Download size

How many GB is Grand Canyon?

10 GB

That is more than the typical Adventure game, which needs about 5 GB.

Leave at least 17 GB free: games need headroom to unpack updates.

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

Survive on your own while trying to meet your basic needs such as food, water and shelter, interact with the survivors and fulfill the tasks they give you, plan to escape from the island.