Download size

How many GB is Cities: Skylines - Mass Transit?

4 GB

That makes it bigger than 59% of Simulator games we have measured.

The median Simulator game needs 2 GB; the largest tenth start at 20 GB.

Leave at least 10 GB free: games need headroom to unpack updates.

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

Mass Transit brings several new systems into play to help citizens traverse their towns in speed and style. Commuters can now get around on the water, up high mountain peaks, and even through the sky thanks to the addition of ferries, monorails, cable cars, and blimps to the game.