Download size

How many GB is Mercury Fallen?

0.49 GB

That makes it bigger than 17% of Simulator games we have measured.

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

A sci-fi colony management sim with a focus on exploration, expansion, and survival. Rebuild your underground facility, manage colonists and robots, and uncover the mysteries of an alien world light-years from Earth. Dig deep, expand across the surface, and shape your new home.