Atelier Ryza: Ever Darkness & the Secret Hideout is a role-playing video game developed by Gust, and originally released in Japan for the PlayStation 4, Nintendo Switch and Microsoft Windows in September 2019. It was released in North America in October 2019 and rest of the world in November 2019 for the same consoles. It is the twenty-first main entry in the Atelier series.

A sequel, titled Atelier Ryza 2: Lost Legends & the Secret Fairy, was released on December 3, 2020 in Japan, and in January 2021 in North America and Europe for PlayStation 4, PlayStation 5 and Nintendo Switch, with a Microsoft Windows version being released in same month for all regions. A second sequel, titled Atelier Ryza 3: Alchemist of the End & Secret Key, is scheduled to release for Microsoft Windows, Nintendo Switch, PlayStation 4, and PlayStation 5 in February 2023.

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