Supreme Commander 2

Supreme Commander 2 is a real-time strategy game by Gas Powered Games who also designed the first part of the series which features epic battles between hundreds of units. Compared to the second part the number of different units and buildings has been reduced, as well as changes to the tech tree and a general reduction of map size.
Even though the engine is DirectX 9, it features state of the art global illumination and handles even large numbers of objects and effects with decent speed.

Unreal Tournament 3

The fourth game in Epic's highly successful Unreal Tournament Series is simply called Unreal Tournament 3. It is based on the Unreal 3 engine which is a major step forward from the previous engine. The game principle is centered about an arena style gameplay where several contestants try to reach a certain kill count or capture a flag for example. For its time, the graphics were top notch, with large and detailed textures. Unreal Tournament 3 is an important benchmark because its engine has been used in a large number of other titles, and there are even some in development using it. One major drawback of the way the engine is designed is that there is no support for Anti-Aliasing.