SYMPHONIC COOPERATION
Players thinking and acting like a team in a cooperative multiplayer environment, or the existence of a system which encourages such play. Symphonic teams can use group strategies and work toward common goals in a multi-goal environment, unlike their chaotic counterparts.
“And, when it all works, when that potential for symphonic cooperation turns into a real symphony of team support, considered positioning and complementary skillsets, Left 4 Dead is a triumph.”
See also: CHAOTIC COOPERATION