Digital version (not Game Pass) and Ultimate.Hey everyone!
We're still collecting information about the issue with claiming Green Cities for free on Xbox One, so we can solve it for you as soon as possible.
If you encounter this problem, could you please confirm if you purchased Cities: Skylines base game on your Xbox account or you added it via Xbox Game Pass? Also add any other details that you think might be relevant.
Thank you for all the replies and your patience!