Moon's Spawn is a massive floating island in the fantasy series Malazan Book of the Fallen by Steven Erikson. It is home to the T'lan Imass, an ancient race of undead warriors, and is known for its mysterious and powerful magic. The island is often shrouded in mist and is a significant location in the series' complex narrative. The island is also associated with the Moon, which plays a crucial role in the lore of the series. Moon's Spawn serves as a strategic base for various factions and is a focal point for conflicts throughout the story. Its unique characteristics and history contribute to the rich world-building of the Malazan universe.