diff --git a/snake/snake.py b/snake/snake.py
index 40bbdcc..0842714 100755
--- a/snake/snake.py
+++ b/snake/snake.py
@@ -3,8 +3,12 @@ import sys, pygame, random
 
 
 class Snake:
+    """
+    Programmable Game of Snake written in PyGame
+    """
 
-    def __init__(self, margin=80,length=10,grid_width=40,grid_height=40, grid_pts=20,fps=10):
+    def __init__(self, margin=80,length=3,grid_width=30,grid_height=30, grid_pts=30,fps=10):
+        # Init attributes
         self.grid_width=grid_width
         self.grid_height=grid_height
         self.grid_pts=grid_pts
@@ -12,12 +16,16 @@ class Snake:
         self.default_length=length
         self.attempt=0
         self.fps=fps
+        # Setup pygame
         pygame.init()
         self.font=pygame.font.SysFont(pygame.font.get_default_font(), int(self.margin/2))
         self.font_small=pygame.font.SysFont(pygame.font.get_default_font(), int(self.margin/2.5))
         self.screen=pygame.display.set_mode((grid_width*grid_pts,grid_height*grid_pts+margin))
 
     def new_game(self):
+        """
+        Reset game state
+        """
         self.snake=[(0,0)]*self.default_length
         self.direction=3 # Like clock (12=up, 3=right, 6=bottom, 9=left)
         self.new_apple()
@@ -25,25 +33,36 @@ class Snake:
         self.attempt+=1
 
     def draw_pts(self,x,y,color=(255,255,255)):
+        """
+        Draw element on the snake area
+        """
         rect=pygame.Rect(self.grid_pts*x, self.grid_pts*y+self.margin, self.grid_pts, self.grid_pts)
         pygame.draw.rect(self.screen,color,rect, 0)
 
-    def draw_infos(self,color=(255,255,255),thickness=5):
+    def draw_infos(self,color=(255,255,255),thickness=10):
+        """
+        Draw the information bar
+        """
+        # Draw separator
         rect=pygame.Rect(0, self.margin-thickness, self.grid_width*self.grid_pts, thickness)
-        pygame.draw.rect(self.screen,color,rect, 0)
-        text = self.font.render('Score '+str(self.score)+"     Length "+str(len(self.snake)), True, color)
+        pygame.draw.rect(self.screen,(180,180,180),rect, 0)
+        # Draw score
+        text = self.font.render('Score: '+str(self.score)+"       Length: "+str(len(self.snake))+'       Attempt: '+str(self.attempt), True, color)
         text_center=text.get_rect(center = (self.grid_width*self.grid_pts // 2, (self.margin-thickness) // 2))
         self.screen.blit(text, text_center)
-        text = self.font_small.render('Attempt '+str(self.attempt), True, color)
-        text_center=text.get_rect(center = (self.grid_width*self.grid_pts // 2, (self.margin-thickness) // 2))
-        self.screen.blit(text, (self.grid_pts/2,text_center[1]))
-
+    
     def new_apple(self):
+        """
+        Create a new apple
+        """
         self.apple=(random.randint(0,self.grid_width-1),random.randint(0,self.grid_height-1))
         while self.apple in self.snake:
             self.apple=(random.randint(0,self.grid_width),random.randint(0,self.grid_height))
 
     def move(self):
+        """
+        Move the snake
+        """
         # Update tail
         if len(self.snake)>1:
             tmp=self.snake[0]
@@ -63,12 +82,18 @@ class Snake:
             self.snake[0]=(h[0],h[1]+1)
 
     def draw_snake(self):
+        """
+        Draw the snake with color effects
+        """
         for i in range(0,len(self.snake)):
             color=(0,150,150) if i==0 else (0,max(255-i*10,120),0) 
             elt=self.snake[i]
             self.draw_pts(elt[0],elt[1],color=color)
 
     def has_loose(self):
+        """
+        Return true if the game is loose
+        """
         if self.snake.count(self.snake[0])>1:
             return(True)
         h=self.snake[0]
@@ -78,13 +103,16 @@ class Snake:
 
 
     def run(self, event_handler=None):
+        """
+        Play a game (one attempt)
+        """
         clock = pygame.time.Clock()
         ignore_has_loose=True
         self.new_game()
         while True:
             self.screen.fill((0,0,0))
             self.draw_snake()
-            self.draw_pts(self.apple[0],self.apple[1],color=(255,0,0))
+            self.draw_pts(self.apple[0],self.apple[1],color=(210,0,0))
             self.draw_infos()
             # Check for loose
             if not(ignore_has_loose) and self.has_loose():
@@ -109,6 +137,7 @@ class Snake:
                     elif event.key == pygame.K_DOWN and self.direction != 12:
                         self.direction=6
                         break
+            # Check if an event handler is available
             if event_handler!=None:
                 event_handler(self)
             self.move()