The gameplay in Step Box is straightforward: when you tap a Box, it moves in the direction indicated by the arrow. But, if the square passes over a tile with a different arrow drawn, the arrow will change direction. Likewise, if a square goes through the teleporter, it will arrive at a different teleporter. There is a reason for every change.
Given these rules, and given that one square can push another, you'll have to try to get each square on its corresponding star. There are only two colors at first, but a third will be added, and then a fourth.
Step Box is a very original and stimulating puzzle game. It's a fun challenge for puzzle lovers.