All Thea functionality gets fully integrated into 3dsmax through this plug-in as a new render engine. All possibilities of Thea material system can be found inside 3dsmax, while an access to Thea Material editor is kept, for user convenience. Also all lights types, render configuration settings, darkroom or render channels can be created or configured inside host application.

All kind of geometry is supported, including deformable meshes, geometric modifiers, renderable splines, compound objects or particle flow systems. Animation is also supported, as well as instances and external references. Render jobs can be sent through backburner without special considerations.

Fully integrated interactive render engine. Can be used as floating window or as an extended viewport. Any changes on materials, lights or cameras is reflected instantly on the IR viewport. Also geometry changes and object creation and deletion are also considered. The IR can be used to preview exposure, DOF or any tonemap settings applied from darkroom tab.

Thea for 3dsmax includes a proxy system to handle external Thea models (.mod.pack format). These models can be generated inside 3dsmax and include all textures used.

The plugin also adds direct support for Forest Pack scatter system by Itoosoft. A Thea Random Material has been included to add more variation on replicated objects.
Several tools have been also included to improve the user experience and user workflow, like a material converter, a light lister for Thea lights or a resource collector.