Download size

How many GB is Astroplanet?

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.

You have damaged the ship and ended up on a mysterious planet where the air is unsuitable for breathing. You have to save yourself by creating an atmosphere suitable for life. Build a base, master resource management, terraform the planet, and grow food so you don't starve to death.