Arguably one of the darker entries in the LotZ franchise, The Legend of Zelda: Majora's Mask takes everything you know about the series' structure and chucks it out the window. Taking place right after the events of Ocarina of Time, The Legend of Zelda: Majora's Mask sees Link taken to the mysterious world of Termina, a land where time is quite short because the moon is going to crash into it in three days' time. From there, you travel through Termina's four main regions and try to uncover the mysteries surrounding the catastrophe and the enigmatic Skull Kid wearing Majora's Mask itself.
As you'd expect, masks play an important role throughout the game, providing new powers and abilities and even transforming Link into different Link-forms. Needless to say, the entire atmosphere is quite dark and broody, rivaling even Twilight Princess. And as the days progress, the people you interact with begin realizing their lives are about to end influences the way they conduct themselves in the game, with reactions ranging from desperation to quiet acceptance of their dark fate.