Ok this is what it is. Single player and multiplayer at the same time. It' s not simply online co-op with more then two people but it' s two (or more) opposing teams each trying to advance the campaign. Imagine playing the campaign and people can just jump in and replace an NPC to either help you or oppose you.
Very interesting stuff.
http://news.teamxbox.com/xbox/12800/The-Crossing-Coming-to-Xbox-360/
< Message edited by Agent Ghost -- 16 Feb 07 22:52:36 >