Download size

How many GB is Sleepless?

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.

A horror game set in an abandoned bunker in Russia, inspired by "The Russian Sleep Experiment." Players must collect important papers from past experiments, but the bunker is difficult to navigate with locked corridors, no electricity, and a constant feeling of being watched.