PlayStation 4 launch character platform game Knack will have a drop-in, drop-out co-op mode. Sony shared first screenshots at the Tokyo Game Show.
A second player can enter or exit the main game at any time as a silver Robo Knack, who can donate his gathered relics to the real Knack when he is damaged.
This would allow more skillful players to assist less skillful players in difficult situations.
View the screenshots at the gallery.