Common UI provides a toolbox for creating rich, multi-layered user interfaces with cross-platform support, such as those found in Fortnite. Its tools include:

A new library of Common UI Widgets that provide commonly used game functionality.
New style data assets that separate styling information from UI elements, making it easier to share styling among multiple UIs.
A new Input Routing system that can give UI widgets selective interactivity, making it easier to manage focus in multi-layered UIs.
Support for console-specific UI elements, such as button icons for a specific controller.
Cardinal navigation management for gamepads.

Refer to the pages below for more information about Common UI's intended use cases and how to get started using these tools.