The Subworld Hunter was a Wolfenstein 3D mod being developed by Rocketboy680 in 2005. A demo released in February of 2005 on the Wolfenstein 3D Dome shortly before a hard-drive failure on Rocketboy's computer forced him to cancel the project.
The player is a Subworld Hunter, a kind of honorary warrior of The Subworld dimension. After a mad scientist from Earth named Professor Krench created a portal to the Subworld he enslaved its inhabitants by creating an alliance with a faction of Subworld soldiers of fortune. With Krench's plans threatening to lead to inter-dimensional conquest, the Subworld Hunter travels between Earth and the Subworld dimension to destroy his corrupted homeworld and put an end to Krench's tyranny.