MikeB on 25 June 2007
@ konnichiwa
Ok X360 and PS3 don't have DirectX 10 but could this not be downloaded?
No, DirectX is a Microsoft-only software layer. OpenGL / MesaGL is an open technology, so games can be easily ported to rival systems (first OpenGL or MesaGL needs to be ported). Developing games for DirectX, make them hard to port due to the DirectX' design given by Microsoft, porting towards fully capable or even more powerful rival systems is very hard.
For example for Amigas there is MesaGL (open), Warp3D (closed) and more of a hybrid of the two are available to developers.