Poulet Noir, a prolific and respected modder for Moviestorm, recently got permission from the people who created FPSC Pack 36 for the First Person Shooter Creator.
The Urban Decay pack is just that: run-down buildings and street decor/debris to give your sets a more gritty look.
Here's the original demo of the conversion to Moviestorm:
Looks great, don't it? Download it here.