This sliding puzzle game brings out new features when maximizing your score.

One of them is cube mode.

3D mode.

There are top and bottom, sides and back.

In other words, it is not possible to grasp all the arrangements at a glance.

Cube mode requires flexible short-term and medium-term memory for slides.

It can also train movement-flexible short-term and medium-term memory.

Cube mode and non-cube mode are very different.