Download size

How many GB is T-Minus 30?

0.49 GB

That is less than the typical Simulator game, which needs about 4 GB.

Leave at least 6 GB free: games need headroom to unpack updates.

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

Plan a city and build a space fleet to escape a dying Earth before time runs out. You have 30 minutes to scavenge a post-apocalyptic environment to build infrastructure, grow crops, generate power, and assemble rockets to save as many people as you can.