"Sid Meier's Railroad Tycoon is a business simulation game. There are five versions; the original Railroad Tycoon (1990), Railroad Tycoon Deluxe (1993), Railroad Tycoon II (1998), Railroad Tycoon 3 (2003), and Sid Meier's Railroads! (2006).
Railroad Tycoon was written by game designer Sid Meier and published by MicroProse and though it shares the "Tycoon" suffix, it is not related to other Microprose games such as RollerCoaster Tycoon and Transport Tycoon, which were developed by Scottish programmer Chris Sawyer.
The objective of the game is to build and manage a railroad company by laying track, building stations, and buying and scheduling trains. The railroad must be built in a certain time to win the game."
Source: Wikipedia, "Railroad_Tycoon_(series)", available under the CC-BY-SA License.