If you are playing version 2.0 or higher, you are using the most polished version of the engine.
The core 80+ hour campaign where you build and manage your own kingdom. Three Major DLCs: Pathfinder: Kingmaker – Imperial Edition [v 2.0...
"Enhanced plus edition" of Kingmaker? : r/Pathfinder_Kingmaker If you are playing version 2
Adds the Tiefling race, the Kineticist class, and a new companion, Kaessi. the Kineticist class