I would have to say Call of Duty 4.
It does not have a zombie mode, which is good because when did a zombie Nazi come attack some random soldier? Never, that is when. I deal with science fiction games, but not science fiction games that effect a serious war.
Call of Duty World at War though is pretty nice as of the bigger maps and nicer graphics. I must say it is a tie or Call of Duty 4 leading by just a little.
cod4 all the way thats why 2 years its still 50$ and waw like 1 yr still 50$ 2yrs>1yr and cod4 was the most bought and u guys r dumb there is no cod5 its cod waw. cod waw uses cod4 engine cuz they can't make there own engine they like the fucking same graphics.

