Harmonic Drive

Harmonic Drive is an arcade-style rhythm game with AI-generated music, community-submitted charts and background-effect packs. You play charts by hitting notes in time with the music; charts support 4KEY to 8KEY formats, while all featured songs use 5KEY. Each song has multiple gameplay modes and difficulty levels, from beginner-friendly options to challenging charts.

Charts and effects

You can subscribe to charts through the workshop, import charts from friends or create your own in the Chart Editor. The EMS Creator uses the Emotional Motion System to customize in-game effects, including the three primary colors and background images for both gutters. You can also unlock the Black Hole gameplay modifier by leveling up, then enable “Disable chart background” in the Options menu.

Music and competition

The soundtrack is primarily EDM and ranges from energetic dance tracks to emotional late-night melodies. Online leaderboards let you compare scores, and the game also includes multiplayer gameplay and calibration tools for low-latency play.