As is tradition, between Christmas and New Year the Chaos Communication Congress or C3 for short by the Chaos Computer Club, Germany's most well known hacker group, takes place. There are lots of talks, workshops and more about a broad range of technology, media and politics.

Yesterday, a talk was given on how to create a CPU in Factorio. The talk was delivered in German, but if you scroll down to the download section you can download either a video file embedded with an English translation or just an English audio track.

If you are interested, here is the media page with past talks and the stream of today's events.