How does the Realm of Diggle Gods DLC affect the original game?

How does the DLC affect existing save games? Do I have start over in order to access DLC material?

What I understood from the description is that there are new levels and items, but what I didn't quite get was that are those DLC levels some where deep down in the end of the game or something? Or is it just that next level that I access can be from the DLC?


Solution 1:

You need to enable/disable the expansion when you start the character, so in order to see the new content, you'd need to start a new character.