1  
2  Architecture
3  ============
4  Spatial gardening and smooth voxels are used to simulate nature, materials, and still water.
5  Fluid simulation is used to emulate highly reactive droplets of gases and liquids.
6  Zones are used to partition the open world.
7  Floatable bodies and blendtrees for moving in liquids.
8  Ragdolling and blendtrees for combat and locomotion.