Call of Duty 4 was a big hit for single, split screen, and online game play.  Call of duty 5 will continue the tradition of that exciting game play and will top the charts with its online play.  Call of Duty 5 will have 2-4 player split screen and 2-player co-op game play.  One downside about Call of Duty 5 is that it is going back to World War II,  which is a big disappointment to some of the fans.  Nevertheless it will be the one of the best World War II games yet.  Some of the things that will insure this are a few new weapons, which include the flamethrower and the bayonet along with the original weapons.  It also has a new environment, and a whole new enemy, the Japanese Emperial army, which is extremely different than any army ever in Call of Duty, by using whole new tactics.  Some of these tactics include tree-climbing snipers and digging spider holes which creates an extremely difficult A.I.  Also they have taken the x.p. System, perks, kill streaks and challenges from Call of Duty 4 and improved it and enabled it in single player and co-op.  There will be much more of a challenge because they have raised the prestige level to 65 instead of 55 and new rewards will be given out each time you prestige.