5th is a map set for registered Wolfenstein, made by Pablo Dictter. It was released on August 15, 2001.
It features 5 new levels played on Episode 3. Once again, the size of the maps is rather small and compact, but guarding and decoration is of good quality.
According to the readme, the mod is largely a collection of old maps that Pablo released so they wouldn't go to waste. Includes a mapinfo file detailing the story and thought process behind each of them.