Product Description Gravity Maze is one of ThinkFun's most popular stem toys for boys and girls. It's a gravity powered maze game that comes with 60 challenges of increasing difficulty, from beginner to expert, and makes a great birthday or holiday present for kids who like puzzles, smart games and challenging activities. 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 has an educational aspect - it's built to develop critical thinking skills and tie into STEM subjects like science and engineering. Playing through the increasingly difficult brain teaser style challenges will sharpen your mind by improving logical reasoning, spatial reasoning and planning skills, all through fun gameplay. Like all of ThinkFun's games, it also makes a wonderful addition to any homeschool curriculum. For over 30 years, ThinkFun Inc. has been dedicated to creating games that spark curiosity, cultivate confidence, and nurture life-long learners. Its games encourage interest in Science, Technology, Engineering and Math (STEM), while generating excitement for a world of learning through play. Innovation, creativity, value and fun are the four elements that comprise the development of every game. Ignite the mind, and change the world for each player. Safety Warning Warning! Not suitable for children under 36 months due to small balls - Choking hazard. Box Contains 1 x 1 game grid, 60 challenge cards, 9 towers, 1 target piece, 3 marbles