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.
Far Cry 2 also manages to perform well and much better then the HD 5770. We can see we've got over 30 FPS at 1680 x 1050 and near it at 1920 x 1200 on the HD 6670. The HD 6570 doesn't break the 30 FPS minimum we want but at 1680 x 1050 we're right on the edge.