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A Light Box (also known as a Beam Box in PAL versions) is an object appearing in Super Mario 3D World. Like the Propeller Box, Coin Box and Cannon Box, it can be worn over the player's body. Light Boxes can be found in sets of four (one for each player) inside a Ghost House. Upon wearing one, the block will change into the color depending on the character (red for Mario, green for Luigi, pink for Princess Peach, blue for Toad, and cyan for Rosalina), and the lamp on the front will emit a beam of light, which can be used to not only light up any dark spaces in front of the player, but also to defeat ghost enemies, such as Peepas, Boos and Big Boos. The beam of light must be shone on the enemy for a short period of time to defeat it.
Players use Light Boxes to damage King Boo in King Boo's Light Smite in Mario Party: Star Rush. Later in the fight, a large, gold Light Box deals 3 points rather than 1 point, but they are heavier to carry. In this minigame, players carry the Light Box rather than wear it as they did in Super Mario 3D World.