Thanks for playing and rating the game! There are two sides as there is one side of gameplay that is focused on looking at the stage and remembering it, and the other one that is focused on giving the commands, and they're separate from each other! You could also interpret it as the side of the one cube, that is on the dark side, and the side of the player/command giver, who's at a control room of sorts.
Thanks for the feedback, also, I really appreciate it!