▼ Platform
Steam

▼ Application Period
Until Wednesday, October 1, 2025 (JST)

▼ Test Period
Scheduled for early October 2025, with a planned duration of 3 days.
Exact dates will be announced later, and the start/end times may change depending on operational requirements.

▼ Eligibility
・Participants must have a PC capable of running Steam and this game
・Participants must have joined the official Discord server

▼ Steps to Join
Step 1: Join the official “Yunyun Syndrome!? Rhythm Psychosis Beta Test” server on Discord
　Invite link: https://alliance-arts.heteml.net/alliance-arts.co.jp/redirect/yunyun_discord/

Step 2: After agreeing to the Beta Test Terms, please complete and submit the required form by October 1.
　Beta Test Terms: https://alliance-arts.co.jp/en/news-detail/2229/

Step 3: A product code will be sent to the email address registered in the form before the test begins.

Step 4: On Steam, go to Games > Activate a Product on Steam, and activate “Yunyun Syndrome!?” with the provided product code.

Step 5: After playing, please submit your feedback using the dedicated form available in the Discord server.

We sincerely look forward to your participation!