I believe so. Not all original Xbox titles do, but I'm fairly sure that both Halo: Combat Evolved and Halo 2 do.
Yes, Halo 2 also works for the xbox 360
Halo: Combat Evolved does not have Xbox Live compatibility.
Xbox has no hacks
Indeed, Halo: Combat Evolved for the Xbox is multiplayer.
Yes, it is.
yes bungie is now making a halo combat evolved remastered version and a halo 4 and on this one you can play xbox live again.
yes but you have to hook up ur xbox with the PC
No, it is only on the old xbox, but you can play some of the old xbox games on xbox 360 and Halo: combat evolved (halo 1) and halo 2 are two of them.
Yes you can
Halo: Combat Evolved was released November 15, 2001 for Xbox.
Halo Games: 1. Halo: Combat Evolved (Xbox, PC) 2. Halo 2 (Xbox, PC) 3. Halo 2 Muliplayer Map Pack (Xbox) 4. Halo Triple Pack (Xbox) 5. Halo 3 (Xbox 360) 6. Halo 3 O.D.S.T (Xbox 360) 7. Halo reach (Xbox 30) Other Halo Games: 1. Halo Zero (PC) 2. Halo: Custom Edition (PC) Future Games: 1. Halo Wars (Xbox 360) 2. Halo: Chronicles (Xbox 360) 3. Halo 3: Recon (Xbox 360)4. Halo 3: ODST (Xbox 360)