This will allow you to change various diplomatic variables and relationship thresholds for treaties and missions for any of the 3 Sins versions. The Gameplay.constants file you need to access for this is located in /GameInfo So if you want to change the values for vanilla Sins, look for the file in gameinfo folder in the root Sins directory, such as: C:\Program Files\Stardock Games\Sins of a Solar Empire - Trinity\GameInfo If you want to change the values for gameplay in Entrenchment or Diplomacy, use the Gameplay.constants file in their respective folders, for example: