Hit the Notes Your Way: The Ultimate Guide to Custom Songs and Charts in Project SEKAI

If you’ve spent hours mastering Endless Discharge or full-comboing your favorite Virtual Singer tracks, you’ve probably asked yourself at some point: “Can I play my own custom songs in Project SEKAI?”

While the vanilla mobile game is traditionally a closed ecosystem rigidly bound to official updates, the landscape of custom tracks and fan-made charts has evolved drastically. Whether you are looking for official tools to build your own stages or third-party rhythm game simulators that replicate the exact Project SEKAI interface with custom libraries, here is everything you need to know about getting custom songs into your rhythm gaming rotation.

Method 1: The Official Way — The “Score Maker” Feature

For the longest time, playing custom or fan-made tracks meant stepping outside the official app. However, developers introduced the native Score Maker custom chart editor (pioneered on the Japanese server and rolling out globally).

While this feature focuses primarily on custom chart creation using existing in-game song assets and audio tracks rather than importing arbitrary MP3 files, it completely changes how you interact with community-made content.

• What it lets you do: You can design your own difficulty levels, place taps, flicks, and hold notes from scratch, and test your mettle against unique community-made patterns.
• How to access it: Keep your game updated to the latest version and check the game’s menu for the dedicated editor/community level hub.
• Community sharing: Much like Geometry Dash, you can browse, play, like, and share custom-charted levels created by other players, virtual promoters, and even legendary Vocaloid producers.

Method 2: The Fan-Favorite Simulator — Sonolus

If your goal is to play completely custom audio tracks with custom charts styled with an exact Project SEKAI user interface, Sonolus is the gold standard.