diff --git a/lobby.py b/lobby.py
new file mode 100644
index 0000000..982e3b0
--- /dev/null
+++ b/lobby.py
@@ -0,0 +1,160 @@
+import tkinter as tk
+import color
+import main as quadraLudi
+import importlib
+
+class Lobby:
+    def __init__(self):
+        # Win
+        win = tk.Tk()
+        win.title('QuadraLudi - Lobby')
+        win.geometry('800x640')
+        win['bg'] = color.LEVEL_1
+        # win.resizable(False, False)
+        self.win = win
+
+        # Frame
+        self.frame = None
+
+        # Variables
+        self.pseudo = tk.StringVar(win, "")
+        self.message = tk.StringVar(win, "")
+
+        # First
+        self.nameDisplay()
+
+    def resetFrame(self):
+        if self.frame != None:
+            self.frame.destroy()
+
+        frame = tk.Frame(self.win, bg = color.LEVEL_1)
+        frame.pack(fill = tk.BOTH, expand = True, padx = 5, pady = 5)
+        self.frame = frame
+
+    def nameDisplay(self):
+        self.resetFrame()
+
+        # Place
+        pseudoFrame = tk.LabelFrame(self.frame, text = 'Pseudo', bg = color.LEVEL_1, fg = color.PURPLE)
+        pseudoFrame.place(relx = 0.5, rely = 0.5, width = 200, height = 50, anchor = 'center')
+
+        entry = tk.Entry(pseudoFrame, textvariable = self.pseudo, bg = color.LEVEL_2, fg = color.GHOST)
+        entry.bind('<Return>', lambda e: self.nameConfirm())
+        entry.pack(side = tk.LEFT, expand = True)
+        entry.focus()
+        tk.Button(
+            pseudoFrame, text = 'Valider', bg = color.PURPLE, fg = color.LEVEL_1,
+            command = lambda: self.nameConfirm()
+        ).pack(side = tk.LEFT, expand = True)
+
+    def lobbyDisplay(self):
+        self.resetFrame()
+
+        # Configure layout
+        mainFrame = self.frame
+        mainFrame.columnconfigure(0, weight = 1)
+        mainFrame.columnconfigure(1, weight = 4)
+        mainFrame.rowconfigure(0, weight = 1)
+
+        # Score
+        scoreFrame = tk.LabelFrame(mainFrame, text = 'Score', bg = color.LEVEL_1, fg = color.PURPLE, font = (None, 12))
+        scoreFrame.grid(column = 0, row = 0, sticky = 'NSEW', padx = 5)
+        self.scoreFrame = scoreFrame
+        self.addScoreEntry(1, 'Eveldee', 2354)
+        self.addScoreEntry(2, 'Fetyrix', 42)
+
+        # Chat
+        chatFrame = tk.LabelFrame(mainFrame, text = 'Chat', bg = color.LEVEL_1, fg = color.PURPLE, font = (None, 12))
+        chatFrame.grid(column = 1, row = 0, sticky = 'NSEW', padx = 5)
+        self.chatFrame = chatFrame
+        self.addChatEntry('16:45', 'Eveldee', 'Hello')
+        self.addChatEntry('16:46', 'Fetyrix', 'Je suis un très long text text text text text text text text text text text text text text text text')
+
+        bottomFrame = tk.Frame(chatFrame, bg = color.LEVEL_5)
+        bottomFrame.pack(side = tk.BOTTOM, fill = tk.X)
+        entry = tk.Entry(bottomFrame, textvariable = self.message, bg = color.LEVEL_1, fg = color.GHOST, font = (None, 11))
+        entry.bind('<Return>', lambda e: self.sendMessage())
+        entry.pack(side = tk.LEFT, fill = tk.BOTH, expand = True, padx = 5, pady = 5)
+        entry.focus()
+        self.chatEntry = entry
+        tk.Button(
+            bottomFrame, text = 'Envoyer', bg = color.PURPLE, fg = color.LEVEL_1,
+            command = lambda: self.sendMessage()
+        ).pack(side = tk.LEFT, padx = 5, pady = 5)
+
+        # Play
+        tk.Button(
+            mainFrame, text = 'Jouer', bg = color.PURPLE, fg = color.LEVEL_1,
+            command = lambda: self.play()
+        ).grid(column = 0, row = 1, columnspan = 2, sticky = 'NSEW', padx = 5, pady = 5)
+
+    def nameConfirm(self):
+        pseudo = self.pseudo.get()
+
+        if pseudo == '':
+            return
+
+        self.lobbyDisplay()
+
+    def sendMessage(self):
+        # Check empty
+        message = self.message.get()
+        if message == '':
+            return
+
+        # Send
+
+
+        # Clear
+        self.message.set('')
+
+    def sendScore(self, score):
+        pass
+
+    def play(self):
+        # Reload
+        importlib.reload(quadraLudi)
+
+        # Minimize
+        self.win.iconify()
+
+        # Display
+        quadraLudi.main(self.win, lambda score: self.playEnd(score))
+
+    def playEnd(self, score):
+        # Display window, focus
+        self.win.deiconify()
+        self.win.focus_force()
+        self.chatEntry.focus()
+
+        # Send score
+        self.sendScore(score)
+
+    def addScoreEntry(self, rank, pseudo, score):
+        frame = tk.Frame(self.scoreFrame)
+        frame.pack(anchor = tk.W)
+        font = (None, 11)
+        tk.Label(frame, text = f'{rank}', bg = color.LEVEL_1, fg = color.PURPLE, font = font).pack(side = tk.LEFT)
+        tk.Label(frame, text = f'>', bg = color.LEVEL_1, fg = color.BLUE, font = font).pack(side = tk.LEFT)
+        tk.Label(frame, text = f'{pseudo}', bg = color.LEVEL_1, fg = color.GREEN, font = font).pack(side = tk.LEFT)
+        tk.Label(frame, text = f':', bg = color.LEVEL_1, fg = color.YELLOW, font = font).pack(side = tk.LEFT)
+        tk.Label(frame, text = f'{score}', bg = color.LEVEL_1, fg = color.PINK, font = font).pack(side = tk.LEFT)
+
+    def addChatEntry(self, time, pseudo, message):
+        frame = tk.Frame(self.chatFrame, bg = color.LEVEL_1)
+        frame.pack(anchor = tk.W)
+        font = (None, 10)
+        tk.Label(frame, text = f'[{time}]', bg = color.LEVEL_1, fg = color.PURPLE, font = font).pack(side = tk.LEFT)
+        tk.Label(frame, text = f'({pseudo})', bg = color.LEVEL_1, fg = color.GREEN, font = font).pack(side = tk.LEFT)
+        tk.Label(frame, text = f':', bg = color.LEVEL_1, fg = color.YELLOW, font = font).pack(side = tk.LEFT)
+        tk.Label(frame, text = f'{message}', bg = color.LEVEL_1, fg = color.PINK, font = font, wraplength = 450, justify = tk.LEFT).pack(side = tk.LEFT)
+
+    def show(self):
+        self.win.mainloop()
+
+def main():
+    lobby = Lobby()
+    lobby.show()
+
+if __name__ == "__main__":
+    main()
\ No newline at end of file
diff --git a/main.py b/main.py
index 4a5f995..7e81e5e 100644
--- a/main.py
+++ b/main.py
@@ -7,20 +7,17 @@ from PIL import Image, ImageTk
 from time import sleep
 from tkinter import messagebox
 
-win = tk.Tk()
-win['bg'] = color.LEVEL_9
-win.title('Quadraludi')
-win.geometry('806x606')
-win.resizable(False, False)
+# Var
+win = None
 
 # Res
-image_center = ImageTk.PhotoImage(Image.open('res/logo/main.png'))
+image_center = None
 
 # Time
 time = None
 delta = None
 tick = 0
-score = tk.IntVar(win, 0)
+score = None
 
 # Difficulty
 difficulty = 1.0
@@ -29,6 +26,28 @@ DIFFICULTY_STEP = (MAX_DIFFICULTY - difficulty) / 5000
 
 # End
 _end = False
+lobbyEnd = None
+
+def ini(master):
+    global win, image_center, score
+
+    # if run from lobby
+    if (master != None):
+        win = tk.Toplevel(master)
+    else:
+        win = tk.Tk()
+
+    win['bg'] = color.LEVEL_9
+    win.title('Quadraludi')
+    win.geometry('806x606')
+    win.resizable(False, False)
+    win.focus_force()
+
+    # Res
+    image_center = ImageTk.PhotoImage(Image.open('res/logo/main.png'))
+
+    # Time
+    score = tk.IntVar(win, 0)
 
 def loop(deltaTime):
     global time, delta, tick, score, difficulty
@@ -42,11 +61,14 @@ def loop(deltaTime):
     deltatime = (delta - time).microseconds * 1e-6
 
     # Loop
-    if tick > 2:
-        fall.loop(deltatime, difficulty, end)
-        osu.loop(deltatime, difficulty, end)
-        pong.loop(deltatime, difficulty, end)
-        space.loop(deltatime, difficulty, end)
+    try:
+        if tick > 2:
+            fall.loop(deltatime, difficulty, end)
+            osu.loop(deltatime, difficulty, end)
+            pong.loop(deltatime, difficulty, end)
+            space.loop(deltatime, difficulty, end)
+    except:
+        return
 
     # Step tick
     tick += 1
@@ -62,8 +84,12 @@ def loop(deltaTime):
     time = delta
     win.after(int(1000 / 60), lambda: loop(deltaTime))
 
-def main():
-    global time, delta
+def main(master = None, end = None):
+    global time, delta, lobbyEnd
+
+    # Ini
+    lobbyEnd = end
+    ini(master)
 
     # Create Canvas
     canvas_pong = tk.Canvas(win, width = 400, height = 300, bd = 0, highlightthickness = 0, relief = 'ridge', bg = color.LEVEL_1)
@@ -82,7 +108,7 @@ def main():
         logo = tk.PhotoImage('res/logo/icon.png')
         win.tk.call('wm', 'iconphoto', win._w, logo)
 
-    tk.Label(win, image = image_center, bg = color.LEVEL_1).place(x = 401 - 32, y = 301 - 32)
+    # tk.Label(win, image = image_center, bg = color.LEVEL_1).place(x = 401 - 32, y = 301 - 32)
 
     # Score
     tk.Label(win, textvariable = score, bg = color.LEVEL_1, fg = color.BROWN, font = (None, 12)).place(x = 2, y = 2)
@@ -124,7 +150,11 @@ def end():
 
     # Terminate
     win.destroy()
-    sys.exit(0)
+
+    if type(win) == tk.Tk:
+        sys.exit(0)
+    else:
+        lobbyEnd(score.get())
 
 # Main
 if __name__ == "__main__":