"Project Natal," pronounced "nuh-tall" -- a code name for the new way to play -- requires no controller. Microsoft said the technology will let players see the ball, catch it or kick it to interact with the game. The technology also lets players talk with virtual characters who detect the player's facial movements and emotions. The player converses with the animated character, which reacts based on the context and what may have been implied. The technology also recognizes objects, such as a piece of paper, as the player passes it from the real world into the virtual. -- Laurie Sullivan