This review is for Train Simulator's Colton & Northern Add- On. (You won't see an image to the left, nor will you see the hours I've played.)
A lot of heart went into the creation of this Add-On. The map layout is fantastic. It is as if you were suddenly transported from the real world into a living, breathing N scale train set. The towns depicted in this scenario will seem familiar to anybody who grew up or lives in the Midwest. The ambiance with its rivers, bridges, and ridges will make you glad you own Train Simulator, but much of it seems half baked. There are too many buildings that are simply cut and paste clones. It's like watching an old The Flinstones
episode and watching Fred and Barney drive by the same backdrop.
The scenarios are interesting, but two of them are just broken. I tried them multiple times, no joy. The fact that I'm an OCD completionist bothers me, but alas, it doesn't involve Steam achievements.
The scenarios that do work, however, are remarkable. You'll feel as if you accomplished a day's work. I'm recommending this, especially if you can find it for el cheapo via a Steam summer/winter sale.