Haha, I really did enjoy the graphics, that's definitely one way of doing them! It did make things easier to understand though, it was very easy to see which boxes had to join together to finish the level (and I suppose drawing a sprite for the invisible box would be a bit difficult). The shuffling sound effect was also a pleasing addition, it made movement quite fun, particularly on that level with 8 friends. And the puzzles were all so unique and interesting! Nice game, I really enjoyed it!