User blog comment:Subject 12/Assassinews 04/07 -- Assassin's Creed III at PAX East/@comment-125.209.138.168-20120412223426/@comment-4975789-20120415162533

Split-screen multiplayer would be pointless, as you could look at your opponent's portion of the screen and see where they where. Remember, the whole point of Assassin's Creed is stealth!

Co-op might work though, as could having two people playing split-screen online but on the same team (similar Halo and CoD).