diff --git a/core/game_state/game_state.gd b/core/game_state/game_state.gd
index 9118df9..5fb9e27 100644
--- a/core/game_state/game_state.gd
+++ b/core/game_state/game_state.gd
@@ -22,6 +22,7 @@ signal on_photo_taken_finished
 signal on_photo_mode_black_screen_disappeared
 
 const SAVE_PATH: String = "user://savegame.json"
+const SAVE_PASSWORD: String = "jmpgames_megapwd"
 
 var save_data: SaveGameData = SaveGameData.new()
 var is_loaded: bool = false
@@ -77,29 +78,55 @@ func apply_train_colors() -> void:
 		)
 		DisplayServer.window_set_position(screen_center - window_half_size)
 
-
-func save_game() -> void:
-	var save_file = FileAccess.open(SAVE_PATH, FileAccess.WRITE)
-	var json_string = JSON.stringify(save_data.to_dictionary())
-	save_file.store_line(json_string)
-
+#encrypted file + binary serialization (standard)
 func load_game() -> void:
 	if not FileAccess.file_exists(SAVE_PATH):
 		save_data = SaveGameData.new()
 		is_loaded = true
 		return
-		
-	var file = FileAccess.open(SAVE_PATH, FileAccess.READ)
-	var json_string = file.get_as_text()
-	
-	var json = JSON.new()
-	var parse_result = json.parse(json_string)
-	
+
+	var file := FileAccess.open_encrypted_with_pass(SAVE_PATH, FileAccess.READ, SAVE_PASSWORD)
 	save_data = SaveGameData.new()
-	if parse_result == OK and json.data is Dictionary:
-		save_data = SaveGameData.from_dictionary(json.data)
-	
+	if file != null:
+		var data = file.get_var()
+		file.close()
+		if data is Dictionary:
+			save_data = SaveGameData.from_dictionary(data)
+	#if file == null the key or the file is corrupted -> start with new data
 	is_loaded = true
+	
+	
+func save_game() -> void:
+	var file := FileAccess.open_encrypted_with_pass(SAVE_PATH, FileAccess.WRITE, SAVE_PASSWORD)
+	if file == null:
+		push_error("Salvataggio fallito: %s" % FileAccess.get_open_error())
+		return
+	file.store_var(save_data.to_dictionary())  # binario, non JSON
+	file.close()
+
+#JSon Version
+#func save_game() -> void:
+	#var save_file = FileAccess.open(SAVE_PATH, FileAccess.WRITE)
+	#var json_string = JSON.stringify(save_data.to_dictionary())
+	#save_file.store_line(json_string)
+#
+#func load_game() -> void:
+	#if not FileAccess.file_exists(SAVE_PATH):
+		#save_data = SaveGameData.new()
+		#is_loaded = true
+		#return
+		#
+	#var file = FileAccess.open(SAVE_PATH, FileAccess.READ)
+	#var json_string = file.get_as_text()
+	#
+	#var json = JSON.new()
+	#var parse_result = json.parse(json_string)
+	#
+	#save_data = SaveGameData.new()
+	#if parse_result == OK and json.data is Dictionary:
+		#save_data = SaveGameData.from_dictionary(json.data)
+	#
+	#is_loaded = true
 
 func pause_game() -> void:
 	get_tree().paused = true
diff --git a/core/scene_manager/scene_manager.gd b/core/scene_manager/scene_manager.gd
index b48a70d..86ff43c 100644
--- a/core/scene_manager/scene_manager.gd
+++ b/core/scene_manager/scene_manager.gd
@@ -48,8 +48,8 @@ func _build_material() -> void:
 	mat.set_shader_parameter("shape_tiling", 16.0)
 	mat.set_shader_parameter("shape_rotation", 0.0)
 	mat.set_shader_parameter("shape_scroll", Vector2.ZERO)
-	mat.set_shader_parameter("shape_feathering", 0.0)
-	mat.set_shader_parameter("shape_treshold", 1.15)  # >1 = full at the end of the transation
+	mat.set_shader_parameter("shape_feathering", 0.05)
+	mat.set_shader_parameter("shape_treshold", 1.0)  # >=1 -> full at the end of the transation
 	mat.set_shader_parameter("width", 0.5)
 
 	color_rect.material = mat
@@ -80,9 +80,15 @@ func change_scene(scene_enum: SceneConfig.SceneName) -> void:
 	var target_scene: PackedScene = config.scenes[scene_enum]
 
 	color_rect.mouse_filter = Control.MOUSE_FILTER_STOP
-
+	loading_screen.visible = true
+	
 	await cover(transition_duration)
 	get_tree().change_scene_to_packed(target_scene)
 	await reveal(transition_duration)
 
+	loading_screen.visible = false
 	color_rect.mouse_filter = Control.MOUSE_FILTER_IGNORE
+
+func quit_game() -> void:
+	get_tree().quit()
+