
“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.
Modeled estimate, not a reported figure. How we estimate →
Prices
Each in the currency that store quoted — not converted: the gap between two rows is the publisher's pricing, not an exchange rate.
Every market we collect.
About
High and vibin’ with denpa songs, we’ll corrupt the entire Internet! Hehe. all we need is a bit of otaku love, that’s all.
This is a rhythm-adventure game where you play as a hikikomori (shut-in) girl who’s high on denpa songs. Become Yunyun-brained and lose all self-control to anonymously post on social media and destroy the world with your Yunyun brain rot.
Have a Doki-Doki experience with over 30 denpa songs and multiple endings.
Q. Why did she become a hikikomori?
Q. How does anonymous online posting lead to world destruction?
Q. Does a happy ending exist for a degenerate otaku?
The answers to those “Q” s lie at the convergence of insanity and denpa psychosis.
Now, put those headphones on and become ill with Yunyun Syndrome!? Rhythm Psychosis.
Get high on denpa songs and spread your heartful psychosis to everyone else!
・Qtie (CV:Nanahira)
The main character. A hikikomori. She suffered too much irl that she’s become a little (very) fuzzy in the head. Her obsessive love for the fictional character “Yunyun” is for sure an illness. Her overly “high” state from overdosing denpa songs causes her to propagate Yunyun love. Will there really be a happy end for such a degenerate otaku?
・Yunyun (CV:Haruko Momoi)
A fictional character that loves Qtie. A very much angelic devil. She will speak to Qtie through the monitor screen. Whilst the truth is unknown, most likely, she is just a figment of Qtie's imagination. It’s joever for her.
Q. What is a “denpa” song?
It is a genre of music that is intentionally strange and catchy. All playable songs in this game are denpa songs.
Many popular denpa songs such as “it’s a cherry kissing explosion” (Sakuranbo Kiss) and many more are featured!
▶Original Songs
1.Denpa-tic Imaginary Girl "Q"
2.Peak Ecstasy!! Rim de Lacent☆
3.YUNYUN HARDCORE
4.???
5.???
▶Licensed Songs
6.Achichi na Natsu no Monogatari
7.Change my Style~Anata gonomi no Watashi ni~
8.Cirno's Perfect Math Class
9.CosmicKING☆sens@tion!!!!!!!!
10.Dakko Shite Gyu!
11.Gacha Gacha Cute Figu@mate
12.INTERNET OVERDOSE
13.INTERNET YAMERO
14.Kanbu de Tomatte sugu Tokeru Kyoki no Udongein
15.Kyururun Kiss de Janbo♪♪
16.Love Cheat!
17.Marisa stole the precious thing
18.Mighty Heart ~Aru Hi no Kenka, Itsumo no Koigokoro~
19.Miko Miko Nurse - Ai no Theme
20.Nee,...shiyou yo!
21.PETTAN PETTAN TSURUPETTAN
22.Princess Brave!
23.Princess Bride!
24.Raspberry
25.sakuranbokissu~bakuhatsudamo~n~
26.Senno Sakushu Tora no Maki
27.Shukusei!! Loli Kami Requiem
28.summer is machine gun
29.true my heart
30.winter is machine gun
Do you like cute anime girls? Do you like strange and catchy denpa songs? Do you wish for the death of this ♡♡♡♡ed up world? Great! Add “Yunyun Syndrome!? Rhythm Psychosis” to your WishList and stay updated for release information and updates!
Updates
Build ids and update times come straight from Steam's PICS — the same source SteamDB reads. Patch history grows as we record new builds.
Engagement
Reviews
Themes across 482 recent reviews and how positive each mention is. A keyword signal, not full sentiment analysis.
Reviews
this game has been super fun. All the little hidden secrets and events were super cool, and the timing windows for each difficulty are pretty forgiving for a rhythm game. Experiencing all the possible endings with this delulu queen has been a blast. easily one of my fav rhythm games of all time! Rim de Lacent!!!!
I LOVE THIS GAME!!!!! All I do now is chud around and play yunyun on my computer.
Juegazo donde el apartado de "juego de ritmo", no es esencial del todo para la historia o desarrollo del propio juego, así si eres una persona que no es muy hábil en éste genero de juegos en particular pues, no tendrás problemas para pasarla bien (sin mencionar que el margen de error es muy grande y básicamente puedes spamear botones y es válido). Recomendadisimo si te gustan las canciones tipo Denpa y/o de anime + Qtie es lindísima a pesar de ser una hikkikomori a nivel extremo En resumen: +10/10 porque el equipo de traducción es increíble haciendo su trabajo
Media

Related
Related
Price dynamics, follower growth, revenue and sales trajectories with interactive tooltips
This and every other Pro feature is free until October 20, 2026. A free account is all it takes.
Genres
Stats
All-time low is the lowest price we've recorded for this game since we started tracking it.
Languages: English, Simplified Chinese, Japanese*, Traditional Chinese, Korean, French, German, Portuguese - Brazil, Polish, Russian, Italian, Spanish - Spain +3 more
Hours played at review time, across 482 reviews with recorded playtime.
positive critical· bar length = how often the theme comes up
embrace our lord and savior yunyun and get all the dokidokis and embrace denpa
просто рай
刷心动晕晕领袖值刷晕了,,,怎么这么难刷晕,,,要变成小Q了晕 在我刷出全成就前先给差评,,,,,太折磨了
電波ソングに絞った音ゲーという中々なかったジャンルの音ゲーってところは高評価 ストーリーとかキャラクターとかもこだわってるの感じる ただ、ジャンル的に難しいのを加味してもさすがにもうちょい曲数は欲しい!
TLDR: Great game, highly recommend it By itself Yunyun Syndrome is not that long, as of writing this review I have completed one of the main endings, so I can't say much about anything harder to find in a casual playthrough. Pros: - Cute art style, really nice to look at - For how short the game is, the story is really great; despite all the brainrot/denpa stuff, it still manages to make you feel compassionate for Qtie's situation. The ending also fits really well with the overall narration of this game, [spoiler]but that might also be the case because I'm a sucker for stories about facing reality instead of running away.[/spoiler] - The rhythm game is really enjoyable, also it's quite forgiving for beginners considering how big the window is for getting perfect hits. Cons: - My main problem with the game is that there isn't ultimately a big selection of songs, even in DLCs like the one for Touhou songs there's only like 5 songs. So ultimately I mainly played just a few I liked, like the main theme, Yunyun's theme, as well as remixes from Touhou and Loli God Requiem (粛清!!ロリ神レクイエム). - Song star rating was really inconsistent, there were songs rated at 9 stars that were much easier than songs at 5 or 6, but this isn't really that big of an issue, just annoying at times. Overall, this is an easy recommend if you're into rhythm games or denpa culture. It's not the longest experience and the song list could be bigger, but the charm, art, and story more than make up for it.
The gameplay at its core is fun with good songs and animations but the writing is incredibly bad and pandering to milenials the story is also underwhelming and uninteresting. Many blame the poor writing on the translation but it seems much deeper ingrained than that. that alongside the lack of a way to add more songs like in other rhythm games through community features it is generally not worth it to buy as though the songs and the maps are generally good and thematically work well they are very limmited and this game locks a large amount of songs behind DLC that in my opinion is incredibly overpriced.
리듬 게임을 이걸로 입문했어융 방구석에서 뇌빼고 하기 좋아융 전파송+니디 걸 오버도즈+니코동 감성+천천천국지옥국 일러스트를 좋아한다면 추천해융
Active players
Estimated daily and monthly active players (DAU/MAU) modeled from peak concurrency.
Players by region
Where this game's players are, estimated from review languages.
Players also reviewed
The games this title's players most often review too — audience affinity.
Related
| Game | Estimated lifetime revenue | Reviews | Review score | Price |
|---|---|---|---|---|
| $21.4K | 40 | 92% | $14.99 | |
| $430.1K | 589 | 95% | $24.99 | |
| $212.7K | 201 | 99% | $29.99 | |
| $149.5K | 1K | 98% | $4.99 | |
| $24.3K | 133 | 90% | $11.99 | |
| $10.6K | 37 | 97% | $9.99 |
Related
| Game | Estimated lifetime revenue | Reviews | Review score | Price |
|---|---|---|---|---|
| $2.4M | 4.4K | 91% | $14.99 | |
| $2.4M | 10.7K | 86% | $14.99 | |
| $2.4M | 5.6K | 88% | $19.99 | |
| $2.4M | 10.1K | 96% | $12.99 | |
| $2.4M | 6.1K | 63% | $21.24 | |
| $2.4M | 6.8K | 91% | $9.99 |