Data miners have uncovered clues to two pieces of unreleased content in the files for The Legend of Zelda: Ocarina of Time remaster, pointing to a possible return of the Master Quest mode and an unidentified third mask. However, none of this content has been confirmed by Nintendo.
BlueSky user MrCheeze found that some code carries the "MQ" tag, with screenshots also showing strings like "DodongoCavern" and "DodongoCavern_MQ." This has led to speculation that the Master Quest mode, which was not included in the initial release, might return as additional content.
Master Quest first appeared with the GameCube port and later became standard content in the 3DS remaster. The current files are insufficient to prove that this mode will definitely be released, nor do they indicate whether it will be offered for free or as paid DLC, or if it will retain the original design or be remade.
YouTuber Austin John Plays also discovered that the existing Link and Zelda amiibo masks are numbered Mask 101 and Mask 102 in the files, with an unreleased Mask 103 also present. Related NPC dialogue includes terms like "otherworldly" and "suspicious," leading some to speculate a connection to The Legend of Zelda: Majora's Mask, though this remains conjecture. The reuse of accessories, character lines, and assets serves only as circumstantial evidence; Nintendo has not confirmed the identity of the third mask or plans for another remaster.