It's an incredibly inefficient way to make a game, but you could check out Handmade Hero by Casey Muratory. I'm not speaking at all to the overall quality of th

It's an incredibly inefficient way to make a game, but you could check out Handmade Hero by Casey Muratory. I'm not speaking at all to the overall quality of the work. But he definitely bootstraps the game from scratch and there is a ton to learn about the low level graphics and input systems. https://guide.handmadehero.org/ https://guide.handmadehero.org/ Day 004 is where he actually starts drawing on the screen. So about five hours in if you skip the C intro. Or you could start writing to the screen in under 30 minutes with some basic libraries like SDL. In my experience most game devs, even those who want to write the code and not live inside Unity are using some OS/Graphics/Input abstraction library. https://examples.libsdl.org/SDL3/renderer/02-primitives/ https://examples.libsdl.org/SDL3/renderer/02-primitives/