An original take on the theme =)! I liked the concept, it's a pretty good idea, and the graphics were simple but efficient, so nothing wrong here ^^.
The gameplay is enjoyable, even if I think the hitbox should be a little more forgiving. I think the goal of the game is to test the player's memory, not his precision to go perfectly at the center of the squares, ^^.
I would have liked some sounds and music, it really adds a lot to the atmosphere and are (usually) not very difficult to implement, so they are quick-wins for game jams ^^.
Overall, that's a cute little game, a bit rough around the edges but with a lot of potential, that I enjoyed playing, so good job =)!