Call of Duty Summary
Former Infinity Ward employees have spilled the redacted beans on the original Call of Duty's development back when the studio first formed. Medal of Honor was the first-person shooter King at the time.
Apparently Call of Duty was codenamed 'MOH killer', even though its initial design was similar to MOH: Allied Assault, which followed the "super-spy in WWII story" formula.
Randy Pitchford has revealed that Activision offered Gearbox the chance to develop a Call of Duty title, but the studio turned it down.