What is the most popular video game series

The Halo series is the most popular game series. It is better than Call of Duty: Black Ops.<--- this answer was not by me the one below was ::coolguy::


Ok now i do agree Halo is a little funner than Call of Duty black ops. I have to say though the only real answer you can get is by looking up the sellings of the video game series. There are people out there who think the COD (Call Of Duty) is better than the halo series. Other people like the Jak AndDaxter series, the Alien/preditor series, etc. There really isn't a stable answer for this question