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92% positive of 4,215 · Very Positive · Live from Steam
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“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.
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Review score: 91% on 2026-11-01 → 92% today (4,215 reviews)
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Works, but may need extra effort. Results from Valve's own testing.
9 items on Steam, newest first.
Every build released on Steam for this game since we started tracking it, with the developer's patch notes. Updated within minutes of each new build.
▶ Update to Ver. 1.3.1· Fixed an issue introduced in Ver. 1.3.0 where a different video played in "Yun are an idiot"· Fixed other minor bugs We are planning to continue updating the game, so we would be very happy if you could keep helping us spread the signal…
Hello, this is WHO YOU (Fuyuki Hayashi).Here's news about a new song update and new downloadable content.▶ Update to Ver. 1.3.0The following songs have been added in this update and can be played without any DLC.MEGA TSKRMecha Koi Ranman☆RORO JUMP! (feat. CHiN…
Hello, this is WHO YOU (Fuyuki Hayashi).Here's an update on what's coming in Ver.1.2.0.▶ Update to Ver. 1.2.0• Revised the English text throughout the game• Added an announcement launcher system that opens when the game is updated• Fixed other minor bugsBeyond…
▶ Update to Ver. 1.1.0· Expanded the sort and search features for “Songs”· Added a feature that allows note speed to be adjusted during rhythm game play· Added per-song audio sync adjustment, also known as local offset· Added more areas that can be controlled …
▶ Update to Ver. 1.0.9· Adjusted special dialogue to play on the title screen on specific dates· Adjusted the HARDCORE GAMER and NORMAL ratings, which were internally identical, by unifying all ratings except DEGENERATE (NORMAL, HARDCORE GAMER, TRYHARD) and co…
Hello, this is WHO YOU (Fuyuki Hayashi). I’m sending out two announcements with this news. ▶ Update to Ver. 1.0.8 Fixed a bug where some images could not be exported in MyPicture Implemented a special effect for certain “Keyboards” that increases the number of…
Total sales of the main game "Yunyun Syndrome!? Rhythm Psychosis" have surpassed 100,000 copies!To everyone who tuned in to our denpa. Thank you from the bottom of our hearts!
Thank you for playing Yunyun Syndrome!? Rhythm Psychosis. We would like to inform you that distribution of the demo version will end at May 7 at 2:00 AM PT. This decision was made because it has become difficult to keep the demo version aligned with ongoing up…
⚡ Yunyun Unhinged Post Recruitment Campaign ⚡Submission Period: April 14 – 21, 2026 🎁 We want your "Yunyun Unhinged Posts"!- Your unhinged post could be implemented in the rhythm game sections of the game!- If selected, your name will be featured in the game'…
The rhythm-adventure game where you stream cryptic conspiracy theories to the beat of high-energy denpa tunes, Yunyun Syndrome!? Rhythm Psychosis, officially arrives on April 24, 2026, at 1:00 PM JST The price has been set to $16.99 USD! The game is currently …
The rhythm adventure Yunyun Syndrome!? Rhythm Psychosis, where players ride the wave of denpa songs and spread absurd copypasta across the world, is set to release in April 2026!Along with this announcement, we’ve released a new trailer showcasing the game’s c…
Yunyun Syndrome!? Rhythm Psychosis has announced that, along with the updated demo, the game is now scheduled for release in April 2026. We originally announced a “winter release,” and we sincerely apologize for keeping you waiting a little longer. However, we…