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The standard type of this puzzle is a mechanical puzzle where you have to maneuver a ball through a maze, trying to get it from a starting point to a goal, without falling through any of the other holes in the maze. You can only manipulate the ball by tilting the entire maze, using gravity to move the ball.
MIT Mystery Hunt 2006 Grid with a Hole in the Middle
MIT Mystery Hunt 2020 Toddler Tilt