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 we can see not only does the HD 5870 CrossFire setup manage to smash the GTX 295 OC, here but also scales very well with the performance being doubled at the highest resolution which is fantastic.