Download size

How many GB is Galactic Civilizations III?

12 GB

That makes it bigger than 82% of Simulator games we have measured.

The median Simulator game needs 2 GB; the largest tenth start at 20 GB.

Leave at least 20 GB free: games need headroom to unpack updates.

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

Galactic Civilizations III is the largest strategy sandbox ever made. Start with a single world and expand across the galaxy through diplomacy, trade, cultural hegemony or military conquest in this single-player or multiplayer 4X strategy game.