Also have an entirely separate question. Has anyone played Prussia recently? Trying it for the first time in months and noticed that the unique railroad doesn't show up on the loading screen nor does it show up on the leader screen. It seems like when you try to build it, it is just an ordinary railroad and no longer gives bonus yields to rural tiles. The only reference that seems to remain proving it existed is the Zollverein Mastery where it talks about a 25% trade yield bonus to it (which I am guessing is no longer applicable since it no longer exists?). It is still in the civilopedia as a Unique Improvement though, which is interesting, but also seems like the wrong place for it? Was this patched out fully from Prussia's kit or is this a bug? It seemed very strong (+2 Gold and Production to rural tiles) especially in conjunction with Prussia's other abilities, so I am curious as to whether it was removed for balance purposes.
Edit: It looks like the name is showing up under the Railroad still after building another one, but bonuses aren't being given to the rural tiles, which is interesting.
I just played a Prussia Modern age and I can confirm that it works. It will only give bonuses to the tiles that actually have a railroad, though. When you have two settlements connected by a road and you build a rail station in both settlements, the road will visually change to a railway and exactly those tiles are eligible to get the bonus. Tiles in the same settlements which have no railway on them don't get the bonus. It is one of the weaker bonuses of Prussia, though. Only a fraction of tiles in a settlement will have a railroad and only a fraction of those will be rural and worked. And railways come late and are expensive, so it won't help you that much. If you plan to build railways anyway, it is a free bonus, though.

