Assets/Quit.gd

@@ -0,0 +1,14 @@
+extends Node
+
+class_name QuitGame
+
+@onready var button: Button = get_parent() as Button
+
+
+func _ready() -> void:
+	button.pressed.connect(_on_button_pressed)
+	button.name = button.text
+
+
+func _on_button_pressed() -> void:
+	get_tree().quit(0)

Assets/Quit.gd.uid

@@ -0,0 +1 @@
+uid://lh1hhx4q8nlu

main.tscn

@@ -62,3 +62,7 @@ text = "Recuration"
 script = ExtResource("1_ig7tw")
 level = ExtResource("5_lquwl")
 metadata/_custom_type_script = "uid://bel5yfuiqithe"
+
+[node name="Button5" type="Button" parent="VBoxContainer" unique_id=630288499]
+layout_mode = 2
+text = "Exit Experements"