Download size

How many GB is Experiment 404?

3 GB

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

Leave at least 9 GB free: games need headroom to unpack updates.

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

Room 404 repeats. Identify anomalies, file reports, and stay alive—some anomalies might hurt you. Nurture the plants, listen to the overlord, end the loop, and unlock multiple unique endings.