Yunyun Syndrome!? Rhythm Psychosis Demo
| App ID | 4074930 |
| App Type | Demo |
| Store Name | ゆんゆん電波シンドローム Demo |
| Developer | Alliance Arts, WHO YOU |
| Publisher | Alliance Arts |
| Franchise | Alliance Arts |
| Supported Systems | Windows |
| Technologies | Unity Engine |
| Last Changenumber | 31744337 |
| Last Record Update | 18 October 2025 – 14:55:29 UTC ( |
| Release Date | 10 October 2025 – 06:50:17 UTC ( |
| Parent App | Yunyun Syndrome!? Rhythm Psychosis (2914150) |
“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.
Additional Information
This demo is excluded from Steam Family Sharing because: This content type cannot be shared
| Developer | Alliance Arts | |||||||||||||||||||
| ReleaseState | released | |||||||||||||||||||
| Publisher | Alliance Arts | |||||||||||||||||||
| Exclude from family sharing (exfgls) | 6 (This content type cannot be shared) | |||||||||||||||||||
| Store Release Date | 10 October 2025 – 06:50:17 UTC ( |
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| osarch | empty string | |||||||||||||||||||
| Primary Genre | Adventure (25) | |||||||||||||||||||
| Store Genres | Adventure (25), Indie (23), Simulation (28) | |||||||||||||||||||
| Steam Release Date | 10 October 2025 – 06:50:17 UTC ( |
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| Store Asset Modification Time | 8 October 2025 – 02:52:15 UTC ( |
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| library_assets |
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| osextended | empty string | |||||||||||||||||||
| name_localized |
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| Is free on the store? | Yes | |||||||||||||||||||
| review_score | 8 | |||||||||||||||||||
| review_percentage | 86 | |||||||||||||||||||
| Detected Technologies (?) | Unity Engine, SteamworksNET SDK, UnityBurst SDK, cURL SDK | |||||||||||||||||||
| controllertagwizard | Yes | |||||||||||||||||||
| First seen on SteamDB | 30 September 2025 – 09:04:31 UTC ( |
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Supported Languages
| 5 Languages | Interface | Full Audio | Subtitles |
|---|---|---|---|
| English | Yes | Yes | |
| Simplified Chinese | Yes | Yes | |
| Traditional Chinese | Yes | Yes | |
| Japanese | Yes | Yes | Yes |
| Korean | Yes | Yes |
Categories
Assets
Load all asset images
| trailer_name | OPENING ANIMATION EN |
| trailer_category | 3 |
| microtrailer ↴ | |
| video/webm | 4074930/49746209/88e4884610938502d6a4851918b594593db8edfb/1759487149/microtrailer.webm |
| video/mp4 | 4074930/49746209/88e4884610938502d6a4851918b594593db8edfb/1759487149/microtrailer.mp4 |
| adaptive_trailers ↴ | |
| dash_av1 | 4074930/49746209/88e4884610938502d6a4851918b594593db8edfb/1759487149/dash_av1.mpd |
| dash_h264 | 4074930/49746209/88e4884610938502d6a4851918b594593db8edfb/1759487149/dash_h264.mpd |
| hls_h264 | 4074930/49746209/88e4884610938502d6a4851918b594593db8edfb/1759487149/hls_264_master.m3u8 |
| screenshot_medium | 257211279/4f355e529cc9f8aeb270f87bf4d6638932c8db70/movie_600x337.jpg |
| screenshot_full | 257211279/4f355e529cc9f8aeb270f87bf4d6638932c8db70/movie_full.jpg |
| all_ages | true |
| is_highlight | true |
| timestamp | 10 October 2025 – 06:50:35 UTC |
| trailer_name | Special Transmission Trailer |
| trailer_category | 3 |
| microtrailer ↴ | |
| video/webm | 4074930/1365525363/9cbee367009c9896dc9dc6e2a2fafb0007e1330a/1759487170/microtrailer.webm |
| video/mp4 | 4074930/1365525363/9cbee367009c9896dc9dc6e2a2fafb0007e1330a/1759487170/microtrailer.mp4 |
| adaptive_trailers ↴ | |
| dash_av1 | 4074930/1365525363/9cbee367009c9896dc9dc6e2a2fafb0007e1330a/1759487170/dash_av1.mpd |
| dash_h264 | 4074930/1365525363/9cbee367009c9896dc9dc6e2a2fafb0007e1330a/1759487170/dash_h264.mpd |
| hls_h264 | 4074930/1365525363/9cbee367009c9896dc9dc6e2a2fafb0007e1330a/1759487170/hls_264_master.m3u8 |
| screenshot_medium | 257211287/321a4f44c084380222089420f6fbf3a34c34a262/movie_600x337.jpg |
| screenshot_full | 257211287/321a4f44c084380222089420f6fbf3a34c34a262/movie_full.jpg |
| all_ages | true |
| is_highlight | true |
| timestamp | 10 October 2025 – 06:50:33 UTC |
Steam charts
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- 235 players right now
- 335 24-hour peak
- 1,227 all-time peak
10 October 2025
SteamDB.info
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Store data
Monthly players breakdown
Initializing Steam charts…
| Month | Peak | Gain | % Gain | Average | Avg % Gain |
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User reviews history
How many players are playing Yunyun Syndrome!? Rhythm Psychosis Demo right now on Steam?
Steam player counter indicates there are currently 235 players live playing Yunyun Syndrome!? Rhythm Psychosis Demo on Steam.
Yunyun Syndrome!? Rhythm Psychosis Demo had an all-time peak of 1227 concurrent players on 10 October 2025.
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