White Cat Project NEW WORLD'S, the smartphone 3D action RPG by Colopl, is set to launch a collaboration event with Koei Tecmo's Gust brand Atelier series, beginning February 27, 2026 (Friday). Three characters will make their appearance: Sophie from Atelier Sophie: The Alchemist of the Mysterious Book, Ryza from Atelier Ryza: Ever Darkness & the Secret Hideout, and Yumia from Atelier Yumia: The Alchemist of Memories & the Envisioned Land.
Collaboration Event Overview
Starting February 27, 2026 (Friday), three characters from the Atelier series will arrive in the world of White Cat Project NEW WORLD'S.
Sophie (CV: Yuka Aisaka)
From: Atelier Sophie: The Alchemist of the Mysterious Book
Character Introduction PV: https://youtube.com/shorts/dLsQTW0VGgM?feature=share
About Atelier Sophie: The Alchemist of the Mysterious Book
An alchemy RPG featuring the beginner alchemist Sophie and a talking book named Plachta. This is the first entry in the "Mysterious" sub-series, set in a unique and fantastical world.
Official Site: https://social.gust.co.jp/sophie/
Ryza (CV: Yuri Noguchi)
From: Atelier Ryza: Ever Darkness & the Secret Hideout
Character Introduction PV: https://youtube.com/shorts/WlpfjCJaEGk?feature=share
About Atelier Ryza: Ever Darkness & the Secret Hideout
Centered on the theme of "the small growth of ordinary boys and girls," this is the first entry in the "Secret" sub-series, where an ordinary girl named Ryza and her friends embark on a summer adventure sparked by their encounter with alchemy.
Official Site: https://www.gamecity.ne.jp/atelier/ryza/
Yumia (CV: Wakana Kuramochi)
From: Atelier Yumia: The Alchemist of Memories & the Envisioned Land
Character Introduction PV: https://youtube.com/shorts/-jf6p_4hH1I?feature=share
About Atelier Yumia: The Alchemist of Memories & the Envisioned Land
Set in a world where alchemy is considered a "forbidden art" said to bring ruin, the story follows Yumia — a young woman who lost her mother in an accident — as she seeks to uncover her alchemist mother's true intentions and the truth behind the forbidden art.
Official Site: https://atelier.games/yumia/jp/
Collaboration Campaign on Official X
A campaign is underway on the White Cat Project official X account (https://x.com/wcat_project). By following the account and quote-reposting the campaign post with the hashtag "#白猫アトリエコラボ," participants can enter a draw to win signed colored paper from each character's voice actor — Yuka Aisaka (Sophie), Yuri Noguchi (Ryza), and Wakana Kuramochi (Yumia) — with 5 winners per character. Check the official X account for full details including the entry period.
About White Cat Project NEW WORLD'S
White Cat Project NEW WORLD'S is a full-fledged 3D action RPG with easy-to-pick-up controls. In addition to battles and town building, the game features real-time multiplayer battles for up to 4 players. The "Skill Combination" battle system enables faster-paced action and creative combinations of skills and characters, all set within a sweeping adventure story. The game celebrates its 12th anniversary on July 14, 2026 (Tuesday).
- App Name: White Cat Project
- Price: Free (with in-app purchases)
- Download: https://colopl.co.jp/app/rd/pr/?/snn/1xmd7nqe/
- Official Site: https://colopl.co.jp/shironekoproject/
- Official X: https://x.com/wcat_project
