This chapter discusses designing of a simple match-3 type of game, where players have to match rows or columns of gems in a well-known game mechanic that has been a staple of casual gaming. Matching sequences of items is a simple concept that, nonetheless, allows to understand how grid-based games can be implemented while also exploring additional Unity features like layers and raycasts. The chapter describes how to implement a game manager to handle different scenes defining the overall game structure and explains setting up a Splash screen with a custom logo and text. It shows how to adding the button component to a text object and set up different colors to identify its highlighted and pressed states. The chapter also describes the Main Menu scene for a Jem Matcher game, showing text-based buttons for moving to an option screen.