Weird33 is a mod for registered Wolfenstein, made by Chris Chokan. It was released on October 14, 2003.
The project was done in one day, and features a number of weird happenings and bizarre experiences, each of which were different depending on which episode the player selected. Only an EXE was made; no new maps or graphics appear.
Some guards and objects float continuously, making playback both surreal as well as difficult. Some other levels assign strange values in terms of score, and various odd sprites and actor frames pop up out of the blue.