Blockazzle is an elastic bar which is composed of 12 cube blocks tied with an elastic rope. With special groove on each cube, Blockazzle allows kids to rotate cubes to build many different 2D & 3D structures. Kids can also use Blockazzle to challenge 3D puzzles included in this game set to practice on logic thinking, vector & space basics. Blockazzle is well designed to carry & play wherever you go. Enclosed USL cubes work as an aide to little kids or beginners. For 2 players, they can compete against each other for building the given structure on flash cards. While for 1 player alone, one can use the two Blockazzle bars to create more puzzles with challenging fun, it is also encouraged to create more puzzles with your own thoughts.