Download size

How many GB is Mars 2055?

0.2 GB

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

You wake up, alone, on a planet that appears to be Mars. There is not much else I can tell you.