Start from the flat plane with your tiling texture on it, and start to model the cracks and holes to match the texture features. For example: http://www.philipk.net/tutorials/modular_rocks/modular_rocks.html http://wiki.polycount.com/ModelingRubbleIntoAPath
Ok say this. The floor looks weird. It's supposed to be lighted up as a single mesh, it consists of smaller parts, merged together. I broke it down to show. It shouldn't be like this. Attachment not found. Attachment not found. Now, in the lower example in UDK it looks uniform. What am I doing wrong here?