No, grass' animation is done by using is a simple vertex controller. However, each patch has 88 vertices and there are 72 patches in this scene, so there's quite a lot stuff to handle. I thought about playing different animations, but i would end up showing multiple ninja's making the same ridiculous moves over and over again. While this might be a good example of skeletal animation from a techy stand point (and it's basically what i did in the former version of An3DBench with the alien), it doesn't look too great IMHO. A kind of fighting scene would be much cooler, but i neither have to the time nor the talent to create it. That's why there's a ninja walking around scrunching grass now.