Just came across this on one of my discs... Grabbed everything @ 20 years ago off the site... This is a simulation/game not just for railroads but for roads, ports, towns...You name it>>> I think you could run it on most any machine that is ancient... I remember messing about with it back then but don't remember anything at all now, pretty cool freeware though...
https://archive.org/details/simutrans-131
https://archive.org/details/simutrans-131