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In Unity, the method that is specifically called every frame is the Update method. This method is designed to be called once per frame, making it ideal for handling tasks that need to be checked or refreshed frequently, such as updating the position of objects based on user input or animations that should change as the game runs.

The primary role of Update is to help developers manage game behavior that occurs continuously throughout gameplay. When working on interactive elements, like character movements or responses to player actions, it is critical to execute code in this manner, as it ensures smooth and responsive gameplay experiences.

While there are other methods like FixedUpdate and Awake, they serve different purposes. FixedUpdate is called at a fixed time interval, which is beneficial for physics-related calculations to ensure consistent interactions, and Awake is called when a script instance is being loaded, making it useful for initialization tasks that should rig before the game starts. Each has its specific use case, but for frame-specific updates, Update is the go-to method.