It isn't a bad game. Though I'm sure we have all played this type of path finding puzzle game before. And it really doesn't add anything new to the game. But that is not the reason I am reviewing. There is a problem with your scoring. So long as you do not play the final level in a set you can replay levels as often as you want and rather than replacing the previous score for the level it adds the new score on top of what you previously got. In other words you can get an infinitely high score by simply replaying the same level over and over again. So long as you don't submit your score this tally remains intact.
This, as you can imagine makes the high score table defunct. I would suggest you fix it so that each level has its own score rather than just adding to the total score each time it is played. If you can't do that the same effect can be achieved by simply making it so that levels can't be replayed without restarting the game. Obviously all involved would prefer the former.
Just a thought.
As I said though, it isn't a bad game but it also isn't anything overly interesting or mind-blowing. Keep up the good work and look into fixing that.
3/5 and 6/10