You used to be able to play Halo 2 online but sadly you can not any more and goes for all other original xbox games too. :(
with a 360 NO. but you can play halo 2 on PC for free
They stoped online play for Halo 2 back in June 2010. And you need Xbox LIVE to play halo 3, however on the new Xbox 360 u can play halo3 online for free
Yes.
Yes.
i dont think many people play halo 2 pc, but alot of people play halo 2 xbox with xbox live!
Well, halo 2 is a xbox oringanils but is not avalible for download. but still you can play halo 2 on your xbox 360 if you buy it at a store, or order it online.
halo is only on xbox 360
Yes, Halo 3 can be played in local co-op campaign and in local and online PvP multiplayer.
not yet, but if u go to the mirosoft website, there's a halo 1 trial. (u can even play online)
Play online and kill loads of dudes
You can play halo games online at addictinggames.com, where they have a wide variety of free games, and many of them are similar to halo. I think you would enjoy playing on that website.
Yes, you play as the Arbiter in certain halo 2 campaign levels. I believe there are mods too. You can also select Elita as a character model in halo 2 multiplayer.