Download size

How many GB is Fortified Space?

5 GB

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

Leave at least 11 GB free: games need headroom to unpack updates.

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

Seize control of enemy planets in this nostalgic space sim and tower defense game made in the style of classic Flash games. Start by dominating orbital space in starship combat with railguns, defense turrets, and shields. Once clear, land on the surface to build a base and destroy waves of enemies.