Thicker tiles for the entraces for zombies 2, 3, 4, 5, 7, 8, 9, 11, 12, 13, 14 and 15. This allows for easy shuffling when using the thicker tiles for Zombies!!! 20th Anniversary Edition.  Does not ship until December of 2021. If this is ordered with other items, the entire order will not ship until December.