Download size

How many GB is Observe?

1 GB

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

Leave at least 7 GB free: games need headroom to unpack updates.

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

A world that plays itself. Watch nations battle for domination across a 3,400-region map, build infinite alternate histories, meddle with god-like powers, or program your own AI countries and climb the global ranked ladder.