diff --git a/NS.py b/NS.py
index 33a24c7..fef63ee 100644
--- a/NS.py
+++ b/NS.py
@@ -5,6 +5,8 @@ from math import pi
 from copy import copy
 from glob import iglob
 from os.path import basename
+from threading import Thread
+from serial import Serial
 
 from pygame import Surface, Color
 from pygame.event import clear
@@ -77,6 +79,13 @@ class NS(Game, Animation):
         self.dialogue = Dialogue(self)
         self.chemtrails = Chemtrails(self)
         self.boss = Boss(self)
+        self.get_configuration().type_declarations.add("bool", "input", "serial")
+        if self.serial_enabled():
+            self.serial_kill = False
+            self.serial_data = 0
+            self.serial_reader = Serial(self.get_configuration("input", "arduino-port"), timeout=.1)
+            self.serial_thread = Thread(target=self.read_serial)
+            self.serial_thread.start()
         self.last_press = get_ticks()
         self.register(self.blink_score, interval=500)
         self.play(self.blink_score)
@@ -89,6 +98,26 @@ class NS(Game, Animation):
         for path in iglob(self.get_resource("sfx/") + "*.wav"):
             sfx[basename(path.split(".")[0])] = SoundEffect(self, path)
 
+    def serial_enabled(self):
+        return self.get_configuration("input", "serial") and not self.check_command_line("-no-serial")
+
+    def read_serial(self):
+        while not self.serial_kill:
+            output = self.serial_reader.readline().strip()
+            if output:
+                self.serial_data = int(output, 2)
+            else:
+                self.serial_data = 0
+
+    def end(self, evt):
+        if evt.type == QUIT or self.delegate.compare(evt, "quit"):
+            self.serial_kill = True
+        Game.end(self, evt)
+            
+    def apply_serial(self):
+        for ii, light in enumerate(self.platform.lights):
+            light.pressed = bool(self.serial_data & (2 ** ii))
+
     def reset(self, leave_wipe_running=False):
         self.score_hidden = False
         self.idle_elapsed = 0
@@ -118,7 +147,7 @@ class NS(Game, Animation):
 
     def respond(self, event):
         if not self.suppressing_input and event.type in (KEYDOWN, KEYUP):
-            # if self.last_press <= get_ticks() - int(self.get_configuration("input", "buffer")):
+            if self.last_press <= get_ticks() - int(self.get_configuration("input", "buffer")):
                 pressed = True if event.type == KEYDOWN else False
                 lights = self.platform.lights
                 self.idle_elapsed = 0
@@ -139,6 +168,8 @@ class NS(Game, Animation):
 
     def update(self):
         Animation.update(self)
+        if self.serial_enabled():
+            self.apply_serial()
         self.title.update()
         self.introduction.update()
         self.ending.update()
@@ -1060,6 +1091,10 @@ class Boss(Animation):
         self.visitor_avatar = load(self.get_resource("Visitor_avatar.png")).convert()
         self.spoopy_avatar = load(self.get_resource("Spoopy_avatar.png")).convert()
         self.advance_prompt = AdvancePrompt(self)
+        self.backgrounds = [Sprite(self), Sprite(self), Sprite(self)]
+        self.backgrounds[0].load_from_path(self.get_resource("local/bg001.png"))
+        self.backgrounds[1].load_from_path(self.get_resource("local/bg002.png"))
+        self.backgrounds[2].load_from_path(self.get_resource("local/bg003.png"))
 
     def cancel_flash(self):
         if self.level_index == 0:
@@ -1375,7 +1410,8 @@ class Boss(Animation):
 
     def update(self):
         if self.active:
-            self.get_display_surface().fill((0, 0, 0))
+            self.backgrounds[self.level_index].update()
+            # self.get_display_surface().fill((0, 0, 0))
             dialogue = self.get_game().dialogue
             if dialogue.active:
                 if self.advance_prompt.check_first_press():
diff --git a/config b/config
index a2270a8..0f37cb4 100644
--- a/config
+++ b/config
@@ -24,4 +24,6 @@ up = K_u
 sfx-volume = .8
 
 [input]
-buffer = 200
+buffer = 0
+arduino-port = /dev/ttyACM0
+serial = yes
diff --git a/resource/scores b/resource/scores
index d3ede15..64c5761 100644
--- a/resource/scores
+++ b/resource/scores
@@ -13,3 +13,10 @@
 177012
 126061
 157603
+136643
+177268
+151171
+131298
+130375
+134183
+174976