KKK is a mod for registered Wolfenstein, made by Merijn Heijnen. It was released on July 2, 2000.
Listed as being beta 1.0, the mod was never finished though it was stated at the time that source code changes were to be a part of it.
The mod features 3 levels, all played on Episode 1, and cannot be finished properly. Its theme is based on extremism in the United States in the shape of Ku Klux Klan, and features many graphical changes alluding to this.
As no source code changes were featured, it can be played in additonal sourceports.