Project SEKAI: Colorful Stage! is a video game developed by Colorful Palette and published by Sega. The game is a spin-off from Sega's Hatsune Miku: Project DIVA series, featuring the 6 Virtual Singers of Crypton Future Media, Hatsune Miku, Megurine Luka, Kagamine Rin and Len, MEIKO, and KAITO, alongside the cast of 20 original human characters that are split into five themed units. Set in the real world where Virtual Singers only exist as fiction, the characters come across another dimension called "SEKAI," where various "true feelings" are projected. The game was released for Android and iOS devices on September 30, 2020. Sega released an English server of the game worldwide on December 7, 2021, with expansion to 5 countries in Southeast Asia on September 25, 2023. A Taiwanese server, published by Ariel Network, was released on September 30, 2021. A Korean server was released on May 20, 2022, in South Korea, published by Nuverse.