Harmonic Drive

Harmonic Drive is now an open-source project! 
Harmonic Drive is an arcade-style rhythm game built around player reactive background effects, AI generated music, community submitted charts and community submitted background effect packs.

The game supports 4KEY - 8KEY charts and the featured songs in the game all use 5KEY.
Subscribe to charts via the workshop, import charts from your friends or create your own in the Chart Editor!


Check out the EMS Creator to customize your in-game effects using the "Emotional Motion System". Customize your three primary colors, define background images for both gutters, etc.
Want a really trippy experience?! Level up and unlock the "Black Hole" gameplay modifier in the Loadouts menu and enable "Disable chart background" in the Options menu. :)
The soundtrack ranges from energetic dance tracks to emotional late-night melodies, with multiple gameplay modes and difficulty levels available for every song. Jump in for a casual session, or push yourself into the hardest charts the game has to offer.
Features
AI generated soundtrack primarily featuring EDM

Multiple gameplay modes for every song

Difficulty options ranging from beginner-friendly to seriously challenging

Online leaderboards for score chasing and competition

Multiplayer gameplay

Calibration tools for low-latency gameplay

Cross-platform support for Windows, macOS, iOS, and Android

Frequent updates with new songs and improvements