I don't think there really is a game mode, just a picture setting like standard, cinema, vivid etc...thats called game, Im not sure if its any different than the other settings when it comes to lag. I have ben playin in game mode and I can't even buy a kill in black ops 2 (alright I get a few but its alot harder than on my old 40 lcd) Im not sure how to explain it, I don't think its lag, its more about aiming and keeping crosshairs where I want them, maybe its the jump up in size or the lack of lag, Plasmas are suppose to have less input lag than lcd right?
I also noticed on games like blackops they seem to be really dark even in game 'Mode" but when you go to graphics and change the in game brightness it wants you to turn it all the way down because that middle box is lit up like a christmas tree and if you do that its way to dark and people can see you but you can't see them because there in a shadow thats not suppose to be pitch black. Im still tryin to find a good setting between the in game brightness control and the tvs contrast, brightness etc...... Maybe the Im not use to the black level this tv has, its really inky
This tv has a beautiful picture though when watching BD and Football, basketball looks good too except the tv changing constantly from dim to bright and back to dim than bright and this is with C.A.T.S off, only notice it when watching basketball for some reason