As many here, I had to read the description to understand how it fitted the theme.
It's a good idea but it wasn't visually striking so I personally didn't notice it. But I think the main problem is that you didn't choose between grid movement and free movement. It looks like grid movement because of floor tiles and not being able to move diagonally but actually it is not (I had to go back and check when writing this because I actually thought it was...). Because of this, the collision boxes are really weird and you end getting stuck somewhere instants before a monster gets you.