Happy Nuclear
| App ID | 3678870 |
| App Type | Game |
| Developer | Hi-Develop |
| Publisher | Hi-Develop |
| Supported Systems | Windows |
| Technologies | Godot Engine |
| Last Changenumber | 31085233 |
| Last Record Update | 12 September 2025 – 18:27:30 UTC ( |
| Release Date | 10 June 2025 – 02:09:40 UTC ( |
Happy Nuclear is an evidence-based investigation game where players act as detectives to prevent a disaster. They analyze interconnected case information on an investigation board, primarily using old CCTV and access logs. Cases link together at the end, and each replay introduces changes.
Additional Information
| Developer | Hi-Develop | |||||||||||||||||||
| community_visible_stats | Yes | |||||||||||||||||||
| ReleaseState | released | |||||||||||||||||||
| Publisher | Hi-Develop | |||||||||||||||||||
| Store Release Date | 10 June 2025 – 02:09:43 UTC ( |
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| osarch | 64 | |||||||||||||||||||
| community_hub_visible | Yes | |||||||||||||||||||
| Primary Genre | RPG (3) | |||||||||||||||||||
| Store Genres | Casual (4), Indie (23), RPG (3), Simulation (28) | |||||||||||||||||||
| Steam Release Date | 10 June 2025 – 02:09:40 UTC ( |
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| Store Asset Modification Time | 12 June 2025 – 05:05:09 UTC ( |
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| library_assets |
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| osextended | empty string | |||||||||||||||||||
| review_score | 7 | |||||||||||||||||||
| review_percentage | 87 | |||||||||||||||||||
| Detected Technologies (?) | Godot Engine | |||||||||||||||||||
| controllertagwizard | Yes | |||||||||||||||||||
| First seen on SteamDB | 17 April 2025 – 08:16:00 UTC ( |
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Supported Languages
| 2 Languages | Interface | Full Audio | Subtitles | Achievements |
|---|---|---|---|---|
| English | Yes | Yes | Yes | |
| Thai | Yes | Yes |
Tags
Categories
Single-player
Steam Achievements
Steam Cloud
Steam Leaderboards
Family Sharing
Profile Features Limited
Assets
Load all asset images
| trailer_name | 1st Teaser |
| trailer_category | 2 |
| trailer_480p ↴ | |
| video/webm | 257134506/movie480_vp9.webm |
| video/mp4 | 257134506/movie480.mp4 |
| trailer_max ↴ | |
| video/webm | 257134506/movie_max_vp9.webm |
| video/mp4 | 257134506/movie_max.mp4 |
| microtrailer ↴ | |
| video/webm | 3678870/883529/c3975d35e352b29aa22fb5d483d48246d449a9cb/1750399480/microtrailer.webm |
| video/mp4 | 3678870/883529/c3975d35e352b29aa22fb5d483d48246d449a9cb/1750399480/microtrailer.mp4 |
| adaptive_trailers ↴ | |
| dash_av1 | 3678870/883529/c3975d35e352b29aa22fb5d483d48246d449a9cb/1750399480/dash_av1.mpd |
| dash_h264 | 3678870/883529/c3975d35e352b29aa22fb5d483d48246d449a9cb/1750399480/dash_h264.mpd |
| hls_h264 | 3678870/883529/c3975d35e352b29aa22fb5d483d48246d449a9cb/1750399480/hls_264_master.m3u8 |
| screenshot_medium | 257134506/10b836abce920c140495b0444e9b57821e584f73/movie_600x337.jpg |
| screenshot_full | 257134506/10b836abce920c140495b0444e9b57821e584f73/movie_full.jpg |
| all_ages | true |
| is_highlight | true |
| timestamp | 5 May 2025 – 08:20:07 UTC |
Achievements
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