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.
Steam price history
Current Price
$4.99
Lowest Recorded Price
$3.99 at -20%
29 September 2025
| Currency | Current Price | Converted Price | Lowest Recorded Price | ||
|---|---|---|---|---|---|
 U.S. Dollar |
$4.99 | $4.99 | $3.99 | $3.99 at -20% | |
 Russian Ruble |
200 ₽ | $2.45 | -50.75% | $1.96 | 160 ₽ at -20% |
 Kazakhstani Tenge |
1500₸ | $2.78 | -44.26% | $2.22 | 1200₸ at -20% |
 Vietnamese Dong |
73500₫ | $2.79 | -44.08% | $2.23 | 59000₫ at -20% |
 Indian Rupee |
₹ 250 | $2.84 | -42.97% | $2.27 | ₹ 200 at -20% |
 Indonesian Rupiah |
Rp 47499 | $2.86 | -42.63% | $2.29 | Rp 37999 at -20% |
 Ukrainian Hryvnia |
124₴ | $2.96 | -40.57% | $2.36 | 99₴ at -20% |
 South African Rand |
R 52.00 | $2.98 | -40.14% | $2.38 | R 41.60 at -20% |
 LATAM - U.S. Dollar |
$2.99 | $2.99 | -40.08% | $2.39 | $2.39 at -20% |
 MENA - U.S. Dollar |
$2.99 | $2.99 | -40.08% | $2.39 | $2.39 at -20% |
 South Asia - USD |
$2.99 | $2.99 | -40.08% | $2.39 | $2.39 at -20% |
 Philippine Peso |
₱174.95 | $3.00 | -39.85% | $2.40 | ₱139.96 at -20% |
 Chinese Yuan |
¥ 22 | $3.08 | -38.11% | $2.47 | ¥ 17.60 at -20% |
 Chilean Peso |
CLP$ 3000 | $3.15 | -36.81% | $2.52 | CLP$ 2400 at -20% |
 Brazilian Real |
R$ 16,99 | $3.15 | -36.81% | $2.52 | R$ 13,59 at -20% |
 Saudi Riyal |
11.95 SR | $3.18 | -36.15% | $2.54 | 9.56 SR at -20% |
 CIS - U.S. Dollar |
$3.29 | $3.29 | -34.07% | $2.63 | $2.63 at -20% |
 Malaysian Ringgit |
RM13.99 | $3.30 | -33.71% | $2.64 | RM11.19 at -20% |
 Taiwan Dollar |
NT$ 102 | $3.32 | -33.46% | $2.63 | NT$ 81 at -21% |
 Colombian Peso |
COL$ 13500 | $3.47 | -30.43% | $2.77 | COL$ 10800 at -20% |
 Mexican Peso |
Mex$ 64.49 | $3.49 | -29.87% | $2.79 | Mex$ 51.59 at -20% |
 Thai Baht |
฿115.00 | $3.50 | -29.75% | $2.80 | ฿92.00 at -20% |
 Peruvian Sol |
S/.12.00 | $3.55 | -28.79% | $2.84 | S/.9.60 at -20% |
 Qatari Riyal |
12.99 QR | $3.55 | -28.66% | $2.84 | 10.39 QR at -20% |
 Kuwaiti Dinar |
1.10 KD | $3.59 | -28.05% | $2.87 | 0.88 KD at -20% |
 Japanese Yen |
¥ 580 | $3.82 | -23.40% | $3.05 | ¥ 464 at -20% |
 South Korean Won |
₩ 5600 | $3.91 | -21.60% | $3.12 | ₩ 4480 at -20% |
 Uruguayan Peso |
$U159 | $3.99 | -19.97% | $3.18 | $U127 at -20% |
 Singapore Dollar |
S$5.25 | $4.04 | -18.94% | $3.23 | S$4.20 at -20% |
 U.A.E. Dirham |
15.00 AED | $4.08 | -18.15% | $3.26 | 12.00 AED at -20% |
 New Zealand Dollar |
NZ$ 7.39 | $4.24 | -14.96% | $3.39 | NZ$ 5.91 at -20% |
 Hong Kong Dollar |
HK$ 33.00 | $4.24 | -14.91% | $3.39 | HK$ 26.40 at -20% |
 Canadian Dollar |
CDN$ 6.49 | $4.63 | -7.15% | $3.70 | CDN$ 5.19 at -20% |
 Costa Rican Colon |
₡2400 | $4.77 | -4.28% | $3.82 | ₡1920 at -20% |
 Australian Dollar |
A$ 7.50 | $4.86 | -2.46% | $3.89 | A$ 6.00 at -20% |
 Norwegian Krone |
55,49 kr | $5.51 | +10.56% | $4.41 | 44,39 kr at -20% |
 Israeli New Shekel |
₪18.50 | $5.62 | +12.68% | $4.49 | ₪14.80 at -20% |
 British Pound |
£4.29 | $5.73 | +14.96% | $4.58 | £3.43 at -20% |
 Euro |
4,99€ | $5.79 | +16.05% | $4.63 | 3,99€ at -20% |
 Polish Zloty |
22,99zł | $6.29 | +26.11% | $5.03 | 18,39zł at -20% |
 Swiss Franc |
CHF 5.49 | $6.89 | +38.24% | $5.51 | CHF 4.39 at -20% |
Valve suggested prices are shown on package pages.
Price history
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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 |
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 |
