Retro Game Mechanics Explained is one of my favorite YouTube channels of all time. There's an absolute treasure trove of interesting technical deep-dives about the inner workings of retro games, famous glitches, and how the hardware works. And it's all presented with clear, silky smooth animations that make everything so much easier to understand.

I'm not even into retro games that much, yet the content is so good that it has me completely hooked anyway. I'd highly recommended it for anyone who wants to learn more about computer science or the clever techniques programmers used to get things to run on old hardware.