I love it because of its simplicity. The art is really nice and fitting for it, some sound is however really needed with such a simple concept.
You also could have made it a bit more challenging by using a timer per level, so the player only have X seconds per level. Or, a better idea would be to have pickups that you have to take before going to the goal, making you have to "save" a path so you can go back.
Overall a great game.