Deep Freeze is a mod for registered Wolfenstein, made by Joe Monaghan. It was released on February 16, 2004.
It features 30 levels, played in an episodic flow. Many of these are based on original Wolfenstein levels, and some have been taken from other mods.
Rudimentary coding changes are also featured. Some graphics have been lifted from the Lost Episodes, some from Blake Stone and some from DOOM.
An original addition is a pretty good teal SS guard.