Subway Builder Mods

A collection of ready-to-use mods for Subway Builder, a subway/metro simulation game.

Looking to create your own mods? Check out subwaybuilder-mod - the official mod template with examples and TypeScript definitions.

Installation

1. Open Subway Builder
2. Go to Settings > System
3. Click "Open Saves Folder"
4. Navigate up one level to the metro-maker4/ folder
5. Create a mods/ folder if it doesn't exist
6. Copy the mod folder (e.g., day-night-cycle/) into the mods/ folder
7. Restart the game and enable the mod in Settings > Mods

Mods folder locations by platform:

• macOS: ~/Library/Application Support/metro-maker4/mods/
• Windows: %APPDATA%\metro-maker4\mods\
• Linux: ~/.config/metro-maker4/mods/

Available Mods

Day/Night Theme Cycle

Automatically switches between light and dark theme based on in-game time of day.

• Day (6:00 AM - 5:59 PM): Light theme
• Night (6:00 PM - 5:59 AM): Dark theme

Shows a notification when the theme changes at sunrise/sunset.

Files: day-night-cycle/

Bushwick Express

Custom NYC career mission that uses geographic metrics to track actual passenger flows from Bushwick to Lower Manhattan.

• Star 1: Build 3 stations in Bushwick/Williamsburg area
• Star 2: Transport 1,000 passengers from Bushwick to Lower Manhattan
• Star 3: Transport 5,000 passengers from Bushwick to Lower Manhattan

Uses bounding box origin-destination tracking to count actual commuters.

Files: bushwick-express/

Rush Hour Remix

Customize AM/PM commute windows and simulate weekend demand boosts.

• Adds settings sliders for AM/PM commute windows
• Applies custom timing via popTiming.setCommuteTimeRanges
• Weekend bonus based on total demand and ticket price
• Optional weekend boost notifications

Files: rush-hour-remix/

Commute Sankey

Beautiful Sankey diagram showing commuter flow through your transit system.

• Visualizes flow from Commuters → Transport Mode → Routes → Arrived
• Shows transit mode share percentage
• Breaks down transit riders by your top 5 routes
• Real-time updates every 3 seconds

Files: commute-sankey/

KML/KMZ Route Export

Export your metro routes to KML format for importing into Google Maps, Google Earth, and other GIS applications.

• Routes exported as colored polylines with proper track geometry
• Stations exported as labeled point markers with rail icons
• Adds "Export Routes to KML" button to escape menu
• Also exposes window.exportMetroRoutesToKML() for console use

Files: kmz-export/

Creating Your Own Mods

See the Subway Builder Modding Guide for full documentation on the modding API.

License

MIT