adkiller:
1. The engine is multi API. At the moment only DirectX 8.1 renderer implemented. OpenGL 2.0 renderer is planned after the public release. Actually there is a simple OpenGL implementation, but it's very basic.
2. The same thing with audio. Currently - simple abstract interface and its DirectSound implementation
3. Network module provides an abstract interface and its implementation via DirectPlay.
4. Blender3D/COLLADA import - I hope other people will do such things like import from various applications/format.