Square Enix and Gust are getting together for a crossover. Characters from New Atelier Rorona will be in Kaku-San-Sei Million Arthur, a free to play card RPG on PlayStation Vita.
There’s actually a whole story that ties the two games together. Morgan a witch from Million Arthur summons an alchemist from a different world, the New Atelier Rorona world. Astrid appears along with a lot of Punis (slimes in the Atelier series), which causes turmoil in the alternate Britain. Arthur then works with Rorona and Cordelia to collect Punis so they can all find Astrid. Other Atelier characters appear too like Liona and Pamela. This in-game event will take place between November 14 to November 25.
Also from November 14 and December 16 players will get a special Rorona card. New Atelier Rorona comes out on November 21 for PlayStation 3 and PlayStation Vita.