Project Sekai Colorful Stage! feat. Hatsune Miku

How Diarkis Powers Project SEKAI’s Real-Time Multiplayer Experience

Diarkis, a cutting-edge server-and-client network middleware, plays a critical role in supporting the real-time networking features of Project SEKAI COLORFUL STAGE! feat. Hatsune Miku—one of Japan’s most successful rhythm games and virtual idol platforms.

Project SEKAI is a massively popular mobile rhythm game and live music experience developed by SEGA and Colorful Palette, featuring the globally renowned virtual singer Hatsune Miku alongside original characters. The game combines music gameplay with a social, virtual world where players can attend “Virtual Lives” (in-game concerts), interact in real-time lobbies, and join multiplayer rhythm battles.

To make these live, multiplayer elements possible, Diarkis’ network middleware provides the foundation for scalable, low-latency communication, enabling:

• Real-time matchmaking between players for multiplayer rhythm sessions
• Stable, synchronized Virtual Live concerts where thousands of users can gather simultaneously
• Persistent multiplayer lobbies that allow smooth, responsive interaction across devices

Thanks to Diarkis' decentralized and fault-tolerant architecture, Project SEKAI can support millions of users globally while maintaining consistent performance and minimal latency—even during peak traffic or live events. Its support for TCP, UDP, and RUDP protocols ensures flexible, reliable networking under various mobile conditions.

For game developers building real-time multiplayer mobile games, Diarkis offers a proven, production-ready networking solution that can scale globally while delivering an immersive and reliable user experience—just like in Project SEKAI.