Yunyun Syndrome!? Rhythm Psychosis (2026)

- Developer
- Alliance Arts, WHO YOU
- Publisher
- Alliance Arts
- Platforms
- Windows
- Genres
- Adventure, Indie, Simulation
- Rating
- 4.6 of 5, 3,990 player ratings
- Typical playtime
- about 8.7 hours
- Where to get it
- Steam

The catalog in 3D
The same catalog has a room you can walk around in. The cat behind the counter is the AI Catbot, and they pick real games from it when you tell them what you feel like playing. Nothing is for sale, here or in there. Go in from here and this game is already out on the counter, with more like it waiting on the shelf next to it.
How it feels
A chaotic, denpa-fueled rhythm adventure where you lose control to spread internet brain rot.
rhythmdenpabrain rotchaoticdarkly humorousadventuresimulationhigh energy
What players say
Players praise the music, art, and unhinged storytelling, but the English translation is widely condemned for inserting Zoomer slang, with many recommending fan patches. The game is a 4-key rhythm game with a thin song list and DLC complaints, though its denpa aesthetic and character appeal create a cult following.
Screenshots






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