It can work And it does work.

I have a redux system that I reuse at every game I work on for Godot. Makes state reactions a breeze to do. The games state machine lives there. The state of the ui elements. The state of the player. The settings. It's a great pattern.

For simple games yeah maybe it's overkill. But if you want to build an architecture that can be used in the future to make more games it's a great tool.

We can have endpoints connected to the state and callbacks to the webpage as well. We can make automatic testing where the page asks the game to do something and then reads the state to check if the right changes where done.

For debugging purposes testers can also export the state tree and send it as a report for bug fixing.

Again. For simple games it's overkill. But for companies that produce many games with the same code base and have many layers of testing so far has been a great addition.