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Lobbies · prototype · v0.1 · made for gamers
Lobbies · prototype · v0.1 · made for gamers
Released April 23, 2026 · WSS playground
“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.
Steam · 4K reviews · 91% positive
The Yunyun Syndrome!?: Rhythm Psychosis Lobby
Patch Notes Ver. 1.1.0
▶ Update to Ver. 1.1.0· Expanded the sort and search features for “Songs”· Added a feature that allows note speed to be adjusted during rhythm game play· Added per-song audio sync adjustment, also known as local offset· Added more areas that can be controlled using only the keyboard· Adjusted volum…
100,000 copies sold!
Total sales of the main game "Yunyun Syndrome!? Rhythm Psychosis" have surpassed 100,000 copies!To everyone who tuned in to our denpa. Thank you from the bottom of our hearts!
Patch Notes Ver. 1.0.9
▶ Update to Ver. 1.0.9· Adjusted special dialogue to play on the title screen on specific dates· Adjusted the HARDCORE GAMER and NORMAL ratings, which were internally identical, by unifying all ratings except DEGENERATE (NORMAL, HARDCORE GAMER, TRYHARD) and correcting the description text in HELP・U…
via Steam
