Far Cry 2
The Dunia Engine was built specifically for Far Cry 2 by the award-winning Ubisoft Montreal development team. It delivers the most realistic destructible environments, amazing special effects such as dynamic fire propagation and storm effects, real-time night-and-day cycle, dynamic music system, non-scripted enemy A.I. and so much more.
Looking at Far Cry 2 performance under XP we can see that the numbers are impressive. At 2560 x 1600 we're able to beat the GTX 285 and break the 30 FPS minimum which the GTX 260 SOC and the Palit GTX 275 wasn't able to do.