I played this alot with my friends,but only because that's what everyone was playing and anything is fun wtih friends.Seriously,completely unrealistic combat,un satisfying weapons,dumb maps,glitches,prestige mode gives you nothing,obviously online idiots but thats in most online games,and a terrible unbalance of power in the weapons.Seriously the M16 is the worst assault rifle ever made and in CoD it is the best gun bar none.I hope they fix Modern Warfare 2 cause damn did 4 ever suck.World at War is alot more realistic in terms of the weapon balance and story.And also Nazi Zombies is freakin awesome,it's better than Gears 2 horde mode its kicks ass.