月亮碎片 are 困难模式 post-石巨人 制作材料s dropped by the 天界塔 during the 月亮事件. There are four distinct types of fragments, each dropped by, and corresponding to, one of the Celestial Towers. They are primarily used at the 远古操纵机 制作站 to craft several powerful late-game items, including 盔甲, 武器, 工具, 翅膀, and others.
In addition to being dropped, a single fragment can be crafted by combining one each of the other three types. For example, if a player were missing a Solar Fragment but had a surplus of all the other types, they could combine a Vortex Fragment, Nebula Fragment, and Stardust Fragment into one Solar Fragment. This is done at the Ancient Manipulator.