Fluent API
Entity handles provide chainable methods that abstract away the process of imperatively manipulating entities.
Features
Section titled “Features”Advanced Queries
Query entities whose component just changed, filter it, map it to something useful, you name it.
Plugins
Organize your components and systems by grouping them together in a plugin, which in turn also allows for third-party plugins that are easy to integrate.
Everything is an Entity
Components, resources, systems and plugins are also entities, allowing you to assign them metadata and inspect them.