React's Component Tree Was Invented by Game Engines 20 Years Ago

If you build React apps, you already understand game engine architecture. You just don't know it yet. React's core idea is a tree of composable components, each managing its own state, communicating through props down and callbacks up. This pattern feels modern because React popularized it in 2013. But game engines have been shipping production software with this exact architecture since the early 2000s. Godot, Unity, and Unreal all use a scene tree (or scene graph) as their fundamental organizing principle. Every object in the game is a node in a tree. Nodes have children. Children inherit transforms. Communication flows through events. Sound familiar? Here is what game engines figured out decades ago that the web is still catching up to. 1. Composition over inheritance, but for real React developers talk about "composition over inheritance" like it is a React innovation. Game engines enforced it by design. In Godot, you do not create a PlayerCharacter class that extends Character tha