Had a play with it awhile ago as well, wasnt to impressed either and as MrCredo mentioned 'no binaries for MinGW'
On a plus note this engine is much more well suited for bmax wrapping and seems more feature-rich.
http://g3d-cpp.sourceforge.net

Features that stood out:
- Paged-geometry
- Hardware Accelerated Ambient Occlusion Techniques
- Easy commad-set
- Active community
It's clear this engine was built for speed, they added the eyecandy after a solid prototype was established.
and it includes the binaries, full open source engine.