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== Gameplay ==

The game is based around building rapid-transit systems in real-world cities based on real-world data, such as population centers and employment centers. There are 26 available cities, all based in the United States. While the population data is accurate, the costs are lower on purpose because, as the developer Colin Miller said, they "make playing impossible."

The normal mode grants the player a starting budget of three billion dollars, while the sandbox mode has no constraints. 

=== Construction ===

{{Main|Construction}}

The game allows the player to place down tracks and route trains over those tracks. There are currently has two [[Train types|types of trains]]: heavy metro and light metro, along with varying track elevations. Each combination of track type and elevation has its own costs associated with it.