Although simple to understand, this 3D brainteaser will provide hours of addictive fun! Brainstring is a 4" transparent cube with 12 elastic strings that stretch from side to side. The object of this brainteaser sounds easy: switch the outside button colors WITHOUT entangling the strings! Move each button one-by-one by simply gripping and lifting the button, pulling it and the attached elastic into its new position. The level of challenge can be adjusted according to how much the knot is tangled inside the Brainstring cube.
The smart design of Brainstring makes it a great executive gift or coffee table game. And since there are no pieces to lose, this brainteaser is ideal as a travel pastime as well. Brainstring is recommended for ages 7 and over.