As the first home console ever, the Odyssey ran on batteries and games came on removable circuit cards, not cartridges. The Odyssey tragically lacked sound capability, but that was later rectified. Also looks uncannily like a defibrillator… More here.
I would love to say that there are some fond memories here, but I don’t remember many of these. Still, it is good to see what helped to create what we have now and that feeling when I first played Pong at home as a young child will never leave me.