User interface design is the way information is displayed on a computer or mobile device so that you can interact with it. It includes things like the buttons or menus you use to find information, the colors used in the menus, the organization of the menus, and the way text is displayed. In other words, it’s the way you can look at something and understand how it works, like a map or a driving game. It helps you find things easily and have fun while doing it!