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Buy Yunyun Syndrome!? Rhythm Psychosis Steam Key

Q: Why is the Steam Key of Yunyun Syndrome!? Rhythm Psychosis safer than the account format?

The Steam Key format is what we always recommend due to its ease of use and higher security compared to any other format. You just need to redeem the key in your account to download Yunyun Syndrome!? Rhythm Psychosis to your game library. The account format requires more complicated steps and is more prone to errors during activation.

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Yunyun Syndrome!? Rhythm Psychosis Steam Key: compare prices (August 2026)

A Yunyun Syndrome!? Rhythm Psychosis Steam Key — also known as a CD Key or digital code — is the official activation code you redeem on Steam and keep in your library permanently. From €5.29 (-57%) at Kinguin, 57% below the €12.25 Steam price · 11 verified stores, 19 offers in stock · Updated 01h 14min ago.

Steam Key

Cheapest

€6.01 €5.29 -57% Save €7 vs Steam View deal

Gocdkeys12

-12%

Copied!

Steam Key

Official store

€12.25 View deal

No code available

See 15 keys from €5.29

Historical prices

Medium price

Current minimum price

Yunyun Syndrome!?… prices: 5-month price history →

Official stores are authorized distributors, and while their prices may be higher than Key stores, their reliability is 100%.

“Choose it if you don’t mind the price difference”

Key stores are resellers and marketplaces, which is why they are usually cheaper than official stores. We only show the best ones, so you can rest assured. Plus, we offer our guarantee against any issues.

“Choose it if you’re looking for a great discount”

Editions Standard

Format Steam Key Steam Gift

Global EU US UK

Official stores 1 stores Hide Accounts

Resellers

No payment fees With payment fees Basic price Fees incl.

Promoted store

Difmark Digital Keys 4.1 (14.2k)

Coupon

Gocdkeys -16%

Copied!

€7.65 €6.43

Store Difmark Digital Keys

Region Global

Product type Steam Key

Edition Standard

Fees +€0.54

HRKGame
Kinguin
Driffle
K4G
Gamivo
Eneba
Gameboost
Cdkeys Com
Instant Gaming
G2A

HRKGame 4.2 (29.7k)

€6.01 €5.29

Product type Steam Key

Edition Standard

Fees +€1.24

Kinguin 4.6 (120.4k)

Subscription from 2.99€/month

€5.88 €5.29 How to get this priceHow to get

Store Kinguin

Region Global

Product type Steam Key

Edition Standard

Fees +€0.65

Driffle 4.4 (9.2k)

Subscription from 4.99€/month

€5.90 €5.31

Product type Steam Key

K4G 4.3 (17.6k)

€6.33 €5.44

Product type Steam Key

Edition Standard

Fees +€0.70

Gamivo 3.8 (49.7k)

Subscription from 2.01€/month

€6.41 €6.28 How to get this priceHow to get

Store Gamivo

Region Global

Product type Steam Key

Eneba 4.4 (312.9k)

€6.35 €5.72 How to get this priceHow to get

Store Eneba

Region Global

Product type Steam Key

Edition Standard

Fees +€0.49

Gameboost 4.4 (15.1k)

€7.47 €6.50

Product type Steam Key

Edition Standard

Fees +€0.48

Cdkeys Com 4.8 (224.4k)

Product type Steam Key

Edition Standard

Fees -

Driffle 4.4 (9.2k)

Subscription from 4.99€/month

€7.58 €6.82

Product type Steam Key

Eneba 4.4 (312.9k)

€7.91 €7.12 How to get this priceHow to get

Store Eneba

Region Europe

Product type Steam Key

Edition Standard

Fees +€0.61

Instant Gaming 4.7 (833.8k)

No code available

€8.09

Store Instant Gaming

Region Global

Product type Steam Key

Edition Standard

Fees +€0.16

G2A 4.0 (346.2k)

No code available

€8.71 How to get this priceHow to get

Store G2A

Region Global

Product type Steam Key

G2A 4.0 (346.2k)

€9.98 €7.49 How to get this priceHow to get

Store G2A

Region Europe

Product type Steam Key

K4G 4.3 (17.6k)

€15.38 €13.23

Product type Steam Gift

Edition Standard

Fees +€1.69

Kinguin 4.6 (120.4k)

Subscription from 2.99€/month

€15.25 €13.73 How to get this priceHow to get

Store Kinguin

Region Global

Product type Steam Gift

Edition Standard

Fees +€1.68

Gamivo 3.8 (49.7k)

Subscription from 2.01€/month

€16.76 €13.74 How to get this priceHow to get

Store Gamivo

Region Global

Product type Steam Gift

Edition Standard

Fees +€2.35

G2A 4.0 (346.2k)

No code available

€16.36 How to get this priceHow to get

Store G2A

Region Europe

Product type Steam Gift

G2A 4.0 (346.2k)

€19.29 €14.47 How to get this priceHow to get

Store G2A

Region Global

Product type Steam Gift

Edition Standard

Fees +€0.06

Official stores

Steam

Steam 1.8 (3.7k)

Product type Steam Key

Edition Standard

Fees -

About Yunyun Syndrome!? Rhythm Psychosis

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.

⚡ Anonymously post online and infect the whole world with Yunyun-brain!

Get high on denpa songs and spread your heartful psychosis to everyone else!

⚡Characters!

・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.

⚡About DenpaSongs!

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

♥Listen up!

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!

How much does Yunyun Syndrome!? Rhythm Psychosis for PC cost right now?

Yunyun Syndrome!? Rhythm Psychosis for PC starts at €5.29 at Kinguin, a Steam key, which is 57% under the €12.25 it costs on the official store.

Of every month we have on record, this is the cheapest.

That €5.29 already includes the AUGGOC10 coupon, so apply it at checkout or the store will show you a higher price.

With 19 offers across 11 stores there is enough competition for the price to move, so the gap between the cheapest and the rest is worth checking before you buy.

Steam Key

€5.29

with coupon ~~€5.88~~

Stays on your account for good

Steam Gift

€13.23

with coupon ~~€15.38~~

Pricier and more likely to fail

Is it worth buying the Steam Key for Yunyun Syndrome!? Rhythm Psychosis now or waiting?

That €5.29 key has never had a real discount yet.

The Steam Key has been on sale for 4 months and its biggest drop has been 6%.
11 stores sell the Steam Key at the same time and the price still does not move: competition has not been enough to drag it down here.
Not counting today, the lowest we have recorded for the Steam Key across 119 days is €5.88, and today it sits exactly there.

If you are in no rush, it is worth waiting for a sale. We have seen it at €5.88 and we will tell you the day it drops.

Worked out from 1,149 daily records of the Steam Key for Yunyun Syndrome!? Rhythm Psychosis across 12 stores. See the full price history.

The price does not include each store's payment fees. The percentage is measured on the store price, without coupons, because that is how we record the history. The analysis only counts Key offers. Shared accounts, Steam Gift and physical editions stay out, because they are not the same product and their prices move differently.

Which Yunyun Syndrome!? Rhythm Psychosis format should you buy?

By format: Steam Key from €5.29 and Steam Gift from €13.23.

Can you activate Yunyun Syndrome!? Rhythm Psychosis in US?

15 of the 19 offers work on US — the Global ones plus the ones issued for your own region.

Most common FAQs when buying Yunyun Syndrome!? Rhythm Psychosis for PC in digital format:

It is a key that will allow you to download the game Yunyun Syndrome!? Rhythm Psychosis on your PC from official download platforms.

As of 23/08/2026, in United States, the best price we have found in our selection of online stores that include the key for Yunyun Syndrome!? Rhythm Psychosis on PC is €5.29.

The Steam Key format is what we always recommend due to its ease of use and higher security compared to any other format. You just need to redeem the key in your account to download Yunyun Syndrome!? Rhythm Psychosis to your game library. The account format requires more complicated steps and is more prone to errors during activation.

The only issue we’ve encountered in 13 years is receiving a duplicate key that doesn’t work. In that case, simply contact the store where you bought Yunyun Syndrome!? Rhythm Psychosis, and they will provide a new key. You can also contact us, and we’ll help you out.

Delivery times vary by store. For example, in the case of Instatgaming, Eneba, G2a, or Kinguin, delivery is usually instant or takes just a few minutes. These stores rarely delay game deliveries.

Other stores may take 30–40 minutes depending on game availability. On release days, delivery times may be slightly longer.

If you notice an unusually long delay, contact the store or us, and we’ll resolve it as quickly as possible.

At Gocdkeys, we only list the most well-known stores that have passed our quality checks. One of the most important factors is good customer support, and all listed stores offer it.

There have been occasions when those services were overwhelmed, which is why we also offer 24/7 customer support to help resolve any issues or questions.

In any case, we always offer a 100% guarantee, so you won’t have any problems, and if you do, we’ll resolve them as soon as possible.

Need more help? Use our FAQs.

Gocdkeys - Transparency and credibility

At GOCDKEYS we display real prices from 49 verified stores. Some links may be affiliate links, which help us keep the service running at no extra cost to users. Prices and conditions are always exactly the same as those offered by the store. All stores go through our own store verification methodology, so you can buy with complete confidence.

If you have doubts before buying, we explain why CD keys are legal and break down the most common myths and facts about digital games, so you can make your decision with clear and up-to-date information.

More than 4.5M users in 14 years have trusted us to find the best deals — Trustpilot 4.1/5 ★
We compare 49 verified stores where we find the best deals for gamers
24/7 support to help you with any issues in your purchases
We track prices every 2 hours and sort by final cost - Last update: 2026-08-23 10:05:20

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Yunyun Syndrome!? Rhythm Psychosis

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About the game

Release date

23 Apr 2026

Genre

Adventure Indie Simulation Psychological Horror Visual Novel Rhythm Music

Modes

Singleplayer

Setting

2D Female Protagonist Cute Multiple Endings Anime Funny Psychological

Languages

English Chinese (Simplified) Japanese* Chinese (Traditional) Korean French German Portuguese (Brazil) Polish Russian Italian Spanish (Spain) Spanish (Latin America) Thai Turkish

* languages with full audio