The Cosmere is a shared universe created by author Brandon Sanderson that encompasses multiple fantasy series and novels. Each series features its own unique world, magic systems, and characters, but they are all interconnected through underlying themes and elements. Notable series within the Cosmere include Mistborn, The Stormlight Archive, and Elantris. In the Cosmere, various planets and realms exist, each with distinct cultures and histories. The magic systems are often tied to the fundamental forces of the universe, such as Investiture, which is the source of magical power. Characters may appear across different series, hinting at a larger narrative that spans the entire Cosmere.