How to Get Custom Songs on Project SEKAI

Groove to Your Own Beat: How to Play Custom Songs and Charts in Project SEKAI

If you’ve spent any time scrolling through TikTok, YouTube, or X (formerly Twitter), you’ve likely stumbled upon mind-blowing Project SEKAI: Colorful Stage! clips featuring wild, custom-charted tracks that aren’t actually in the official game. Whether it’s an internet meme song, an obscure Vocaloid underground hit, or an impossibly fast multi-finger fan chart, you might find yourself asking: How are people playing these?

Can you mod official Project SEKAI to inject custom songs? The short answer is no—the official app doesn’t support custom song injection, and trying to modify game files directly can land you with a ban.

However, the rhythm game community has an ingenious solution: Sonolus.

Sonolus is an open-source audio-driven platform designed to replicate the UI, physics, and feel of various rhythm games—including a pitch-perfect replica of Project SEKAI. Through community servers, it allows you to play official charts, practice tools, and thousands of custom fan-made charts completely separate from the main game.

Here is your complete, step-by-step guide to setting up custom songs and diving into the world of custom Project SEKAI charts safely and easily.

Step 1: Understand What You Need

Because custom songs don’t run inside the official app, you will need:

1. The Sonolus App: Available for Android (via APK/official sources) and iOS (using permitted sideloading or installation methods outlined on the official Sonolus website).
2. A Project SEKAI Server Link: Custom servers act as libraries that host the skins, audio, and custom chart data (levels) created by the community.

Step 2: Download and Install Sonolus

1. Head to the official Sonolus website or trusted community portals from your mobile device.
2. Download and install the app package appropriate for your operating system (Android or iOS).
3. Open the app. At first launch, it will look like a blank canvas waiting for server connections.

Step 3: Link the Custom SEKAI Servers

To get the authentic Project SEKAI experience loaded with custom songs, you need to connect to community-driven servers. The two major hubs you’ll want to add are:

• Official/Standard Sekai Server (sonolus.sekai.best): This pulls standard data and official tracks mirroring Sekai Viewer databases so you can play regular charts with custom practice tweaks.
• Next SEKAI Server ([coconut.sonolus.com/next-sekai](https://coconut.sonolus.com/next-sekai)): This is where the magic happens for custom songs. This community server acts as the primary hosting ground for custom charts, meme songs, crossover tracks, and long versions.

How to link a server in Sonolus:

1. Inside the Sonolus app, look for the option to Add Server or enter a server URL.
2. Type or paste the address of the custom server (