Observables use an event based approach to development using UnityEvents. They allow the developer to set up their game in-editor in a decoupled manner. Any serializable object in Unity can utilize this functionality with great power. Take advantage of performance gains by ony accessing values when they are changed as opposed to every Update frame. Improve code quality by naturally being decoupled with the system. Using .Net 4, the power of unity serialization, and a set of classes, you are able to assign a UnityEvent to fire when an object's value has been changed. You can update a text component, save or load an observable, and virtually anything your mind requires of it.