diff --git a/README.md b/README.md
index dfd74ff..8a9e259 100644
--- a/README.md
+++ b/README.md
@@ -8,10 +8,10 @@ Special thanks and dedication to LeMerluche, crushing its opponents on chess.com
 
 ## How to play with interface
 ```python
-from pyalapin.interface.interface import MyApp
+from pyalapin.interface import ChessApp
 
 if __name__ == '__main__':
-    MyApp(
+    ChessApp(
         play_with_ai=False # Set to True if you want to play agains AI
     ).run()
 
@@ -24,11 +24,9 @@ if __name__ == '__main__':
 <img align="right" src="docs/scholars_mate_command.gif">
 
 ```python
-import sys
-sys.path.append("python/")
-import python.engine as engine
+from pyalapin.engine import ChessGame
 
-game = engine.engine.Game(
+game = ChessGame(
     automatic_draw=True, # Set to True if you want
                          # to have each turn drawn in terminal
     ai=False, # set to True if you want to play agains AI
diff --git a/pyalapin/__init__.py b/pyalapin/__init__.py
index 33749f8..7f38ff0 100644
--- a/pyalapin/__init__.py
+++ b/pyalapin/__init__.py
@@ -1,6 +1,7 @@
 """
 pyalapin, chess python package.
 """
+# from .interface import interface as interface
 
 __version__ = "0.0.1"
 __author__ = "Vincent Auriau"
diff --git a/pyalapin/engine/__init__.py b/pyalapin/engine/__init__.py
index e69de29..d3001ab 100644
--- a/pyalapin/engine/__init__.py
+++ b/pyalapin/engine/__init__.py
@@ -0,0 +1 @@
+from .engine import ChessGame
\ No newline at end of file
diff --git a/pyalapin/engine/color.py b/pyalapin/engine/color.py
index 4b2c455..9d6570f 100644
--- a/pyalapin/engine/color.py
+++ b/pyalapin/engine/color.py
@@ -1,4 +1,4 @@
-class Color:
+class Color(object):
     GREEN = "\x1b[32m"
     WHITE = "\033[0m"
     RED = "\x1b[31m"
diff --git a/pyalapin/engine/engine.py b/pyalapin/engine/engine.py
index ffb626e..b17cdcd 100644
--- a/pyalapin/engine/engine.py
+++ b/pyalapin/engine/engine.py
@@ -14,13 +14,13 @@
 import pyalapin.engine.material as material
 
 
-class Color:
+class Color(object):
     GREEN = "\x1b[32m"
     WHITE = "\033[0m"
     RED = "\x1b[31m"
 
 
-class Cell:
+class Cell(object):
     """
     Cell class representing a base element of a board.
 
@@ -387,7 +387,7 @@ def is_threatened(
         return False
 
 
-class Board:
+class Board(object):
     """
     Board class representing the chess board.
 
@@ -937,7 +937,7 @@ def draw(self, printing=True):
         return whole_text
 
 
-class Game:
+class ChessGame(object):
     """
     Game class, used to play a chess game, interact with the board and move pieces.
 
diff --git a/pyalapin/engine/move.py b/pyalapin/engine/move.py
index 9815b9e..196636a 100644
--- a/pyalapin/engine/move.py
+++ b/pyalapin/engine/move.py
@@ -4,7 +4,7 @@
 import pyalapin.engine.material as material
 
 
-class Move:
+class Move(object):
     """Base class for material movement.
 
     Implements various checks and is able to operate a piece movement along additional actions such as taking an
diff --git a/pyalapin/interface/__init__.py b/pyalapin/interface/__init__.py
new file mode 100644
index 0000000..dd1cc2a
--- /dev/null
+++ b/pyalapin/interface/__init__.py
@@ -0,0 +1 @@
+from .interface import ChessApp, BoardInterface
\ No newline at end of file
diff --git a/pyalapin/interface/interface.py b/pyalapin/interface/interface.py
index 5971d02..a62adf0 100644
--- a/pyalapin/interface/interface.py
+++ b/pyalapin/interface/interface.py
@@ -1,6 +1,5 @@
 import numpy as np
 import os
-import time
 
 from kivy.app import App
 from kivy.uix.gridlayout import GridLayout
@@ -12,7 +11,7 @@
 
 from kivy.graphics import Rectangle, Color, Canvas
 
-from pyalapin.engine.engine import Game
+from pyalapin.engine.engine import ChessGame
 
 
 class LoginScreen(GridLayout):
@@ -56,7 +55,7 @@ def __init__(self, row, column, **kwargs):
         self.column = column
 
 
-class TableScreen(GridLayout):
+class BoardInterface(GridLayout):
     """
     Main class to represent and display the board, as well as to play a chess game.
 
@@ -64,7 +63,7 @@ class TableScreen(GridLayout):
     ----------
     path_to_illustrations: str
         Path to the images to use to display cells & pieces
-    game: engine.Game
+    game: engine.ChessGame
         game to actually represent
     ai_playing: bool
         whether or not an AI is playing (only one of the players for now)
@@ -89,7 +88,7 @@ def __init__(self, game, **kwargs):
         game: engine.Game to represent
 
         """
-        super(TableScreen, self).__init__(**kwargs)
+        super(BoardInterface, self).__init__(**kwargs)
         self.path_to_illustrations = "illustrations"
         self.game = game
 
@@ -378,7 +377,7 @@ def click_cell(self, event):
                 self.update()
 
 
-class MyApp(App):
+class ChessApp(App):
     """
     Main app to use to play game, by calling MyApp().buil() and then player.
     """
@@ -394,6 +393,6 @@ def build(self):
         """
         Builds the game and the display board along with it.
         """
-        game = Game(automatic_draw=False, ai=self.play_with_ai)
+        game = ChessGame(automatic_draw=False, ai=self.play_with_ai)
         print("game created")
-        return TableScreen(game)
+        return BoardInterface(game)
diff --git a/run_app.py b/run_app.py
index 391f364..a0901b2 100644
--- a/run_app.py
+++ b/run_app.py
@@ -1,4 +1,5 @@
-from pyalapin.interface.interface import MyApp
+from pyalapin.interface import ChessApp
+# import pyalapin.interface as interface
 
 if __name__ == "__main__":
-    MyApp(play_with_ai=False).run()
+    ChessApp(play_with_ai=False).run()