Download size

How many GB is Astrobuilder?

10 GB

That is more than the typical Simulator game, which needs about 4 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.

The world’s first dynamic world AI RPG. Play as any NPC in a galaxy that evolves in real time. Every quest, dialogue, and fate is generated on the fly — no reruns, just infinite stories shaped by your choices.