Between “Call of Duty: Black Ops” and “Call of Duty: Modern Warfare II”, sales totaled over $1.2 billion… in the first 5 days after release. Gamers around the world flocked to stores for midnight releases of the games. Some paid extra, up to $170, to get the special editions of each game, which included working night-vision goggles for MW2 and a camera-mounted RC car for BO. What has made this game franchise so immense in just 7 years? With 4 of the top 10 best selling games of all time wearing the COD badge, Activision’s prized possession has dominated the 1st-person shooter arena and shows no signs…