Overwhelming, addicting, guaranteed to drive away boredom! "Groove Tube", the portable puzzle game with the hidden labyrinth! Inside the colored tube there is a stamped groove labyrinth that you cannot see - you have to imagine it! The goal is to find your way through the labyrinth by twists and turns and free the tube from the rod. Feel the right way out of the labyrinth and solve the puzzle. There is only one solution for each “Groove Tube”. If you get stuck, you have to find the right way back to the beginning! Available in six different colors with six levels of difficulty, from "light yellow" to "terrible black". Dimensions: Height 21 cm, Ø 6.3 cm Made in Germany Delivered in a transparent PVC tube, some of the goods are loose.