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. Sawyer independently developed the game over nine years from the 1990s as a "spiritual successor to Transport Tycoon", with the game featuring "fundamentally the same" gameplay but with "differences in detail, scale and presentation" to update and refine the features that Sawyer "wanted to get right" in its predecessor. Locomotion was released to mixed reviews, with critics feeling the game's presentation was dated for its time and was less user-friendly than its predecessors. Following an extended hiatus from the video game industry, the game's engine was used as the basis for a 2013 mobile iteration of Transport Tycoon for Android and iOS. Locomotion has also since received an unofficial, open source reimplementation, known as OpenLoco.