Hard to understand in the beginning, also because I couldn't see the colored arrow at left and right.
Even though, once you understand how to play, it's fun and, still, not easy.
It would be cool to know more than one turn in the future, so you can plan better. Or, for example, after one color there is always the same one.
But still, an enjoyable game. It would be cool to see this 4 dimentions-thing more developed in the future