You can make every scene self contained, or have it communicate in a framework (could be signals, could be calling from a scene) You can store data anyway you

You can make every scene self contained, or have it communicate in a framework (could be signals, could be calling from a scene) You can store data anyway you like, so content can be a file, can be in a database, can be through a c++ extension. Creating a game is often mostly about these choices I found. Whatever engine or language you are using. Maybe Godot just gets you faster to the point where you think about them?