Can't call it 3D anyway, It needs 3D sound as well to be called
3D or at least 3D virtual sound.

So by rights it's just a 3D graphics game engine, Am I right?

Windows XP SP3
Intel Dual Core CPU: E5200 @ 2.5GHz
4.00GB DDR3 Ram
ASUS P5G41T-M LX
PCIE x16 GeForce GTS 450 1Gb
SB Audigy 4
Spyware Doctor with AntiVirus