1 Game Grid 10 Gravity Maze Towers 3 Stainless Steel Marbles 60 Challenges from Beginner to Expert Instructions Select a challenge card and position the towers on the grid as shown. Now, determine where to place the other towers on the grid. Position the towers so that the ball falls from the Starting Position and crosses each lap before landing in the target Tower - YOU HAVE WON! Gravity Maze is one of ThinkFun's most popular stem toys for boys and girls, and was a Toy of the Year Award winner in 2017, in the Specialty Category. It's a gravity powered maze game that comes with 60 challenges of increasing difficulty, from beginner to expert, and is one of the best gifts you can buy for kids who like smart games and a challenge. Gravity Maze is made with high quality components, and comes with a very clear and easy to understand instruction manual - you'll be able to play within minutes of opening the box. Like all of ThinkFun's games, Gravity Maze is built to develop critical thinking skills. Playing through the increasingly difficult challenges will improve logical reasoning, spatial reasoning and planning skills, all through fun gameplay.