Manual download and installation
First you need to download a mod. Search for a mod you like on Mod-Network.com .
After you found a mod. Just extract the (zip) archive into the Transport Fever mod folder which usually is located in the game installation folder. Make sure that the mod has its own folder inside the “mods” folder (usually the zip archive already contains this folder).
C:\Program Files (x86)\Steam\SteamApps\common\Transport Fever
~/Library/Application Support/Steam/common/Transport Feve
Enabling a mod
Start Transport Fever and go to the “free game” page. Select “Custom” and switch to the “Advanced” tab and there you should see the installed mods. To enable a mod, double click it or click the grey switch in the “Enabled” column. It will turn green if a mod is enabled.
After starting the game, the active mods will then be “coupled” to the game. If you save and reload the game later the active mods will automatically be enabled again.
Adding a mod to a saved game
It’s also possible to add mods to existing saved games (enable additional mods for a saved game).
Warning: Because some mods modify game resources in a critical way, doing this can lead to unexpected behavior or even game crashes. Nevertheless, adding mods to existing save games is needed in some cases.
To add a mod to an existing saved game, go to the load game screen. Select the saved game you wish to start with and click on the plus “+” sign in the mods area at the bottom of the screen.