An assignment in my digital sculpting class was to model and paint some rocks in zBrush. I did that, then took it to the next level and made a big earth elemental out of them...as an added bonus I also did a really fast rig and walk cycle animation! I used Topogun to retopo all the rock objects and reduce their poly count before setting them up on a quick biped rig in 3ds Max. Technically this model is game ready, BUT I'd prefer to go back and clean up all the UVs and probably get a better rig set up in Maya.
Earth Elemental walk cycle test