Download size

How many GB is Mars or Die!?

4 GB

That is less than the typical Shooter game, which needs about 8 GB.

Leave at least 10 GB free: games need headroom to unpack updates.

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

Control two characters simultaneously! Survive, gather, collect upgrades, fight all sizes of one-eyed Martians, build defensible outposts and conquer Mars, in this glorious mix between roguelite and tower defense.