diff --git a/Bop_it_sensors.py b/Bop_it_sensors.py
index 6f6499c..f12d4de 100644
--- a/Bop_it_sensors.py
+++ b/Bop_it_sensors.py
@@ -2,15 +2,86 @@ import random
 import time
 from gpiozero import Button
 from gpiozero import RotaryEncoder
+import json
 
 laser = Button(17) #Die Zahl entspricht dem Pin auf dem ARPI600 Board
 sound = Button(18, pull_up=True)
 rotate = RotaryEncoder(20, 21)
 tilt = Button(23)
+round_duration = 4
+highscore_file_path = "./Highscores.json" #das heisst, die Datei wird im selben Verzeichnis wie der Code gespeichert
+score_separator = " --- "
+highscore_length = 5
+
+def save_highscore(highscores):
+    with open(highscore_file_path, mode="w", encoding="utf-8") as write_file:
+        json.dump(highscores, write_file)
+
+def load_highscore():
+    try:
+        with open(highscore_file_path, mode="r" , encoding="utf-8") as read_file:
+            return json.load(read_file)
+    except Exception:
+        return []
+
+def show_menu():
+    print(" __________________________________________________")
+    print("|                                                  |")
+    print("|                        MENU                      |")
+    print("|__________________________________________________|")
+    print("")
+    print("1 - Play a round of Bop it!")
+    print("2 - Show Highscores")
+    print("3 - End game")
+    print("----------------------------------------------------")
+    print("Enter choice: ")
+    print("----------------------------------------------------")
+    return input()
+
+def show_highscores():
+    scores = load_highscore()
+    print("")
+    if len(scores) == 0:
+        print("Be the first to Bop it!")
+    else:
+        for index, element in enumerate(scores):
+            print(f"{index + 1}. {element}")
+    print("")
+
+def get_name_for_highscore(rank, score):
+    print("----------------------------------------------------")
+    print(f"Congratulations! You are the new number {rank}")
+    print("----------------------------------------------------")
+    print("Enter your name, champ: ")
+    new_name = input()
+    return new_name + score_separator + str(score)
+
+def check_if_highscore(score):
+    scores = load_highscore()
+    has_highscore = False
+    for index, entry in enumerate(scores):
+        name, entry_score = entry.split(score_separator)
+        if score > int(entry_score):
+            new_entry = get_name_for_highscore(index + 1, score)
+            scores.insert(index, new_entry)
+            if len(scores) > highscore_length:
+                loser = scores.pop().split(score_separator)[0]
+                print("----------------------------------------------------")
+                print(f"{loser} was kicked off the highscore list. Bye bye!")
+                print("----------------------------------------------------")
+            has_highscore = True
+            break
+    if not has_highscore and len(scores) < highscore_length:
+        scores.append(get_name_for_highscore(len(scores)+1, score))
+    save_highscore(scores)
+
+def decrease_round_duration():
+    global round_duration
+    round_duration = round_duration * 0.97
 
 def command_tilt():
     print("Tilt me!")
-    result = tilt.wait_for_press(timeout=10)
+    result = tilt.wait_for_press(timeout=round_duration)
     if result:
         time.sleep(0.3) # soll verhindern, dass die vorherige Runde die jetzige beeinflusst
         print(success_message())
@@ -22,7 +93,7 @@ def command_tilt():
 
 def command_blind():
     print('Blind me!')
-    result = laser.wait_for_press(timeout=10)
+    result = laser.wait_for_press(timeout=round_duration)
     if result:
         print(success_message())
         return 1
@@ -31,7 +102,7 @@ def command_blind():
 
 def command_scream():
     print('Make noise at me!')
-    result = sound.wait_for_press(timeout=10)
+    result = sound.wait_for_press(timeout=round_duration)
     if result:
         time.sleep(0.3) #soll verhindern, dass dasGeräuschsignal aus der vorherigen Runde gezählt wird
         print(success_message())
@@ -44,7 +115,7 @@ def command_spin():
     used_direction = random.choice(directions)
     print(f"Spin me... {used_direction}!")
     rotate.value = 0 # damit jede Runde wieder bei Null anfängt, Werte würden allgemein vom -1 bis 1 reichen
-    result = rotate.wait_for_rotate(timeout=10)
+    result = rotate.wait_for_rotate(timeout=round_duration)
     if result and rotate.value > 0 and used_direction == "clockwise" or result and rotate.value < 0 and used_direction == "counter-clockwise":
         print(success_message())
         return 1
@@ -58,23 +129,39 @@ def success_message():
     message = random.choice(list_of_messages)
     return message
 
-def main():
-    score = 0
+def play_game():
     result = 0
-    print("Raspberry will now tell you what to do.")
-    print("Every correct action will give you a point.")
-    print("How many can you get?")
-    print("Let's go!")
+    score = 0
     list_command_choices =[command_spin, command_tilt, command_blind, command_scream]
     while result != -1:
         score += result # war zuerst ein paar Zeilen weiter unten, hat dann aber nach einer falschen Runde den Score erhöht
         time.sleep(0.5)
+        print("----------------------------------------------------")
         print("Get ready for the next round!")
+        print(f"Your time is {round_duration} seconds.")
+        print("----------------------------------------------------")
         round = random.choice(list_command_choices)
         result = round()
+        decrease_round_duration()
+    print("----------------------------------------------------")
     print(f"Game over! Your Score is {score}")
+    print("----------------------------------------------------")
+    check_if_highscore(score)
 
-
+def main():
+    user_choice = None
+    print("=== WELCOME TO BOP IT! ===")
+    print("Raspberry will now tell you what to do.")
+    print("Every correct action will give you a point.")
+    print("How many can you get?")
+    print("Let's go!")
+    user_choice = show_menu()
+    while user_choice != "3":
+        if user_choice == "1":
+            play_game()
+        elif user_choice == "2":
+            show_highscores()
+        user_choice = show_menu()
 
 
 main()