So we released our engine as an alpha.

You can check out the SDK here:
http://necrodome.homeftp.net/MainNecro3D.nss

The editor still needs documentation.

I'm awaiting feedback...

UPDATE:
Necro3D Game Engine Alpha 2 is released!

UPDATE:
Necro3D Game Engine Alpha 3 is released!

UPDATE:
Necro3D Game Engine Alpha 4 is released!