The gameplay of Majora's Mask expands on that of Ocarina of Time; the game retains dungeon puzzles and ocarina songs, and introduces character transformations and the restriction of a three-day cycle. As in previous installments, Link can perform basic actions such as walking, running and limited jumping, and must use items to battle enemies and solve puzzles. Link's main weapon is the sword, which can be upgraded throughout the game. Other weapons and items are available—Link can stun enemies with Deku Nuts, attack from a distance with a bow and arrows, block or reflect attacks with a shield, destroy obstacles and damage enemies with bombs, and latch onto objects or enemies with the Hookshot. Magic power allows attacks such as magical arrows or spin attacks, or the use of special items.