Back in September, Alliance Arts and WHO YOU announced winter release plans for “brainrot pop” game Yunyun Syndrome!? Rhythm Psychosis, but it’s going to need a little more time before it’s ready for launch.

According to the latest update, WSS playground and WHO YOU’s rhythmic adventure is now set to launch in April 2026. In the meantime, you can check out a demo on Steam and watch the second trailer below.

Yunyun Syndrome!? Rhythm Psychosis 2nd Trailer

READ: Yunyun Syndrome!? Rhythm Psychosis Hits Steam This Winter

Prior to this, a playable version was on display at Tokyo Game Show 2025. Here’s the game’s official description: 

Nothing like a little bit of anonymous online slopposting to destress from the day’s troubles. However, Qtie’s preferred escape from reality has morphed her into a full-blown recluse who dissociates to the tunes of brainrot pop.

Her unhinged posting habits are all to capture the attention of “Yunyun” — an online personality who might be a figment of Qtie’s imagination. But you know what they say:  “better to have loved and lost your mind than to have never loved at all”. That’s how the saying goes, right?

Crank up the volume and spread the love of Yunyun all over the internet to the tunes of 30+ hypnotic denpa songs. Convince other chronically online web users to become fellow fans by pushing positive posts across social media, and clack out counterarguments against Yunyun’s biggest online haters.

Source: Gematsu