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Steam

Happy Nuclear

Also known as Happy Nuclear, happy nuclear, happy-nuclear

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.

Last update
17 May 2026

Latest update

Announcement

v0.2.9V 0.2.9 Temporary Fix

We've received reports about an issue where floorplans automatically pull tokens to unwanted positions when loaded, which ends up destroying the progress players have worked hard to build. Originally, this feature was d…

1 changeGameplayRead announcement

Update history

Browse past updates and patch notes for this game.

5 updates

Gallery

In-game media