• Install Unreal Engine 5.4.4 in the Epic Games Launcher. Make sure not to use any other version.
• Install .NET 8.0 Runtime. The link should directly start the download.

• You can find the latest and older Modding SDK Versions on GitHub.

• Go to Modding SDK\Plugins\SubwaySim_Extern in the downloaded SDK.
• Rename the folder Simuverse_ModTemplate to YourName_YourMod and inside the folder rename the file Simuverse_ModTemplate.uplugin to YourName_YourMod.uplugin.
• Rename all occurences of Simuverse_ModTemplate to YourName_YourMod in YourName_YourMod.uplugin and Lua\mod.lua.
• Start the project by double clicking Modding SDK\SubwaySim2.uproject.
• Enable Show Plugin Content in the Settings of the Content Browser.
• If you plan to create a map mod, you need to make sure that “Update Navigation Automatically” is enabled in the Editor for the NavMesh: Edit → Editor Preferences → Level Editor → Miscellaneous → Editing“.
• Now you can use the content folder All > Plugins > YourName_YourMod Content for your mod content and the Lua folder Modding SDK\Plugins\SubwaySim_Extern\YourName_YourMod\Lua for your Lua scripts.
• We provide assets for your mods to build upon in the SubwaySim2_Modding plugin but do not modify them as the changes will be ignored.

• Open the build script BuildMod.bat in a text editor to adjust the variables.
• Set DLC_NAME to YourName_YourMod, ENGINE_ROOT to your engine path and LEVEL_PATH to your level (leave empty if not applicable). Example usages:

set DLC_NAME=Simuverse_SampleModMap
set LEVEL_PATH=Level/SampleModMap

set DLC_NAME=Simuverse_SampleModVehicle
set LEVEL_PATH=

• Run the build script by double clicking BuildMod.bat.
• If you filled out the level path you can type y when asked to build the NavMesh for your level.
• Some errors and warnings are expected and can usually be ignored if the mod has been built successfully.
• The mod will be built in Modding SDK\Output\YourName_YourMod.pak. Subsequent build times will be much shorter.

• Place the mod in %userprofile%\Documents\My Games\SubwaySim 2\Mods (create the folder if it does not exist).
• The SampleModMap can be selected in the “Choose City” menu and the SampleModVehicle can be selected as a vehicle in Berlin.

• Create an empty folder for your plugin %userprofile%\Documents\My Games\SubwaySim 2\Mods\YourName_YourMod\.
• Copy the Lua scripts from your Lua folder inside this folder maintaing the same folder structure.
• The game will now use the Lua scripts from this folder if they exist, otherwise it falls back to the mod itself.