PCGame

Yunyun Syndrome!? Rhythm Psychosis

A rhythm adventure where anonymous posts threaten the world

Alliance Arts, WHO YOU · Published by Alliance Arts · Released Apr 23, 2026

AdventureIndieSimulation

Reviews
Very Positive
91% of 4,340
Recent reviews
Overwhelmingly Positive
97% of 200 in 30 days
Players
53
daily peak, Oct 28, 2026
Steam Deck
Playable
Last update on Steam
1 week ago
Oct 15, 2026
Minimum PC
GTX 1050 Ti
8 GB RAM · 3 GB disk
Full requirements

What is Yunyun Syndrome!? Rhythm Psychosis?

You play as Qtie, a shut-in obsessed with the fictional character Yunyun, in a single-player rhythm adventure. You tackle rhythm sections set to denpa songs—deliberately strange, catchy music—and post anonymously on social media, with multiple endings to the story.

For you if...

  • +you like rhythm games mixed with visual novel storytelling
  • +you enjoy cute anime art alongside psychological horror themes

Not for you if...

  • −you dislike replaying songs to work toward full completion

What players say

91% of 4,340 reviews are positive · 97% of 200 in the last 30 days

Players praise the song selection, rhythm gameplay, and character-focused story. Earlier reviews criticize the English localization's slang and accuracy, with mixed reactions to its subsequent overhaul.

Screenshots and trailer

Yunyun Syndrome!? Rhythm Psychosis screenshot 1

Yunyun Syndrome!? Rhythm Psychosis system requirements

Minimum: GTX 1050 Ti, 8 GB RAM, 3 GB of disk space.

As published by the developer.

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Minimum

OS
Windows 10, 11 (64bit)
Processor
Core™ i5-9400
Graphics
GeForce® GTX 1050 Ti 4GB
Memory
8 GB RAM
Storage
3 GB available space

Recommended

OS
OS: Windows 10, 11 (64bit)
Storage
3 GB available space

Does Yunyun Syndrome!? Rhythm Psychosis have co-op or multiplayer?

No: single-player only, no multiplayer modes declared.

Does Yunyun Syndrome!? Rhythm Psychosis run on Steam Deck?

Playable Playable: it runs on Steam Deck with some adjustments.

  • Default controller config not fully functional
  • Sometimes shows mouse, keyboard or non-Deck controller icons
  • Some text entry requires manually opening the on-screen keyboard
  • Some in-game text is small and may be hard to read
  • Default graphics settings perform well on Steam Deck

PC version details

DRM
None declared on Steam
Controller
Keyboard and mouse
Platforms
Windows
Achievements
49
Steam features
Cloud saves, Family Sharing
Languages
Full audio: Japanese. Text only: English, Simplified Chinese, Traditional Chinese, Korean, French, German, Portuguese - Brazil, Polish, Russian, Italian, Spanish - Spain, Spanish - Latin America, Thai, Turkish.

Does Yunyun Syndrome!? Rhythm Psychosis use AI-generated content?

No AI-generated content is disclosed on the game's Steam page.

Self-reported by the developer under Steam rules: it covers AI content that ships in the game, not tools used to make it. Steam page checked on Oct 27, 2026. How to filter AI games on Steam

Tags

Recent updates

9 DLC available.

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