Bungie Studios confirmed on Tuesday that Halo 3 will feature up to four player co-op in Campaign mode on Xbox Live or System Link.
The four player co-op mode is said to significantly increase Campaign playability according to Bungie. Player one will control the Master Chief, player two will control the Arbiter, and players three and four will get the chance to control two brand new Elite characters respectively named N'tho 'Sraom, and Usze 'Taham.
"We've been playing it for quite some time, and bluntly, having some of our greatest ever Halo experiences," a Bungie spokesperson wrote on the company's official blog. "We wanted to make sure all our 't's were crossed and our 'i's dotted before unveiling this important new part of Halo 3's Campaign mode.
"Like every other aspect of Halo 3, this mode is chosen from a Lobby. Simply select Campaign, choose your network (Xbox Live or System Link) and invite your friends to join you, or they can simply join your session once it's set up and in a lobby (but they cannot join a game once it's in-progress). They will pop into your lobby instantly, and when you have all the players you need (anywhere from one to four) you can begin the game from the beginning - or from any of your saved checkpoints.
"Split-screen co-op is as ever, limited to two players per screen - but they can if they wish join two other friends online or via System Link."
Click over to Bungie's blog for complete details.