Yunyun Syndrome!? Rhythm Psychosis — patch notes and updates
Stored observation / content update:
Dated developer announcements recorded from Steam. Open the source for the complete update.
| Update | Date | Excerpt / source |
|---|---|---|
| Patch Notes Ver. 1.1.0 | 2026-06-30 | ▶ 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 |
| 100,000 copies sold! | 2026-06-19 | 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 | 2026-06-01 | ▶ 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 |
| Notice of Demo Version Distribution End | 2026-05-01 | 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! | 2026-04-30 | 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 o |
| Patch Notes Ver.1.0.7 | 2026-04-27 | ▶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 | 2026-04-25 | 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 |
| Regarding the English Localization Issues and Update Timeline | 2026-04-25 | 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 localizati |
| Notice of Upcoming Demo Update (Full-Version Specs) & Pre-Launch AMA | 2026-04-22 | ▶ 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 th |
| Yunyun Unhinged Post Recruitment Campaign | 2026-04-14 | ⚡ 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 |
| Release set for April 23, 9:00 PM PT / 12:00 AM ET with the price of $16.99! | 2026-03-31 | 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 | 2026-02-25 | 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 | 2025-12-05 | 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! | 2025-11-29 | 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, |
| Creator’s Letter Vol.2 | 2025-11-29 | 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 |
| Demo Update Released! New Features Added | 2025-11-29 | 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 availa |
| Demo Update Ver.1.0.1 | 2025-10-13 | 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 Ps |
| Limited-Time Demo Now Available! | 2025-10-10 | 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 |
| Original Theme Song by KOTOKO × Opening Animation Revealed! | 2025-09-05 | The theme song and opening animation for Yunyun Syndrome!? Rhythm Psychosis are now live!So, put on your headphones and start receiving those Yunyun waves right now.This is a rhythm-adventure game where a hikikomori girl gets high on denpa songs, posting her lovely nonsense online until the entire world goes Yunyun-crazy. Yunyun Syndrome!? Rhythm Psychosis is set to launch this winter.Stay tuned and keep your heart racing for the release and more updates!＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝♪「Denpa-tic Imaginary Girl ""Q""」Lyrics / Composition / Arrangement: MARON Vocals: KOTOKO Guitar: Hiroto Kobayashi Mixing / Mastering: ShibayanIllustration / Animation: odyk |
| Announcing Closed Beta Test! | 2025-09-04 | We’re excited to announce that a Closed Beta Test will be held!Applications to join the test will be accepted via our official Discord server.Join the official “Yunyun Syndrome!? Rhythm Psychosis” Discord and stay tuned for more information!Whether you want to participate as a beta tester, chit chat, or just lurk, you’re more than welcome! And of course, feel free to chat about your love for Yunyun Syndrome!? Rhythm Psychosis too.We hope to see you!Join the official Yunyun Syndrome!? Rhythm Psychosis Discord server here:https://alliance-arts.heteml.net/alliance-arts.co.jp/redirect/yunyun_discord/ |