Volition's FPS Red Faction should be hitting stores in the US just about now, and to celebrate, Volition has released a toolkit for the game. This toolkit will allow you to create your own content for the game. There is readme available here. You can get the 2.88mb toolkit from 3D Downloads or the Descent Network.
This is a collection of in-house utilities and exporters for players to use when creating custom content for Red Faction levels and mods. These tools enable easy addition of custom character models, animations, special effects, level editor objects, and more.