A musical bullet-hell where all things beautiful are deadly. Dodge well little nanobot, you don't have much time.
We are not affiliated with IsThereAnyDeal.










This game features full Steam Workshop integration for custom levels!
"Project Arrhythmia" is a musical bullet-hell in which all things beautiful are deadly. A cacophony of lights, music, pulses and blocks, Project Arrhythmia features tight bullet-hell style gameplay where up to 4 players in local co-op must navigate their way through evolving scenes and obstacles, all timed to the beat.
Set in 207X, a mysterious disease called "LNNS" has been ravaging the world. A lone AI researcher, Anna Schroeder, attempts to find the cure with her trusty supercomputer companion HAL. Stumbling upon various “Projects,” the duo decides to investigate the efficacy of a cure using a pulse/rhythm-based interface. Work in progress.
Some screenshots used are from UGC:
Steam data © 2025 Valve Corporation. Steam and the Steam logo are trademarks and/or registered trademarks of Valve Corporation in the U.S. and/or other countries. Independent of Valve. Pricing and availability subject to change.










This game features full Steam Workshop integration for custom levels!
"Project Arrhythmia" is a musical bullet-hell in which all things beautiful are deadly. A cacophony of lights, music, pulses and blocks, Project Arrhythmia features tight bullet-hell style gameplay where up to 4 players in local co-op must navigate their way through evolving scenes and obstacles, all timed to the beat.
Set in 207X, a mysterious disease called "LNNS" has been ravaging the world. A lone AI researcher, Anna Schroeder, attempts to find the cure with her trusty supercomputer companion HAL. Stumbling upon various “Projects,” the duo decides to investigate the efficacy of a cure using a pulse/rhythm-based interface. Work in progress.
Some screenshots used are from UGC:
A musical bullet-hell where all things beautiful are deadly. Dodge well little nanobot, you don't have much time.
We are not affiliated with IsThereAnyDeal.
Steam data © 2025 Valve Corporation. Steam and the Steam logo are trademarks and/or registered trademarks of Valve Corporation in the U.S. and/or other countries. Independent of Valve. Pricing and availability subject to change.