, requiring a set number of happy masks to access each one.

In the Japanese version, the cry that Skull Kid makes when attempting to crash the moon into Termina is coded as a sound effect associated with his actor. Consequently, the noise becomes significantly quieter when the camera cuts to a close-up of the moon's face. In the international release, this is adjusted so that Skull Kid's cry is instead coded as a global sound effect, ensuring that its volume remains consistent throughout the cutscene.

Depending on what you name your save file, the name inputted will act as a seed that determines the position of the twinkling white stars in the night sky, while the blue stars and larger red planet remain in the same position. Since there is a character limit of 8 characters for a name, the number of possible variations is estimated to be somewhere under 5.3 billion, the key word being "under" as this cosmetic feature does not utilize all 127 characters available, so the actual number is bound to be lower. This feature was explained to the Japanese audience at launch, but this was not known in the West until 2021.

In an article for the September 2000 issue of Nintendo Power, Jason Leung, the writer for the game's English-language script, claimed that the South Clock Town Business Scrub's allusion to his work keeping him away from his wife is a nod to the tribulations that the developers at Nintendo of Japan were going through while working on the game.

In the game's files are unused graphics that say "Game Over" and "Continue Playing?" In the final game, losing all of the player's hearts will warp said player back to the beginning area, and Spoiler:letting the moon fall will result in a lengthy cut scene followed by the famous words, "You've met a terrible fate, haven't you?" accompanied by the Happy Mask Saleman's chuckle.