Complex sentence: Released on November 7,2006, the game was developed by Treyarch, and was the first major installment in the "Call of Duty" series not to be developed by Infinity Ward, it was also the first not to be released on the PC platform.
Split into simpler sentences: Released on November 7,2006, the game was developed by Treyarch, and was the first major installment in the "Call of Duty" series not to be developed by Infinity Ward. It was also the first not to be released on the PC platform.