Download size

How many GB is Aground Zero?

4 GB

That is less than the typical Role-playing (RPG) game, which needs about 6 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.

The world has ended. You are deep underground, and all alone other than your AI companion. You will have to mine and build to survive, and search for other survivors to help you. Will you be able to reach the surface? And what will you see when you get there?