Russian company Unigine Corp has created a new commercial graphics engine targeted towards video games and visualization applications, that runs on Windows and Linux and supports almost all modern hardware.
Supports Intel 32 and 64-bit or 64-bit PowerPC, uses the capabilities of multicore processors and is compatible with at least 3 families of compilers: Microsoft Visual C + + 2005/2008, Intel Compiler 10.1 and GNU Comppiler Collection (GCC) versions 3.4 and 4.xx
A demo is available on their site, and the visuals are pretty impressive. It requires at least an nVidia 6xxx chip or an ATI Radeon R5xx or better, and supports both SLI and CrossFire.
