Call of Duty WaW is more realistic and fun to play. The zombie easter egg with other people, but Halo is cool if you want to play with friends.

I prefer Halo 3 because it's way better than being some super soldier that can't really die.

I agree, Call of Duty is way more realistic than Halo 3. You have better stealth levels than Halo.

I would have to say that Halo 3 has a great online playmode, and it's campaign definitely has it's strengths. However, Call of Duty Modern Warfare, and World at War have a much more immersing campaign. You actually feel for characters in the game, and the campaign is played out beautifully. Sure, Halo 3 is much better to play with a couple of buddies over in campaign, but COD's level design and storyline far outplays Halo 3's 'far out' campaign.

First, I would like to say that X-Box is a way better gaming system because even though they say that the PS3 has better graphics than the X-Box but both gaming systems have such good grphics that it only matters what TV you have. Call of Duty 4 is better than Call of Duty 5, and it depends on your interests for whether you would like Call of Duty 4 or Halo 3 better. Personally I like Call of Duty 4 better because in Halo 3 you have to put 3 clips into the other people for them to die. I don't like that, but some people do.

Call of Duty because your can play each other.

Well, I've never played either but I have played the first Halo and Call of Duty and I think Halo is better.

Hi I’m Cassie from the United States. My boyfriend and I have a ps3.  He likes Call of Duty World at War. I personally used to dislike the game. He would spend hours on end playing, talking on his head set to everyone on line, then he started playing the zombies part of the game, and one day to make him angry I decided to take the controller and not let him play, since then I’ve come to like Call of Duty. When I first started playing zombies, it was thrilling, the zombies would scare me when they would pop out of nowhere and kill me. It’s one of those games, where you don’t want to stop until you do better than the level before. Now I’m the one asking him to play all the time. So your answer to that question is Call of Duty is way more fun than Halo 3.  Yes Kelsey, the graphics are awesome.

Call of Duty is the best. The russian campaign is the best:)

I love Call of Duty but the new Halo is amazing, so get that.

Call of Duty 4 is the best Call of Duty there is because it's the best for glithces. There are so many you can do on Halo. There is a few but they are not as good as the one on Call of Duty 4.

Call of Duty is better because more people have it.

Ithink they're both good. But I think Call of Duty is better.

I myself am a Halo 3 fan. I am waiting for Halo to come out but Halo rules.

Call of Duty is tons more awesome and Halo is so boring. In Australia, Call of Duty Modern Warfare ll is coming out, but over in America it might already be out. I have never played Call of Duty World at War.