Project Sekai: Colorful Stage! feat. Hatsune Miku is a rhythm game developed by SEGA, Craft Egg, and Colorful Palette. It features popular Vocaloid characters, including Hatsune Miku, and original characters in a virtual world. Players interact with music and experience storylines while performing rhythm-based challenges. The game blends various music genres and creative elements, offering a unique experience for fans of rhythm games and Vocaloid culture.