ThinkFun 36 Cube is a fun, Sudoku-style 3D puzzle that offers a satisfying challenge for both kids and adults. This complete set is barely used and in excellent condition. Players build a cube by fitting colored pieces together so that each color is represented in every row and column. This puzzle is a great way to develop spatial reasoning, visual perception, and critical-thinking skills. Suitable for ages 8+, it’s perfect for puzzle lovers, families, or anyone who enjoys brain-teasing games that go beyond the flat page. Cash only please.