In Chapter 2, Creating GUIs, we've seen how we can use Unity's powerful UI system to create something to complement a game title, but it's also possible for people to create entire games using only the UI interface.
Over the course of this chapter, we will be creating a clicker game named Code Clicker. Code Clicker will be similar in some respects to the popular clicker title Cookie Clicker created by Orteil (playable at http://orteil.dashnet.org/cookieclicker/) except instead of clicking cookies, we will be clicking a button to write code. We'll also get exposure to how to create more complex menus, such as those with a scrollbar.