diff --git a/dungeonbattle/bootstrap.py b/dungeonbattle/bootstrap.py
index 0bc97be..7c65e0e 100644
--- a/dungeonbattle/bootstrap.py
+++ b/dungeonbattle/bootstrap.py
@@ -4,6 +4,11 @@ from dungeonbattle.term_manager import TermManager
 
 
 class Bootstrap:
+    """
+    The bootstrap object is used to bootstrap the game so that it starts properly.
+    (It was initially created to avoid circulary imports between the Game and
+    Display classes)
+    """
 
     @staticmethod
     def run_game():
diff --git a/dungeonbattle/enums.py b/dungeonbattle/enums.py
index 2a6b993..ed4e211 100644
--- a/dungeonbattle/enums.py
+++ b/dungeonbattle/enums.py
@@ -3,13 +3,22 @@ from typing import Optional
 
 from dungeonbattle.settings import Settings
 
+#This file contains a few useful enumeration classes used elsewhere in the code
+
 
 class DisplayActions(Enum):
+    """
+    Display actions options for the callable displayaction Game uses
+    (it just calls the same action on the display object displayaction refers to)
+    """
     REFRESH = auto()
     UPDATE = auto()
 
 
 class GameMode(Enum):
+    """
+    Game mode options
+    """
     MAINMENU = auto()
     PLAY = auto()
     SETTINGS = auto()
@@ -17,6 +26,9 @@ class GameMode(Enum):
 
 
 class KeyValues(Enum):
+    """
+    Key values options used in the game
+    """
     UP = auto()
     DOWN = auto()
     LEFT = auto()
diff --git a/dungeonbattle/game.py b/dungeonbattle/game.py
index e050e50..bbf4a8d 100644
--- a/dungeonbattle/game.py
+++ b/dungeonbattle/game.py
@@ -12,6 +12,9 @@ from typing import Callable
 
 
 class Game:
+    """
+    The game object controls all actions in the game.
+    """
     map: Map
     player: Player
     display_actions: Callable[[DisplayActions], None]
@@ -42,8 +45,8 @@ class Game:
     def run(self, screen: Any) -> None:
         """
         Main infinite loop.
-        We wait for a player action, then we do what that should be done
-        when the given key got pressed.
+        We wait for the player's action, then we do what that should be done
+        when the given key gets pressed.
         """
         while True:  # pragma no cover
             screen.clear()
@@ -69,7 +72,7 @@ class Game:
 
     def handle_key_pressed_play(self, key: KeyValues) -> None:
         """
-        In play mode, arrows or zqsd should move the main character.
+        In play mode, arrows or zqsd move the main character.
         """
         if key == KeyValues.UP:
             if self.player.move_up():
@@ -107,15 +110,16 @@ class Game:
             elif option == menus.MainMenuValues.EXIT:
                 sys.exit(0)
 
-    def game_to_str(self) -> str:
-        d = dict()
-        d["Map"] = game.map
-        d["Player"] = game.player
-
     def save_state(self) -> dict():
+        """
+        Saves the game to a dictionnary
+        """
         return self.map.save_state()
 
     def load_state(self, d: dict) -> None:
+        """
+        Loads the game from a dictionnary
+        """
         self.map.load_state(d)
     
     def load_game(self) -> None:
@@ -128,7 +132,7 @@ class Game:
 
     def save_game(self) -> None:
         """
-        Save the game to a file
+        Saves the game to a file
         """
         with open("save.json", "w") as f:
             f.write(json.dumps(self.save_state()))
diff --git a/dungeonbattle/interfaces.py b/dungeonbattle/interfaces.py
index 7a8ae8b..d234578 100644
--- a/dungeonbattle/interfaces.py
+++ b/dungeonbattle/interfaces.py
@@ -10,7 +10,7 @@ from dungeonbattle.display.texturepack import TexturePack
 class Map:
     """
     Object that represents a Map with its width, height
-    and the whole tiles, with their custom properties.
+    and tiles, that have their custom properties.
     """
     width: int
     height: int
@@ -120,6 +120,9 @@ class Map:
             entity.act(self)
 
     def save_state(self) -> dict:
+        """
+        Saves the map's attributes to a dictionnary
+        """
         d = dict()
         d["width"] = self.width
         d["height"] = self.height
@@ -133,6 +136,9 @@ class Map:
         return d
 
     def load_state(self, d: dict) -> None:
+        """
+        Loads the map's attributes from a dictionnary
+        """
         self.width = d["width"]
         self.height = d["height"]
         self.start_y = d["start_y"] 
@@ -143,6 +149,9 @@ class Map:
         #add entities
 
 class Tile(Enum):
+    """
+    The internal representation of the tiles of the map
+    """
     EMPTY = auto()
     WALL = auto()
     FLOOR = auto()
@@ -158,9 +167,15 @@ class Tile(Enum):
         raise ValueError(ch)
 
     def char(self, pack: TexturePack) -> str:
+        """
+        Translates a Tile to the corresponding character according to the texture pack
+        """
         return getattr(pack, self.name)
 
     def is_wall(self) -> bool:
+        """
+        Is this Tile a wall?
+        """
         return self == Tile.WALL
 
     def can_walk(self) -> bool:
@@ -171,10 +186,13 @@ class Tile(Enum):
 
 
 class Entity:
+    """
+    An Entity object represents any entity present on the map
+    """
     y: int
     x: int
     name: str
-    map: Map
+    map: Map 
 
     def __init__(self):
         self.y = 0
@@ -182,29 +200,47 @@ class Entity:
 
     def check_move(self, y: int, x: int, move_if_possible: bool = False)\
             -> bool:
+        """
+        Checks if moving to (y,x) is authorized
+        """
         free = self.map.is_free(y, x)
         if free and move_if_possible:
             self.move(y, x)
         return free
 
     def move(self, y: int, x: int) -> bool:
+        """
+        Moves an entity to (y,x) coordinates
+        """
         self.y = y
         self.x = x
         return True
 
     def move_up(self, force: bool = False) -> bool:
+        """
+        Moves the entity up one tile, if possible
+        """
         return self.move(self.y - 1, self.x) if force else \
             self.check_move(self.y - 1, self.x, True)
 
     def move_down(self, force: bool = False) -> bool:
+        """
+        Moves the entity down one tile, if possible
+        """
         return self.move(self.y + 1, self.x) if force else \
             self.check_move(self.y + 1, self.x, True)
 
     def move_left(self, force: bool = False) -> bool:
+        """
+        Moves the entity left one tile, if possible
+        """
         return self.move(self.y, self.x - 1) if force else \
             self.check_move(self.y, self.x - 1, True)
 
     def move_right(self, force: bool = False) -> bool:
+        """
+        Moves the entity right one tile, if possible
+        """
         return self.move(self.y, self.x + 1) if force else \
             self.check_move(self.y, self.x + 1, True)
 
@@ -229,14 +265,23 @@ class Entity:
         return sqrt(self.distance_squared(other))
 
     def is_fighting_entity(self) -> bool:
+        """
+        Is this entity a fighting entity?
+        """
         return isinstance(self, FightingEntity)
 
     def is_item(self) -> bool:
+        """
+        Is this entity an item?
+        """
         from dungeonbattle.entities.items import Item
         return isinstance(self, Item)
 
     @staticmethod
     def get_all_entity_classes():
+        """
+        Returns all entities subclasses
+        """
         from dungeonbattle.entities.items import Heart, Bomb
         from dungeonbattle.entities.monsters import Beaver, Hedgehog, \
             Rabbit, TeddyBear
@@ -260,6 +305,10 @@ class Entity:
 
 
 class FightingEntity(Entity):
+    """
+    A FightingEntity is an entity that can fight, and thus has a health,
+    level and stats
+    """
     maxhealth: int
     health: int
     strength: int
@@ -285,27 +334,45 @@ class FightingEntity(Entity):
         
 
     def hit(self, opponent: "FightingEntity") -> None:
+        """
+        Deals damage to the opponent, based on the stats
+        """
         opponent.take_damage(self, self.strength)
 
     def take_damage(self, attacker: "Entity", amount: int) -> None:
+        """
+        Take damage from the attacker, based on the stats
+        """
         self.health -= amount
         if self.health <= 0:
             self.die()
 
     def die(self) -> None:
+        """
+        If a fighting entity has no more health, it dies and is removed
+        """
         self.dead = True
         self.map.remove_entity(self)
 
     def keys(self) -> list:
+        """
+        Returns a fighting entities specific attributes
+        """
         return ["maxhealth", "health", "level", "dead", "strength", "intelligence", "charisma", "dexterity", "constitution"]
 
     def save_state(self) -> dict:
+        """
+        Saves the state of the entity into a dictionnary
+        """
         d = super().save_state()
         for name in self.keys():
             d[name] = self.__getattribute__(name)
         return d
 
     def recover_state(self, d : dict) -> None:
+        """
+        Loads the state of an entity from a dictionnary
+        """
         super().recover_state(d)
         for name in d.keys():
             self.__setattribute__(name, d[name])
diff --git a/dungeonbattle/menus.py b/dungeonbattle/menus.py
index e543731..59b364f 100644
--- a/dungeonbattle/menus.py
+++ b/dungeonbattle/menus.py
@@ -8,22 +8,37 @@ from .settings import Settings
 
 
 class Menu:
+    """
+    A Menu object is the logical representation of a menu in the game
+    """
     values: list
 
     def __init__(self):
         self.position = 0
 
     def go_up(self) -> None:
+        """
+        Moves the pointer of the menu on the previous value
+        """
         self.position = max(0, self.position - 1)
 
     def go_down(self) -> None:
+        """
+        Moves the pointer of the menu on the next value
+        """
         self.position = min(len(self.values) - 1, self.position + 1)
 
     def validate(self) -> Any:
+        """
+        Selects the value that is pointed by the menu pointer
+        """
         return self.values[self.position]
 
 
 class MainMenuValues(Enum):
+    """
+    Values of the main menu
+    """
     START = 'Jouer'
     SAVE = 'Sauvegarder'
     LOAD = 'Charger'
@@ -35,13 +50,22 @@ class MainMenuValues(Enum):
 
 
 class MainMenu(Menu):
+    """
+    A special instance of a menu : the main menu
+    """
     values = [e for e in MainMenuValues]
 
 
 class SettingsMenu(Menu):
+    """
+    A special instance of a menu : the settings menu
+    """
     waiting_for_key: bool = False
 
     def update_values(self, settings: Settings) -> None:
+        """
+        The settings can change, so they are updated
+        """
         self.values = []
         for i, key in enumerate(settings.settings_keys):
             s = settings.get_comment(key)
@@ -61,7 +85,7 @@ class SettingsMenu(Menu):
     def handle_key_pressed(self, key: Optional[KeyValues], raw_key: str,
                            game: Any) -> None:
         """
-        Update settings
+        In the setting menu, we van select a setting and change it
         """
         if not self.waiting_for_key:
             # Navigate normally through the menu.