about bioshock and callduty 4 and gears of war..................................

Forst off gears is an amazing 3rd person shooter, the atmosphere it sets is astonishingly real, and the combat is smooth and a blast to run through on co op, not to mention it has the best graphics the 360 has to offer, Call of duty 4 is another extremely immersive game that draws you in with top notch gameplay, jaw dropping cutscenes, and the most realistic modern warfare experience out there currently Bioshock...well i don't know i haven't played it yet lol