Geobrix

Truly multidimensional, this puzzle has three separate challenge modes to confound and perplex the most dedicated puzzle-worker. 13 colorful, shaped pieces come neatly packed in a clear square tray. The simplest challenges object challenges require the puzzle-worker to create 20 different objects using the pieces. The second puzzle challenge is to put the pieces back in the clear tray from whence they came (there are 18 different ways to do this good luck finding ONE). The ultimate challenge is to use all 13 pieces to build a 3D cube. I love that this puzzle is both multi-level and that it has multiple solutions to discover, extending its play-life. Play alone or purchase two and race to complete the challenges. Thankfully, a solution booklet is included - in case you reach the point where you doubt there's even one solution!