I N S I D E 3 it's easy
It is a 3-dimensional maze that is played blind.
We release the ball, watch it go (apprehensively) in the dark, and try to get her out the other side. By simply following the plan engraved on the surface. And if it's still unclear, see the "I'm lost" (we won't judge you, promise).
For beginners, the learning cube to practice or challenge friends. If you are terrified, start with the Easy noVICE. It is even simpler and shorter.