Multiplayer Confusion

Games Other Halo
1

There have been so many different things about how MP works. Ive heard the following.

  1. If you have reach installed on your HDD you can play all the reach maps plus the CEA maps from the CEA disc.
  2. If you have reach, CEA comes with a code to DL the CEA maps to play through Halo Reach’s disc
  3. If you don’t have Reach then you can only play the CEA maps playlist from the CEA disc,
  4. CEA has all the maps and works like ODST’s 2nd disc but its Reach minus the campaign.
2

CEA’s MP functions as an isolated map pack for Reach.

From the CEA disc, you can play Reach competitive multiplayer and firefight, but only on the CEA maps.
The game also comes with an option to download those maps to your 360; if you do this, they behave exactly like a map pack for Halo: Reach, and you can access them from Reach.

As far as I know, having Reach installed does not imply that you can play Reach’s maps from the CEA game.