DOUG SOLUTIONS Inside3 Mean0 cube maze orange

The Inside3 Mean0 is a three-dimensional maze in cube form, designed to be played blindfolded. A ball sits inside the cube and becomes visible from below or above depending on its position, so the player must rely on what they can see, hear and feel to guide it. Both sides carry a map of seven sections that shows the route the ball needs to follow.

Solving it takes logic combined with sensory awareness, since the ball disappears into the dark and has to be steered by sound and touch. Mean0 is the third level in the 0 series and suits players who have mastered Easy0 and Regular0. The mazes are more demanding than the earlier levels but remain solvable, and the cube can be taken apart.

The cube measures 6 x 6 x 6 cm and weighs about 150 g. It is designed for indoor use and suits teenagers.