Modding for DLC Features

Each DLC adds systems of its own, and those systems can be modded in the same way as the base game. The pages below cover the parts of the data files that only exist once a particular DLC is installed.

One thing to check before you start: a MOD that uses these features requires the matching DLC to be installed by anyone who plays it. If you intend to share your MOD widely, it is worth deciding early whether to depend on a DLC or to stay within the base game.

Service firms come with the Experimental DLC. Modding Topics covers the parts of the game data common to every edition, and Other MOD Topics collects the remaining reference material.