One of the coolest features on Shiva that I have been playing around with is the modifiable mesh. This is something I always wished I could do in Darkwind, but Torque really didn’t make it very feasible.
With Shiva, you can iterate through the individual vertices and even their uvs, and edit them. I’m working on an explosion system for Block Rockin’, whereby certain ‘exploder’ power-ups will blast nearby vertices away from them, causing a warping of the game platform/walls etc.