| I found one that looks like it is periodic and so will run forever. See first image here [1]. This evolved from clicking using the pattern that is 3rd from the left on the top row. In chess notation it is the one black on c1, e1, and d5. The darker areas appear to move down and right, with new ones coming on the left as the olds ones disappear off the right and bottom. It is at least a little bit resistant to damage. I accidentally clicked in the middle of the lighter region messing up the regular pattern there. That persisted for just a few steps and then was absorbed into the regular pattern. This could really use a way to slow it down or single step it to see what is going on. Oh cool. I tried clicking a few more times to introduce several anomalies. It seemed to absorb them but with a change in pattern, so that it had 3 diagonal stripes that no longer seemed to move, but the two outer ones were cycling through some fixed patterns, and the middle one had some diagonal lines that appeared to move through it. I don't think it was quite repeating. And then it just stopped. I thought maybe it crashed, but I clicked inside again, and it filled from that click, so it is still running. It just finished all its filling. It now has 3 regions: (1) a large solid color that if I click in there changes between black and white. (2) a dark grey region that if clicked in results in small black or white triangles, which can be grown by clicking in them again. It effectively dampens that damage so it does not spread far. (3) A region full of squiggly lines. Clicking there either just messes up a couple pixels or it infects one of the squiggly lines turning it into a black bar. See second image here [1]. [1] https://imgur.com/a/UkUQ4nE |