Included is a blend file accompaniment to upcoming articles to be featured on annex2nothing.com/lego-city-undercover-blender1 regarding how and why I used Blender to accompany and enhance my workflow while working on the recent Lego City Undercover Wii-U title.
<img style="vertical-align: middle; border: 1px solid black; margin: 1px;" src="http://confidentgamers.com/wp-content/uploads/2013/01/LEGO-City-Undercover.jpg" alt="lego city" width="640" height="352" />
Specifically there is a procedurally generated rock method for customising the basic rock form and then tweaking the modifiers and textures settings for the result of your choosing. A very similar method was used to generate several rocks in Lego City.
Glad it was of help, that's great to hear! Part 2 should be coming soon, the same blend file should still be relevant for following along :)
Awesome, I just watched your video and tried to replicate it, This saves so much more time.