Moon Spinner is one of ThinkFun's most fun new stem toys for boys and girls. It's a fun twisty rotating brainteaser that is fun to scramble and challenging to solve, and is one of the best gifts you can buy for kids who like smart games and a challenge. Moon Spinner is made with high quality components and comes with a very clear and easy to understand instructions - you'll be able to play within minutes of opening the box. Like all of ThinkFun's games, Moon Spinner is built to develop critical thinking skills. Playing through this addictive brainteaser will improve visual perception, logical reasoning, and critical thinking skills, all through fun gameplay.