Call of Duty : Ghosts (the not optimized for PC version)
I love all of the CoD games....this one however was an impulse purchase without reading anything about if first.
Even with a top of the line rig, the graphics look cartoonish and it's a corridor shooter. You get pushed along through what looks like awesome environments, but can't really stray too far from the path ahead..
Some neat things tho, like remote snipers and drones...and you get to be Riley, the German Shepard as he attacks guards, etc
I've settled on some graphic settings that work for my rig...and it is CoD mayhem...so in the end, shooting hundreds of dudes with varied weapons wins the day!