https://www.youtube.com/watch?v=wVCPZgmiXw0
The size and grayscale changes of cells are not just animations. When calculating the number of neighbors, if it is half the size and half the grayscale, then it is recorded as 0.5, not 1 neighbor.
By the way, if you are interested, you can also take a look at the 2D version:
viewtopic.php?f=11&t=6461