Really cool game! At first it feels like a pretty standard sliding-puzzle game, but a good one. The mechanics are great and I like the background, the music, and the animation of the little square a lot. The way it moves and deforms is fantastic and adds a lot of simple enjoyment. Then you start introducing the color mechanics and the game really expands. I've never played a sliding puzzler with these mechanics before and it becomes really interesting and challenging right away. You have to think outside the box to move through something, change your color, and then move back in the exact same direction but end up somewhere else. The one way walls a great! My one suggestion: The walls don't always feel intuitive to me and I have to really slow down and consider what direction will let me pass and where they'll make me stop. Maybe it's just that the game has a very high level of difficulty from the beginning. Still, great game!