Nearly the entire Atelier series is broken down into trilogies of games taking place in the same world with recurring characters and events. Only two of the series’ groupings were duologies: the Japan-only Gramnad Saga and the Mana Khemia games. Both of these pairs featured on the now-obsolete Playstation 2. Where the Gramnad Saga followed the naming conventions from previous titles with Atelier Judie and Atelier Violette, Mana Khemia took a step away from the usual trappings, at least externally.
Featuring the ninth and tenth games in the Atelier series, both games still exercise the mechanics of the series. Synthesis is still vital to progress throughout the games though there is a bit more emphasis on strategic combat through abilities rather than item-slinging. There are a couple of other adjustments that find their way into the formula of the series and stick, creating a foundation for the next generation of Atelier offerings to build off of and improve upon as the series grows.