Railroads Online is an unapologetically faithful train sim which, depending on your interest in the era, very much falls into the “marmite” category.
Mexico, 1921: A Deep Slumber has some minor technical rough edges, but these are easily overshadowed by the engaging narrative, unique gameplay mechanics, and immersive atmosphere.
You’ll be glad when Windborn: Journey to the South is over, fully understanding why EpiXR have decided to separate this from the otherwise decent Aery series.