Comment by jbverschoor

I think there’s a misconception due to the large overlap between games, graphics, and physics engines.

Graphics are anything from rendering 2d, 3d, shaders, scene graph, animation.

Physics and related interact with the scene graph.

The game part allows for dynamic behavior and of course the game logic/triggers.

Add some ui, and resource management, abs lastly of course ai.

Creating your own engine with different architectures is indeed the best way to learn how/why an engine works. But alll the details that come with it. That’s really a lot and probably way too much for one person. You’d be surprised how much is in there (in unreal engine)