Download size

How many GB is Accretion?

2 GB

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

Leave at least 8 GB free: games need headroom to unpack updates.

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

Simulate being a celestial body in an open universe, using the rules of relativity and astrophysics to plunder mass and gradually evolve from a gas cloud into a planet, a star, or even a supermassive black hole.