Before the launch of Halo: Reach, Bungie promised that the online co-op campaign game was also accessible via matchmaking, while those who bought the stock for now discovered that you can only play with friends without the possibility to search for online games. The developers have now said not to have activated immediately to avoid this possibility to those players that have not yet finished the game happen in co-op levels that have not yet seen in the individual.

However, Bungie has confirmed that the matchmaking service to meet the campaign is coming soon, in early October. Levels that will be played will be selected, as with other modes, by vote: but if the final choice should not homely for any reason, we can withdraw prematurely from the game. The update will also include other modes and new maps drawn with Forge. We look forward to know the exact date that we'll have our matchmaking co-op on the campaign.