Subway Builder

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Subway Builder
Developer(s)	Colin Miller
Director(s)
Producer(s)
Designer(s)
Programmer(s)
Artist(s)
Writer(s)
Composer(s)
Series
Engine
Platform(s)	Windows macOS Linux
Release	WW: October 9, 2025
Genre(s)	Construction and management simulation Train simulation
Mode(s)	Single-player
Cabinet
Arcade system
CPU
Sound
Display

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Subway Builder is a 2025 transit simulation game by independent developer Colin Miller. The game is a single-player railroad construction and management simulator. Players build subway systems in real-world cities by constructing tracks and stations under realistic constraints and costs. They also design routes and manage operations to serve commuters simulated using real-world census data.

Development

Miller says he was inspired to create Subway Builder by his experience on a broken down 6 train during his commute home using the New York City Subway, where he thought "maybe I can make a better one". Originally considering it a small project, he decided to build out a full game after a video of an early demo gained significant social media attention.

To create the maps and inform the simulation, Miller drew on real-world datasets such as from the United States census, Department of Education, Federal Aviation Administration and OpenStreetMap.

Miller tried to find a balance between hyper-realistic simulation and more general recreation through the game's modes, allowing players to choose whether or not they wanted to play according to real-world constraints.

Release

Miller posted on January 10, 2025 that he was working on a "game where you can build a subway network".

Subway Builder was released on Windows, macOS and Linux platforms on October 9, 2025. It continues to be updated with additional features and fixes.

Gameplay

The player starts with a map of their selected city accurately populated with the its road network, buildings and topographical features. The player proceeds to build subway stations and tracks in the city. Tracks can be built at different depths to navigate the city. Deeper tracks cost more to build, but construction too shallow beneath buildings incurs demolition costs. The player can use various data analysis tools to see where residents and workers are concentrated to plan the locations of subways and direction of routes.

Once stations and tracks are built, the player then designs the routes that trains will travel on their subway system. Players choose the route's name and colour, stations serviced, and route frequency. Commuters use a combination of vehicle, transit and walking modes of transport, and the player can see how their services impact this behaviour and where improvements in their system can be made.

Game modes

Players can choose between 2 modes of gameplay:

Realistic

In realistic mode, the simulation is constrained by realistic constraints and costs. The player starts with $3 billion to being construction and aims to run a profitable system which services commuters effectively.

Construction costs in the game are based based on the cost-per-mile of transit construction outside of the United States. As transit construction costs in the United States are generally between 2 and 5 times higher than other parts of the world, using overseas pricing was "the only way the game would be playable".

Sandbox

In sandbox mode, players can freely build and run the simulation without budget constraints.

Simulation

The game's simulation assigns millions of generated commuters with home and work locations across the city map using a distance-based gravity model based on census data. The simulation then generates passenger flow and demand by making decisions for each commuter about the best way for them to travel based on travel time, cost and time of day. Commuter experience is also accounted for, with commuters discouraged by delayed or cancelled services. College student and airport commuters are also simulated with different travel behaviour.

Maps

There are 25 cities available to play, all from the United States:

• Atlanta, Georgia
• Austin, Texas
• Baltimore, Maryland
• Boston, Massachusetts
• Charlotte, North Carolina
• Cincinnati, Ohio
• Cleveland, Ohio
• Dallas, Texas
• Denver, Colorado
• Detroit, Michigan
• Honolulu, Hawaii
• Houston, Texas
• Indianapolis, Indiana
• Miami, Florida
• Minneapolis, Minnesota
• New York City, New York
• Philadelphia, Pennsylvania
• Pittsburgh, Pennsylvania
• Portland, Oregon
• Salt Lake City, Utah
• San Diego, California
• San Francisco, California
• Seattle, Washington
• St. Louis, Missouri
• Washington D.C.

Additional maps are planned for future release, both within and outside the U.S.

Reception

Subway Builders received positive social media attention both prior to launch and on release. Journalists noted the game's "addictive" quality, as well as its realistic simulation. Fast Company noted: "many developers have tried to gamify transit design with offerings like MetroConnect, Brand New Subway, and Mini Metro. But few have attempted to make their simulations realistic enough to replicate real transit-planning challenges at the scale of cities like New York or Seattle."

The game was also noted for its potential as a tool for "public imagination" in promoting and developing public transit in the United States.

External links

• Official website

This article "Subway Builder" is from Wikipedia. The list of its authors can be seen in its historical and/or the page Edithistory:Subway Builder. Articles copied from Draft Namespace on Wikipedia could be seen on the Draft Namespace of Wikipedia and not main one.

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