Download size

How many GB is The Anomaly Experiment?

8 GB

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

Leave at least 15 GB free: games need headroom to unpack updates.

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

A Psychological Horror where you’re offered freedom by joining a trial for a new drug. The experiment is simple: enter the room, observe, and identify what has changed. Complete all tasks, and your sentence is commuted.