Download size

How many GB is The Callisto Protocol?

75 GB

That makes it bigger than 96% of Shooter games we have measured.

The median Shooter game needs 4 GB; the largest tenth start at 40 GB.

Leave at least 95 GB free: games need headroom to unpack updates.

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

In this narrative-driven, third-person survival horror game set 300 years in the future, the player will take on the role of Jacob Lee – a victim of fate thrown into Black Iron Prison, a maximum-security penitentiary located on Jupiter's moon, Callisto. When inmates begin to transform into monstrous creatures, the prison is thrown into chaos.