Batman: Wrath of Mr. Freeze is a mod for registered Wolfenstein, made by Ian Skevos-Jones. It was released on December 20, 2003.
Preceded by Batman which had only come out three months earlier, this mod features extra coding changes, including exploding oil drums and collapsible columns. Smart new weapons are also featured, and many new enemies and textures have been added.
Mapping is of higher quality than the predecessor, yet again making for an extremely atmospheric and well-gelling gameplay, with especially underwater levels being quite evocative.
Ian's brother WSJ was responsible for the coding.
The mod is still only available in DOS.