Call of Duty has sales for the Nintendo, Playstation, and Xbox systems and sells more that the Halo Series. On the Xbox 360 only Call of Duty Black Ops has sold 12 Million and Halo 3 is only 8 Million and just slightly ahead of the Modern Warfare 2 with 7.5 Million. Halo Reach does not even have the sales of Call of Duty Modern Warfare and Halo 3 ODST is below Call of Duty World at War see related link
The Call of Duty Franchise has sold 102 million copies and less than Grand Theft Auto 114 Million, The Sims 150 Million, Tetris 175 Million, Pokemon 207 Million, and Mario 262 Million see related link Halo is around 40 Million with Guitar Hero, Harry Potter and Tekken
probably halo but call of duty is way more fun!
Halo 3 is more popular then any Call Of Duty In fact, Halo 3 is the best selling FPS of all-time :\
no call of duty has two companies working on it and way more games than halo and the multiplayer mode has combat training if you need help playing but that's the just the beginning of it
Call of Duty Black Ops.This is because Call of Black Ops has came into a later year making it have more improvements but Halo 3 is a older game. But a very good match against Call Of Duty BlackOps is Halo Reach.
it just depends which you like better. they are both great games. i enjoy Halo a lot more than COD though.
Halo 3
AnswerHonestly, more people play Call of Duty. A good decent amount of people still play Halo though.
call of duty gangstar halo and way more shooter games
Call of duty is more realistic than halo and contains more blood. Call of duty also allows you to knife so in many ways halo is more appropriate but it doesn't necessarily mean its more fun.
There is call of duty roads to victory but There is no more call of duty Games
in my personal opinion i would have to say cod the only halo games i really like are reach and the 3rd halo
Call of duty easily, COD & Halo are the most popular FPS'