Yunyun Syndrome!? Rhythm Psychosis
Yunyun Syndrome!? Rhythm Psychosis is a rhythm adventure about a hikikomori girl. Official Steam key delivered digitally. Refunds available before activation.
Customer reviews
Reviews are not translated into English yet — we are adding translations.
System requirements
Minimum
- OS
- Windows 10, 11 (64bit)
- Processor
- Core™ i5-9400
- Memory
- 8 GB RAM
- Graphics card
- GeForce® GTX 1050 Ti 4GB
- Storage
- 3 GB available space
Recommended
- OS
- OS: Windows 10, 11 (64bit)
- Storage
- 3 GB available space
Source: Steam · updated September 7, 2026
What is Yunyun Syndrome!? Rhythm Psychosis
Yunyun Syndrome!? Rhythm Psychosis is a rhythm adventure from indie studio Alliance Arts, released on April 23, 2026. At the heart of the story is a hikikomori girl whose mind has finally drifted away on denpa songs. She posts cute, unhinged notes online that literally drive the world mad — all in the name of the mysterious Yun-yun.
The game blends rhythm mechanics with nonlinear storytelling: you catch the beat across more than 30 denpa tracks while uncovering the questions the developers pose head-on: why did the girl become a hikikomori? Why do her notes hold such power? The ending is nonlinear, and the answers depend on your actions.
Key Features
- More than 30 denpa songs — rhythm mechanics form the core of the gameplay
- Nonlinear ending — the story branches based on your choices
- A fusion of genres: rhythm game, adventure, and chaos simulator in the spirit of otaku culture
- Narrative told through "unhinged notes" — a distinctive way of delivering the story
Who the Game Is For
Yunyun Syndrome!? Rhythm Psychosis will appeal to those who value Japanese indie game development, enjoy story-driven rhythm games, and aren't put off by a strange, slightly manic narrative in a denpa aesthetic. If Hatoful Boyfriend or Space Channel 5 once resonated with you, this rides a similar wave.
Purchase and Delivery
After payment, your digital key is delivered to your email. Refunds are possible before the key is activated — reach out to support at @ashop_support. Buy Yunyun Syndrome!? Rhythm Psychosis at Ashop.
