Download size

How many GB is Ecosystem?

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.

Grow and modify an ecosystem, with simulated evolution by natural selection creating the lifeforms that inhabit it. All the creatures in the trailer evolved on their own in the game. None were hand-edited!