Yunyun Syndrome!? Rhythm Psychosis is a rhythm adventure where players take on the role of a hikikomori girl obsessed with dem songs. Lose yourself in the rhythm as the main character anonymously posts on social media and destroys the world with her music-fueled mind. The game combines the Doki-Doki experience with over 30 dem songs and multiple endings.
Dempas is a deliberately bizarre and catchy musical genre. All songs available for play are written in this style. The game features many popular dempas.
The Yunyun Syndrome!? Rhythm Psychosis demo has surpassed 150,000 downloads. Additionally, an update has been released for the demo . New features include an online high score table, additional difficulty levels, automatic audio sync adjustment, and general improvements.