Manual MethodThe tried and tested method for a long time now:
Here is the step by step way how to do it: ImplementationAll of the above aren't really necessary unless the method described below doesn't work at all (it's a long story why that may happen and cannot be fixed), in fact a one time copy\rename action will make nearly every mod playable from it's desktop shortcut.
Renaming the mod's folder to one of the original kingdom campaigns, eg crusades.IntroductionIt would appear that three rather cumbersome methods are widely used to make mods Steam compatible:
