The All-Night Mask (夜更かしのお面, Yofukashi no Omen?) is one of the twenty-four masks that Link can collect in The Legend of Zelda: Majora's Mask. It has the unusual power to keep its wearer awake forever. According to a Gossip Stone, the All-Night Mask is a torture device used to induce insomnia for the person bearing the mask.