The Custom Campaign Mod 2 adds additional gameplay and content for Medieval II Total War (M2TW): Kingdoms. It includes all changes and content from the Retrofit Mod and the original Custom Campaign Mod with additional content, fixes, tweaks and improvements.
Playing as the Aztecs by the way, since they are a faction now with their own agents and buildings is marvellous!
Invading Europe, North Africa and the Middle East is great!
Also, all the new campaigns that they brought in, is really nice. Hotseat is the way to go, for all of them in my opinion.