Ar tonelico: Melody of Elemia is a PlayStation 2 console role-playing game produced by Banpresto and Gust. There were other media releases based on the game, including the comic Ar tonelico -arpeggio-, the OVA Ar tonelico, and several drama CDs.

The story begins on the floating landmass named Sol Ciel. The setting for the game is an extremely tall tower named Ar tonelico  and the plot is mainly about relationships between humans and an artificial race called Reyvateil.