Download size

How many GB is Insomnia: Chapter One?

6 GB

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

Leave at least 13 GB free: games need headroom to unpack updates.

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

2012. The Arctic research station "Persei" loses contact with the outside world. You are Ethan Miller, a technician sent to the facility to fix the issues. But something here has clearly gone out of control.