Download size

How many GB is The Sleep Experiment?

5 GB

Leave at least 11 GB free: games need headroom to unpack updates.

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

Experience the horrors of one of the most infamous experiments that ever took place. As a test subject in a top-secret Soviet research facility, you must endure days without sleep while facing unimaginable terrors that lurk in the shadow.