add game scene

scenes/game.gd

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+extends Node
+
+@onready var back_button: Button = $BackButtonContainer/BackButton
+
+func _ready() -> void:
+	if not back_button.pressed.is_connected(_on_back_button_pressed):
+		back_button.pressed.connect(_on_back_button_pressed)
+
+func _on_back_button_pressed() -> void:
+	AudioManager.play_ui_click()
+	GameManager.save_game()
+	GameManager.exit_to_main_menu()

scenes/game.gd.uid

@@ -0,0 +1 @@
+uid://bvtr6yhlyuv4v

scenes/game.tscn

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+[gd_scene load_steps=2 format=3 uid="uid://dmwkyeq2l7u04"]
+
+[ext_resource type="Script" uid="uid://bvtr6yhlyuv4v" path="res://scenes/game.gd" id="1_uwrxv"]
+
+[node name="Game" type="Node"]
+script = ExtResource("1_uwrxv")
+
+[node name="BackButtonContainer" type="Control" parent="."]
+layout_mode = 3
+anchors_preset = 0
+offset_right = 40.0
+offset_bottom = 40.0
+
+[node name="BackButton" type="Button" parent="BackButtonContainer"]
+offset_right = 45.0
+offset_bottom = 31.0
+text = "back"