Boss Fighting Simulator Gui -

Includes icons for the Weapons Menu , Pet Shop , and Skins/Purchases .

In the context of Roblox scripting or "exploits," a GUI refers to a custom window injected into the game to automate tasks. These typically offer: Boss Fighting Simulator GUI

“The GUI is the main game HUD... it displays all the information you need in BFS.” Includes icons for the Weapons Menu , Pet

If you are playing the game, the GUI (Graphical User Interface) is the collection of menus and buttons that help you track your progress. Includes icons for the Weapons Menu

Displays your current HP , EN (Energy) , and XP levels.

Automatically swings weapons or attacks bosses to gain power without manual clicking.