This page is dedicated to all things Systemic, an excellent mod akin to the Devastation mod for Quake 2. I host a dedicated server here on Plague, and this page holds information about it.

You can pick up the mod, currently v 1.1.0, loaded as a mutator for all gametypes here.

[An excerpt from the Systemic home page]

After the immense yet underground success of the Quake2 modification Devastation (DevQ2), Systemic aims to bring a similar amount of chaos to Unreal Tournament 2003. Systemic is, as you might have guessed by now, a modification of Unreal Tournament 2003 which introduces "Cygens" into regular UT2003 combat. Cygens are large heavily armed and armored mechs that move considerably slower than regular players. They are roughly 4 times as tall and are 10 times tougher than players, so you'll know them when you see them. You might even hear them first, as they emit tremendous footfalls that can be heard from afar. Cygens also have an increased jumping ability allowing them to elevate above players and come crashing down upon them, squishing anything meaty below.