Download size

How many GB is Signal Zero?

1 GB

That is less than the typical Strategy game, which needs about 3 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.

Humanity is enslaved by AI. Your keyboard is the last weapon. Inject viruses into the AI network and liberate 20 countries in this pandemic-style idle strategy. Build your virus, spread the infection, sever the AI's bandwidth. Full localization, 16 achievements.