Chris Sawyer's Locomotion

Chris Sawyer's Locomotion (often simply Locomotion) is a video game designed and programmed by independent game developer Chris Sawyer, and published by Atari Interactive in September 2004. The game is a simulation game in which the player takes on the role of a transportation company manager, building transportation networks and managing the flow of goods and passengers in order to compete against rival companies.

Source: Wikipedia — Chris Sawyer's Locomotion (CC BY-SA 4.0)