Just discovered these when I asked Mastodon what OS I should use for a PC I’m building with my kid. Looking forward to trying them out!

https://hachyderm.io/@PeterBronez/112496363400912617

Nice work! Always satisfying to see an idea reach the real world

Both machines are on display at a museum in Germany. Volunteers have iterated on MMX to the point where is can play music https://www.smmk.de/marble-machines.html