Fabien Sanglard's blog is one of my favorites. He posts mostly about internals and implementation details of classic video/computer games, plus other tech like

Fabien Sanglard's blog is one of my favorites. He posts mostly about internals and implementation details of classic video/computer games, plus other tech like Git and USB. https://fabiensanglard.net https://fabiensanglard.net And if you find his blog to your liking, he has a couple of books doing a deeper dive into the internals of Wolfenstein 3D and Doom.