Kingdom Template - a technical example.  It's functional, but not very interesting on its own and I personally wouldn't play it.  This is meant to learn from.

The first thing we need to say about this app is that it is free and that you can download it right now. You don't need to do anything else.

If you're interested in adding new Kingdoms, or Clans, or NPCs, or any of the other things listed above, this mod can be used as a starting point for you.

The app has been made with the idea that you can use it to learn how to create your own mods and templates.