Since Call of Duty’s premiere in 2003, it has always been a promising series, with each instalment selling more units than the last. The biggest gap in sales occurred between Call of Duty 3 and Call of Duty 4: Modern Warfare. Call of Duty 4 sold over 100% more copies than it’s Call of Duty 3 counterpart. This is when many say the series took off into the giant that it has become today, and will remain for the coming years. Call of Duty 4 is still, to this day, hailed as the best Call of Duty ever, but does it deserve that reputation?