Kurosawa worked with a team of writers, cinematographers, actors, assistants, producers. Seven Samurai was designed by committee -- Kurosawa just happened to have been at the head of that committee.

This is true for almost every film in existence. Certainly every widely distributed film.

This is also true for games. Some of the best games are driven by a single person -- think Kojima and Metal Gear or Miyamoto and Mario -- but they are the product of many, many talented artists working their asses off.