Download size

How many GB is Alteratio?

6 GB

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

Leave at least 13 GB free: games need headroom to unpack updates.

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

Immerse yourself in this first-person horror game filled with psychological scares, intricate puzzles, and gripping mysteries. With an atmospheric design that keeps you on edge, the game blends exploration, story-driven moments, and unexpected jump scares to keep players engaged. As the terror intensifies, you must not only confront the creature chasing you, but also your own deepest fears. In this harrowing journey of self-discovery, every decision will be crucial to your survival.