The Escher player physics mutator is a small test package to show off player controls with independent gravity, a feat never successfully attempted with the UT2004 engine before. With this mutator running, players are able to have independent gravities and walk on surfaces of any angle. Midair control is completely free thanks to quaternion rotational code, and whilst walking player control naturally reverts to a standard fps control style.
The entire player animation system had to be rescripted for this to work, as well as the bulk of physics code and of course all movement code. There are a few minor animation problems in this version, and bots don't work. Be sure to add a serverpackages line for this mutator if you wish to play online with it.