Download size

How many GB is Happy Nuclear?

1 GB

That is less than the typical Point-and-click game, which needs about 2 GB.

Leave at least 7 GB free: games need headroom to unpack updates.

The figure is the storage Steam lists as required for this game, not a measured download.

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.