Secrets of the Grauburg Dungeons is the second mod released by Kuki. It was made for shareware Wolfenstein, and features no coding changes. It was released on June 16, 2003.
It features a lot of new graphics and sounds and the mapping is large, extensive and well detailed. Some maps were made by Kuki's brother, Macior.
Included in the download is an interactive manual.
This proved to be Kuki's last mod release.