Physx and Krakatoa

I think I've become obsessed with Krakatoa. I mean the endless possibilities with the particles make it seem like the very world is at my fingertips. Oh and I was testing out how to do a ball and chain simulation using the physx simulation engine. I learned the strategy from a tutorial but it is quite interesting the way he made it work. I am not going to make a tutorial on how to do it but I might in the future so stay tuned. Here's what I made:

I apologise for the low quality. Thank you!