Automata: Like the Game of Life, but with violence

The big surprise to me is that stability is possible in this game. Most of these games end in less than 60 seconds. The first several games I let run had unstable dynamics: one side gained an advantage and grew and grew until it took over the whole board, usually in less than a minute. But later, through experimentation, I found that stability is possible.

The corners seem to be especially stable. I waited until the game had consolidated to 3 colors, then I created 4 new colors and added them to the corners (I slowed the game down to 500,000 milliseconds so I could have time to paint the corners, then I went back to 30 milliseconds). With 4 corners held weakly by 4 colors, and 3 large colors holding the center, the game is remarkably stable. I watched it, in the background, for several hours. One of the corners disappeared, but the other 3 corners held on. I went off to bed. In the morning, 2 more of the corners had been swallowed, but 1 of them still survived. These 4 surviving colors have been battling now for over 24 hours. The game has reached equilibrium.