Toggling the option to 'On' does not completely remove the GUI. It is still present, but is invisible. The GUI can still be interacted with if used correctly.
- Go into the Pause menu.
- Select Settings.
- Select video settings.
- Tap Hide GUI.
- This option is useful for when the Player would like gameplay-central images or videos as it hides the Inventory and Health/Armor bars which can be potentially distracting.
- If the Player hides the GUI, other Players' nametags will also be invisible.