You can play "Conway's Game of Life" with FFmpeg command line tool. I'm not kidding.
Let's generate GIF animation with worldsize=60x60 generation=...
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Ah cool!
Is this just an Easter egg?
FYI: "life source" was available from anchent version 0.9 (commitlog). The author said "proof of concept" (ml-post) :D
RIP John Conway (xkcd.com)