Project SEKAI: Colorful Stage feat. Hatsune Miku

Project SEKAI COLORFUL STAGE! feat. Hatsune Miku (プロジェクトセカイ カラフルステージ！ feat. 初音ミク), also known as Hatsune Miku: COLORFUL STAGE! in overseas version or shortly as Project SEKAI (プロジェクトセカイ), is a rhythm game developed by Colorful Palette and Crypton Future Media, and published by SEGA.

The first server of Project SEKAI released on September 30, 2020 for iOS and Android devices, the international server released on December 7, 2021 for the same devices.

Other media

 * Main article: Petit Sekai