Ars Technica notes that the official Smash Bros. Brawl site is now discussing a co-op play mode for the game. You'll now be able to team up as your favorite Nintendo characters in a vs. Computer story mode.
"While the adventure mode was never really the best feature of previous Smash Brothers games, playing through with a friend will likely yield some great gameplay experiences ... Other notes on the mode include details on the camera, which will follow the first player in a way that appears similar to the handling of Sonic and Tails in Sonic 2, an overworld map which hints at a fairly lengthy adventure, the ability to create multiple teams, and five levels of difficulty ranging from easy to intense."