Yunyun Syndrome Rhythm Psychosis

Yunyun Syndrome Rhythm Psychosis is a denpa-style rhythm visual novel with 49 Steam achievements and a large branching ending set — 19 of those achievements are conspiracy IF endings on their own. The game combines rhythm mini-games with psychological horror elements, conspiracy storylines, and character route branching through the Q † CHANNEL transmission system.

The developer has never published an ending count. What is verifiable: Steam's achievement list for appid 2914150 contains 19 conspiracy-ending rows plus the true-ending, prologue and hidden chains, all with live unlock rates, and our route map is built from that dataset rather than from a headline number. The first playthrough covers the prologue and basic endings. The second run focuses on stat farming (DOKIDOKI/HYPE/YUNYUN to 999%) and conspiracy IF endings. The third run unlocks the True Ending, DENPA TRANSMISSION, and the final Patootie boss fight.

Three runs is the floor, four is the realistic plan. Playthrough 1: prologue plus the free high-rate rows. Playthrough 2: the conspiracy sweep, high unlock rates first. Playthrough 3: the ending chain — YUN DIE, Yunyun Syndrome, DONIDEMONARE — and Engage Link on that same save. Run 4 exists because the tail does not come cheap: the three 999% meter endings all sit between 8.6% and 9.1% ownership, so nobody collects them incidentally. Our achievement guide rebuilds the full route around those live rates.

Three documented ones are worth planning around: pushing DOKIDOKI, HYPE or YUNYUN to its 999% ending commits that save to a bad ending, the diary pages have a reading-order claim attached to them, and accepting Yunyun's offer at the final choice ends the DONIDEMONARE route on that file. None of them show a warning prompt, which is why every route guide here says to save in a fresh slot before an irreversible beat. The popular fourth warning, filling every save slot, has no documented slot count behind it.

DENPA TRANSMISSION is the game's meta-narrative layer that unlocks after certain conditions are met in previous playthroughs. It reveals the true story behind Q † CHANNEL, introduces the Patootie boss encounter, and leads to the DONIDEMONARE route — the key to the True Ending and the final Engage Link achievement. What the community publishes as a DENPA threshold ladder is not in any patch note, and Ver. 1.0.7 lowered the DENPA required to reach 100%, so measure your own per-clear gains rather than trusting a fixed table.