“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. Summary: IGDB
Mind Score
Fair to the player
Respect
82
Stimulation
moderate
Unknown lengthStop anytime
Watch out for
Loot boxes
- Loot boxes detected on the Steam page
High confidence · 28 Sept 2026 · Rules-based estimate from the Steam store, player reviews and PEGI/ESRB descriptors. Not a substitute for the official rating or your own judgement. Tap a label to see the evidence.