Oh, I've got an Idea! Whirlpool arena. This is a normal arena, with a spinning disc in the center. The thing is, that there is two rings outside of it, spinning at slower speeds. I'll explain. Disk is spinning at 400Ring one (inner ring) is at 300Ring two is at 200. And there is some spikes on the walls.
Would they be counter-rotating?
W-nut, The doc for GMF editting... (Nar, Thanks for your much appreciated input.:-D)
..... that I need Spyguy to skin for me...
*Wait did I DP? Don't tell Hydro...*