Weta utilized RenderMan to take advantage of improved ray tracing and instancing objects. Starting in Direct3D version 9, Microsoft included support for geometry instancing. Windows Server 2003 added a third main table for security descriptor single instancing. The game also featured a seamless world map, and made no use of instancing. New features include the Instancing Lab and advanced lighting. Despite its advantages, instancing in MMOGs has been criticized. Since then, instancing has become increasingly common.