Have been beta testing this since the first private beta build, and it is an absolute must-have for any serious game artist. Marmoset's Toolbag has always been the go-to for real time rendering, particularly for game assets, and 3 is no exception.

Since Toolbag 2, several key features have been added on top of core and lighting improvements, particularly:

- Animation support
- Real time global illumination
- Texture baking (one of the best bakers I've used to date, too)
- Massively improved lighting and general rendering quality
- Handles high poly models, particularly Zbrush sculpts with ease

And as Marmoset has a great track record about adding features to their tools in post-launch updates, it will only get better over time.