A simple program using cloning, sensing and colours to simulate the spread of infection. How quickly can it spread? My tests show 48 seconds as the record! Version 2 of the simulator lets you choose the number of peeps to experiment with the spread of the plague! https://scratch.mit.edu/projects/91475869/
I saw one of these online and have copied the idea but it was so long ago I have no idea who came up with the original idea if it was you then thanks!