- New Song Update & New DLC - 9 October 2026
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. CHiNCHiYA)Strawberry CakeQuit being a maid? Quit being a human?▶ New DLCBeyond this update, we plan to keep adding new songs and, above all,continue improving the game with updates that make its Denpa even stronger.We hope even more people will tune in to Yunyun Syndrome!? Rhythm Psychosis.And we'll keep doing our best to make your kokoro go DOKIDOKI with its Denpa!We'd be very happy if you'd keep spreading the Denpa of Yunyun Syndrome with us.WHO YOU
- Patch Notes Ver. 1.2.0 - 1 October 2026
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 this update, we plan to keep adding new songs and, above all, continue improving the game with updates that make its Denpa even stronger.We hope even more people will tune in to Yunyun Syndrome!? Rhythm Psychosis.And we'll keep doing our best to make your kokoro go DOKIDOKI with its Denpa!We'd be very happy if you'd keep spreading the Denpa of Yunyun Syndrome with us.WHO YOU
- Patch Notes Ver. 1.1.0 - 30 June 2026
▶ 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 using only the keyboard· Adjusted volume so they can be set separately for story parts and rhythm game parts· Adjusted the rhythm game start animation so it can be skipped· Added a feature to display judgment distribution· Added unhinged posts from the “Yunyun Unhinged Post Submission Campaign”· Fixed other minor bugsTo help Yunyun Syndrome!? Rhythm Psychosis be transmitted to even more people, we are also preparing updates such as adding new songs and reviewing the text.We are planning to continue updating the game, so we would be very happy if you could keep helping us spread the signal of Yunyun Syndrome!? Rhythm Psychosis toget…
- 100,000 copies sold! - 19 June 2026
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!
- Patch Notes Ver. 1.0.9 - 1 June 2026
▶ 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 correcting the description text in HELP・Updated the Closed Beta Test participant list in the credits· Fixed minor bugs such as typos in textWe will keep doing our best so that Yunyun Syndrome!? Rhythm Psychosis can be transmitted to even more people, and above all, so that it can make your kokoro more dokidoki through its signal.We are planning to continue updating the game, so we would be very happy if you could keep helping us spread the signal of Yunyun Syndrome!? Rhythm Psychosis together.
- Notice of Demo Version Distribution End - 1 May 2026
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 updates to the full product, making it no longer feasible for the demo to properly serve its intended role. In addition, we have received reports from other players alleging misuse of the demo version for cracking-related activities. We sincerely apologize for any inconvenience this may cause to those who are currently playing the demo, and we appreciate your understanding.
- Patch Notes Ver. 1.0.8 & 50,000 Copies Sold! - 30 April 2026
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 follows gained by 50x Fixed segments where text overflowed in certain languages Fixed other minor bugs ▶ Game Surpasses 50,000 Copies! Yunyun Syndrome!? Rhythm Psychosis has sold more than 50,000 copies within five days of release. Thank you so much! This project began with just the two of us wanting to give form to what we "love." Thanks to the support of everyone involved and all of our fans, we are truly happy that it has become a “signal” reaching so many people. Starting with this update, and based on the valuable opinions and feedback we have received from everyone, we will continue making fixes and adjustments from every pe…
- Patch Notes Ver.1.0.7 - 27 April 2026
▶Update Details Reduced the amount of DENPA LEVEL (Denpa Level) required to reach 100% Added Awesome Keeb Modded Ver. from Part 2 A heavily modded Awesome Keeb that instantly ends “Denpa Songs” (Does not affect achievements or scores) Revised all English text that has original source references Fixed other minor bugs and issues Thank you for your continued support.
- Patch Notes Ver.1.0.6 - 25 April 2026
Adjustments to some English localization text. ------------------------------------------------------------------------------------------------ ▶ In-game Net User Comments やめろ Old: END FASCISM New: SOMEBODY STOP THIS ｷﾀ―――(ﾟ∀ﾟ)―――― ! Old: XD XD XD XD XD XD New: LFG―――(ﾟ∀ﾟ)―――― ! インターネットがめちゃくちゃに Old: the web is a sh1tfest rn New: the internet's such a mess rn やあ （´・ω・｀) Old: Yaaaa-ho~ :3 New: Heyyy （´・ω・｀) お兄ちゃんどいてそいつ殺せない Old: are they fighting to the death?? don't kill my husbando ;-; New: Bro, move out of the way so I can kill her! ノンアルがいいよ Old: get urselves some 0% beer and deal New: love some of that 0% beer 令呪で縛らないから Old: i will NEVER be victimized under fascism again New: their Command Spells ain't got nothing on me! びゃあ゛ぁ゛゛ぁうまひぃ゛ぃぃ゛ Old: god's tongue doesn't lie... New: Mwahhh! Delicious! うにゅほ Old: uuhhhhmmm. New: Unyuho! どしがたい Old: heartless MFERS New: irredeemable おあがりよ！ Old: no…
- Regarding the English Localization Issues and Update Timeline - 25 April 2026
With the Ver. 1.06 update, the English text has been revised. https://store.steampowered.com/news/app/2914150/view/502856256328827746 ========================= Hello everyone, My name is Fuyuki Hayashi (WHO YOU), the creator of Yunyun Syndrome!? Rhythm Psychosis. As this is an urgent matter, please allow me to communicate via machine translation. First of all, thank you very much to everyone who has purchased Yunyun Syndrome!? Rhythm Psychosis, added it to your wishlist, or shown interest in the game. We are aware that many players—especially those enjoying the game primarily in English—have raised concerns about the quality of the localization. These comments have been shared through Steam reviews and the Community Hub, as well as on X, YouTube trailer comments, Discord, and other platforms. While it is difficult to review every single message in detail, I am reading as many of your co…
- Notice of Upcoming Demo Update (Full-Version Specs) & Pre-Launch AMA - 22 April 2026
▶ DEMO Update to Full-Version SpecificationsAround 0:00 (JST) today, ahead of the full version release on April 24, we will be updating the demo version to partially reflect the latest full-version specifications.【Update Details】・ Addition of bad ending・ Chart (score) adjustments・ Various text revisions・ Addition of WikipediQ pages・ Enhanced visual effects/stagingPlease note that, in conjunction with the update to the latest full-version specifications, the following will be reset:○ Save data will be initialized ○ Monthly rankings will be initializedWe sincerely apologize for any inconvenience this may cause to those who have been enjoying the trial version extensively.All of us on the development team will continue pouring our thrilling “DENPA” and passion into this project so that even more people can enjoy it.We would be delighted if you could continue spreading the radio waves of Yu…
- Yunyun Unhinged Post Recruitment Campaign - 14 April 2026
⚡ 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's ending credits! Detailed Terms of Participation (Must read!!!): https://alliance-arts.co.jp/en/news-detail/2729/ ▼ Submit your unhinged post here ▼https://docs.google.com/forms/d/e/1FAIpQLSczIEHvUP4zRkdGMT72ZPK40U9bKDfS76U1eI_Aqqd8yAa3WQ/viewform?usp=sharing&ouid=103659324307389479315▼Discord▼ https://alliance-arts.heteml.net/alliance-arts.co.jp/redirect/yunyun_discord/ We look forward to your submissions!
- Release set for April 23, 9:00 PM PT / 12:00 AM ET with the price of $16.99! - 31 March 2026
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 in the final debugging phase so please wait just a little more. Follow our new X account for the latest updates!https://x.com/QDenpaReceivers/Join our Discord community to meet fellow fans and get the full experience.https://discord.gg/BNe3Mutbam Thank you for your incredible support for Yunyun Syndrome!? Rhythm Psychosis!
- Demo Update Ver.1.0.4 - 25 February 2026
Today, we have released an update for the demo.\• Added 10+ new Conspiracies• Added new event scenes• Added a new track: “winter is machine gun”• Added 10 new languages:└French/German/Polish/Russian/Portuguese (Brazil)Spanish (Spain)/Spanish (Latin America)/Italian/Turkish/ThaiFrom everyone on the development team,We will continue pouring our heart-pounding denpa energy and passion into this project so that even more players can enjoy it.We would be happy if you continue to help spread the signal of“Yunyun Syndrome!? Rhythm Psychosis” together with us!
- Demo Update Ver.1.0.3 - 5 December 2025
Today, we released an update for the demo version.Patch Notes• Added an ON/OFF toggle for Screen Shake during rhythm gameplay • Adjusted offset values for the “Princess Brave!” HARDCORE GAMER chart • Fixed visual glitches that occurred when dragging Yunyun • Relaxed judgment windows for LONG NOTES endings • Reduced audio noise on certain environmentsThe entire development team will keep pouring denpa excitement and passion into making this title something even more people can enjoy.We’d be delighted if you continue helping us spread the denpa of “Yunyun Syndrome!? Rhythm Psychosis” far and wide!
- Release Date Set for April 2026 & New Trailer Released! - 29 November 2025
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 charm. Watch as the power of love’s denpa distorts the world, leading to multiple possible endings. Be sure to check it out!Character Song "Peak Ecstasy!! Rim de Lacent☆" by Yunyun (CV: Haruko Momoi) ReleasedWatch the music video hereYunyun, a character from Execution Angel † Guilty-na, is beloved by Qtie. As a “denpa-type little devil,” Yunyun is portrayed as an antagonist in the story, but her popularity soars. Her catchphrase "Rim de Lacent☆" became widely talked about. Qtie loves Yunyun so much that she can even talk to her through the monitor.Expansion to 10 LanguagesIn line with the release announcement, we’re pleased to share…
- Creator’s Letter Vol.2 - 29 November 2025
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’ve been powering up the denpa all the more in the meantime. Our whole development team will continue working hard, so we would be grateful if you could support us until the cherry blossoms bloom. ■ Creator’s Letter Hello. This is Fuyuki Hayashi, also known as WHO YOU. I am the producer, director, and scenario writer for this title. Following the previous Creator’s Letter, we would like to once again write a message to you. The recently released demo has now surpassed 150,000 downloads, and the game's wishlist is approaching 300,000. Originally, we were thinking “If we reach 100,000 wishlists, that’ll be a gold star for us!” So rec…
- Demo Update Released! New Features Added - 29 November 2025
The demo for Yunyun Syndrome!? Rhythm Psychosis has surpassed 150,000 downloads! Today, we’ve also released a new demo update featuring several additions and improvements.Fixed bugs in the rhythm game sections (frame rate issues, etc.)Added Monthly Ranking featureAdded new difficulty level “TRYHARD”Added automatic audio latency adjustmentAdded controller supportMinor bug fixesThis demo includes about 30 minutes of content, allowing you to experience the game loop of both rhythm gameplay and the adventure parts from the very beginning of the game. While the story does not progress, you can continue playing even after clearing the demo’s available content.You can also enjoy over 10 songs, including hidden tracks, from the full version’s planned tracklist. If you haven’t played yet—or even if you’ve already tried the demo—now is the perfect time to jump in and feel the newly powered-up “Yu…
- Demo Update Ver.1.0.1 - 13 October 2025
We updated the limited-time demo version of "Yunyun Syndrome!? Rhythm Psychosis".Patch Notes:Fixed chart issues for “Princess Brave!”Fixed an issue where the game could freeze when pausing during the transition to the result screen.Fixed several minor bugs and glitches.Along with frame rate improvements, we’re planning further polish for the full release based on the valuable feedback and opinions we’ve received from players.The entire development team is pouring every ounce of denpa excitement and passion into making this title something everyone can enjoy even more.We’d be delighted if you continue spreading the "Yunyun Syndrome!? Rhythm Psychosis" denpa together with us!
- Limited-Time Demo Now Available! - 10 October 2025
Hello everyone!Thank you for taking an interest in our game.We are happy to announce the release of a limited-time playable demo!About the DemoThis special demo features roughly 30 minutes of gameplay from the early portion of Yunyun Syndrome!? Rhythm Psychosis, including both the rhythm and adventure segments of the full game loop.While the story does not progress beyond the demo range, you can continue playing after completing the main section.The full release will feature full Japanese voice acting for Qtie (VA: Nanahira) and Yunyun (VA: Haruko Momoi). Please note that some voice lines are not included in the demo version.Players can also enjoy around 10 denpa songs, including hidden tracks, during the demo period. The limited-time demo will be available from October 10 through October 31, 2025.Start your denpa descent today and feel the “Yunyun Syndrome” for yourself!Request for Fee…
