[Free] CoD

     Call of Duty is one of the most successful game franchises of all time.  It is in the same division as franchises such a Mario and Pokemon.  Call of Duty was a huge leap in the category of first person shooters.  Infinity Ward, one of the makers of the games, revolutionized first person shooters when they released Call of Duty 4: Modern Warfare.  The new game engine and advances in guns, especially snipers, made Call of Duty 4 a big success.  A year later, Treyarc made the game, Call of Duty 5: World at War.  This game introduced a whole new aspect to first person shooters, zombie mode.  Zombie mode is a separate part of the game where you are stuck in a certain area and you and your team try to survive as long as possible against zombie attacks.  You can find super weapons in zombie mode, such as the ray gun, that do massive damage to zombies and cannot be obtained in the regular game. 
     Infinity Ward came back the next year with a huge hit, Call of Duty: Modern Warfare 2.  This game is the second most sold game in the Call of Duty franchise.  It is best known for its great sniping.  Many people play Modern Warfare 2 to quickscope, which is when you are scoping in with your sniper, but you shoot just before you are fully scoped in and can see ur opponent in your scope.  trickshooting with snipers became very popular and define the game to this day.  The newest game, Call of Duty: Black Ops is not liked by most people because of its difficulty in sniping.  However, it has sold the most copies, mainly because of its advances in zombie mode.  I can't wait until november when Call of Duty: Modern Warfare 3 comes out.