Transport Fever 3 Wiki

Transport Fever 3 Map Size

The largest map in the normal menu is Very Large, 16.384 by 16.384 km at a square ratio. Four more sizes, up to Gigantomaniac at 28.672 km a side, unlock with one line in a settings file on PC and Mac. PS5 and Xbox stop at Large.

A dense city skyline on a waterfront under a pale sunset sky, with mountains behind
A city skyline across open water, mountains in the distance.

Map size calculator

Edge ratio
Edges
16.384 × 16.384 km
Area
268.4 km²
Against Very Large 1:1
100%
Heightmap to import (grayscale PNG)
4097 × 4097 px
  • PC and Mac only
  • In the menu by default
64 km

Every size at a square ratio

SizeEdges (1:1)AreaLongest edge at 1:5Where
Tiny4.096 × 4.096 km17 km²7.68 kmPC and Mac, experimental
Small8.192 × 8.192 km67 km²17.92 kmPC, Mac, PS5, Xbox
Medium11.264 × 11.264 km127 km²25.6 kmPC, Mac, PS5, Xbox
Large14.336 × 14.336 km206 km²32.256 kmPC, Mac, PS5, Xbox
Very Large16.384 × 16.384 km268 km²35.84 kmPC and Mac
Huge20.48 × 20.48 km419 km²43.52 kmPC and Mac, experimental
Megalomaniac24.576 × 24.576 km604 km²53.76 kmPC and Mac, experimental
Gigantomaniac28.672 × 28.672 km822 km²64 kmPC and Mac, experimental

The menu rounds these edges, so what you see in game can differ by up to 250 m. The ratio is edge to edge: a 1:5 map is a long strip, which suits a single coast-to-coast railway far better than a square of the same area.

How to unlock the experimental sizes

Tiny, Huge, Megalomaniac and Gigantomaniac are hidden behind a switch in settings.lua, the file in your user data folder that also holds screen resolution and volume.

  1. 1

    Close the game

    Edit the file only while the game is not running.
  2. 2

    Open the userdata folder

    On Steam for Windows it is C:\Program Files (x86)\Steam\userdata\<your number>\3493540\local. On Linux, look under ~/.local/share/Steam/userdata; on a Mac, under Library/Application Support/Steam/userdata in your home folder. GOG copies keep it in AppData\Roaming\Transport Fever 3 on Windows.
  3. 3

    Set experimentalMapFeatures to true

    Open settings.lua in a text editor, find experimentalMapFeatures (keys are roughly alphabetical) and change its value to true.
  4. 4

    Save and start the game

    The four extra sizes now appear in the free game and map editor size lists.

Consoles: Small, Medium and Large only

Memory limits keep the PS5 and Xbox Series X|S versions to the three middle sizes. There is no settings file to edit on console, so Very Large and the experimental sizes are PC and Mac only. More on what else differs is on the PS5 page.

Importing a real-world heightmap

The map editor imports grayscale PNGs, 8-bit or 16-bit, where each pixel is the height at one corner of a 4 by 4 metre square. That is why the pixel counts in the calculator are one more than a round number: 1025 pixels cover 4096 metres. Put the image in the heightmaps folder of the same userdata directory, at the exact size for the map and ratio you want.

Bigger maps do not change the economy on their own, but towns and industries sit further apart, and revenue is paid on straight-line distance. See how revenue works before planning a 50 km trunk line.