The double flag is a 4-player slit-screen minigame. All players play at the same time.
Players must press the + and shake their wii remotes up or down to raise or lower their red flag, press the A button and shake their wii remotes up or down to raise or lower their white flag and press the A and + and shake their wii remotes up or down to raise or lower both flags.
Players must raise or lower a certain flag or both flags each time when prompted to do so by a voice command. Sometimes the voice command will try to trick the players by saying the color flag(s) and saying "don't lower". After a certain number of commands have been given, players will be prompted to turn around (Turn your wii remote 180º). Reacting to the command the fastest will get you more points.