Top 9 rhythm-game open source projects

Fast osu! port for Linux (and more)

Kade Engine is a Competitive Rhythm Game engine rewrite for FNF with Quality of Life features included.

ProjectFNF 2.0, based on Psych Engine

[outdated] Beatmania IIDX and Sound Voltex hybrid controller

🍌BananaBeats - Yet-another BMS rhythm game!

Open source rhythm game and BMS simulator/player written in C#

A light-weight rhythm game engine with auto beat map generation built with Ren'Py

An in-depth document about Chunithm via reverse engineering.

🍙 Dancing☆Onigiri (CW Edition) - Web-based Rhythm Game