“Yunyun Syndrome!? Rhythm Psychosis” is a rhythm adventure game about a psychotic hikikomori girl - also an avid anonymous poster - who corrupts the world with her severe brain rot from listening to too many denpa songs. Yunyun all over this ♡♡♡♡ world with your degen otaku-posting.
Developer: Alliance Arts WHO YOU
Publisher: Alliance Arts
Genres: Adventure Indie Simulation
Tags: 2D Adventure Anime Choices Matter Cute Dark Humor Female Protagonist Immersive Sim Indie LGBTQ+ Multiple Endings Music Psychological Psychological Horror Rhythm Simulation Singleplayer Story Rich Visual Novel
Release Date: Oct. 9, 2025
Reviews: 1310 (Very Positive)
Price: Free
Platforms: Windows
Languages: English, Simplified Chinese, Traditional Chinese, Japanese*, Korean<br>*languages with full audio support
Steam Achievements: None
Yunyun Syndrome!? Rhythm Psychosis Demo on Steam
Categories: Game demo Single-player
AppID: 4074930 (demo) - 5 Screenshots, 2 Videos on store page.
Site by Dragon Dropper © 2025
Privacy Policy