Ar tonelico Qoga: Knell of Ar Ciel, released in Japan as Ar tonelico III: The Girl's Song that Pulls the Trigger of World's Demise, アルトネリコ3 世界終焉の引鉄は少女の詩が弾く?, lit. "Arutoneriko Surī Sekai Shūen no Hikigane wa Shōjo no Uta ga Hiku") is a console role-playing game produced by Gust and Namco Bandai for the Sony Playstation 3. It is the final installment in the Ar tonelico trilogy, as indicated by "qoga", a hymmnos word meaning "end". It takes place in the Reyvateil-ruled country of Clustania, which is within an area known as the Sol Cluster . Clustania is situated on the third tower in the world of Ar Ciel, which floats above the uninhabitable Sea of Death. It is the first 3D game in the series.