StarterGui

StarterGui is a service in Roblox's engine that provides a way to manage and display user interface elements within a player's game session. When a player joins a Roblox experience, a copy of the contents of StarterGui is automatically placed into the player's PlayerGui. PlayerGui is a specific instance within the Player object that holds all the GUI elements a player can see and interact with.

The primary purpose of StarterGui is to serve as a template for the user interface. Developers place ScreenGui objects, which are containers for UI elements like TextLabels, ImageLabels, TextButtons, and Frames, inside StarterGui. When a new player joins, these ScreenGuis are replicated to their individual PlayerGui, ensuring that each player receives the same initial UI setup.

This service is crucial for creating interactive experiences. Developers can use scripts attached to UI elements within StarterGui to handle player input, display information, and control game logic. For instance, a button placed in StarterGui could be scripted to open a menu, trigger an event, or purchase an item in the game. The automatic replication to each player's PlayerGui simplifies the process of providing a consistent user interface across all participants in an experience. Any modifications made to GUI elements within PlayerGui during gameplay do not affect StarterGui itself.