Played your game and it was pretty good. Looks kind of like Q*Bert. I would recommend fixing the lighting so that the white rim doesn't show on the tiles as that was very distracting.
Maybe you could even create a timed mode where you have a certain amount of time to complete the level?
Could also have different tile types , maybe some trap tiles that take time away from the player or something.
Anyway Great Concept , Lots of Potential, Keep up the great work!