diff --git a/gametest.py b/gametest.py
index bc07c47..82af61c 100644
--- a/gametest.py
+++ b/gametest.py
@@ -4,11 +4,17 @@
 import pygame, signal, sys, time, os, RPi.GPIO as GPIO
 from pygame.locals import *
 
-#GPIO
+#GPIO for Buttons
 startPin = 32
 errorPin = 31
 shutdownPin = 3
 
+#GPIO for LED
+pin_red = 22
+pin_green = 18
+pin_blue = 16
+
+#initialise gpio
 GPIO.setmode(GPIO.BOARD)
 GPIO.setup(startPin, GPIO.IN)
 GPIO.setup(errorPin, GPIO.IN)
@@ -19,6 +25,7 @@ timePerError = 5 # every time the wire is touched, some time is added as penalty
 screenSizeX = 1920
 screenSizeY = 1080
 
+#initialise the game
 pygame.init()
 
 #colors
@@ -34,12 +41,15 @@ font1 = pygame.font.Font('freesansbold.ttf', 90)
 font2 = pygame.font.Font('freesansbold.ttf', 65)
 font3 = pygame.font.Font('freesansbold.ttf', 45)
 
-# preset highscores
+#predefinition of led variables, for later global use
+red = ""
+green = ""
+blue = ""
 
+# preset highscores
 hs1_name = "Fritz"
 hs2_name = "Bernd"
 hs3_name = "Max"
-
 hs1_time = 100
 hs2_time = 200
 hs3_time = 300
@@ -49,9 +59,94 @@ MAX_NAME_LENGTH = 10
 
 
 def signal_handler(sig, frame):
+        # signal handler, later called to interpret
+        # ctrl+c as "quit" rather than "abort"
         print('Programm exiting')
         exit_application()
 
+def led_init():
+        # initialises the LED pins
+        # mind that the pins for the LEDs are pullup by default,
+        # which is on purpose, since this causes the LED strip to 
+        # be turned off when the program isnt running or their state
+        # is undefined
+
+        # set the led pins to be outputs
+        # careful: these pins dont drive the 
+        # led strip themselves, but rather 3 
+        # n-channel mosfets, type IRLZ34N
+        global red,green,blue
+        GPIO.setup(pin_red, GPIO.OUT)
+        GPIO.setup(pin_green, GPIO.OUT)
+        GPIO.setup(pin_blue, GPIO.OUT)
+        
+        # set the pwm frequency to 100
+        # if you experience strobing, try changing
+        # the number
+        red = GPIO.PWM(pin_red, 100)        
+        blue = GPIO.PWM(pin_blue, 100)
+        green = GPIO.PWM(pin_green, 100)
+
+        # start pwm generation with a duty cycle of 0
+        green.start(0)
+        blue.start(0)
+        red.start(0)
+
+def change_green(amount):
+        # takes an input from 0 to 255 and converts it to Duty Cycle
+        # to be used by change_led_colour
+        global green
+        factor = 100/255
+        green.ChangeDutyCycle(amount*factor)
+
+def change_blue(amount):
+        # takes an input from 0 to 255 and converts it to Duty Cycle
+        # to be used by change_led_colour
+        global blue
+        factor = 100/255
+        blue.ChangeDutyCycle(amount*factor)
+    
+def change_red(amount):
+        # takes an input from 0 to 255 and converts it to Duty Cycle
+        # to be used by change_led_colour
+        global red
+        factor = 100/255
+        red.ChangeDutyCycle(amount*factor)
+
+def change_led_colour(red_amount,green_amount,blue_amount):
+        # sets an RGB value for the led strip.
+        global red,green,blue
+        if red_amount < 0 or red_amount > 255 or green_amount < 0 or green_amount > 255 or blue_amount < 0 or blue_amount > 255:
+            led_alert()
+            return false
+        red.ChangeDutyCycle(red_amount)
+        blue.ChangeDutyCycle(blue_amount)
+        green.ChangeDutyCycle(green_amount)
+
+def change_led_speed(colour, speed):
+        #changes the speed of the LED pwm
+        global red,green,blue
+
+        if colour == "red":
+            red.ChangeDutyCycle(speed)
+        elif colour == "green":
+            green.ChangeDutyCycle(speed)
+        elif colour == "blue":
+            blue.ChangeDutyCycle(speed)
+        else:
+            return false
+
+def led_alert():
+        # stops the running program for 10 seconds
+        # causes the red LED to flash
+        # use as error message
+        change_led_colour(100, 0, 0)
+        change_led_speed(red, 1)
+        for i in range(1,10):
+            time.sleep(1)
+        change_led_colour(100, 100, 100)
+        change_led_speed(red, 100)
+
 def toggle_fullscreen():
         screen = pygame.display.get_surface()
         tmp = screen.convert()
@@ -186,17 +281,21 @@ def checkHighscores(time):
 #signal handing for controlled exit via ctrl+c
 signal.signal(signal.SIGINT, signal_handler)
 
-pygame.mouse.set_visible(False) # hide mouse
+#hide mouse
+pygame.mouse.set_visible(False)
 
 screen = pygame.display.set_mode((screenSizeX, screenSizeY), pygame.FULLSCREEN)
 #pygame.display.set_caption('Heisser Draht') # not required for fullscreen application
 
 #screen = toggle_fullscreen()
 
+#initialise led strip
+led_init()
 
 while True: # main loop
 #global label storage
         print("New game starting")
+        change_led_colour(10,100,10)
         time_surface = 0
         errors_surface = 0
         time_rectangle = 0
@@ -242,8 +341,12 @@ while True: # main loop
 
         start_time = int(time.time())
 
+        change_led_colour(10,10,100)
+
+
         while True: # game running
                 print("Game running normally")
+
                 handle_events()
 
                 if GPIO.input(errorPin) == True:
@@ -276,6 +379,8 @@ while True: # main loop
                 #if GPIO.input(startPin) == True and justStarted == False:
                 if GPIO.input(startPin) != True:
 
+                        change_led_colour(100,10,10)
+                        
                         print("Game ended because start pin wasnt true")
 
                         checkHighscores(int_time)