diff --git a/resources/graphics/wall_outside.png b/resources/graphics/wall_outside.png
new file mode 100644
index 0000000..def82df
Binary files /dev/null and b/resources/graphics/wall_outside.png differ
diff --git a/robotgame/block.py b/robotgame/block.py
index db6cc1b..a34815d 100644
--- a/robotgame/block.py
+++ b/robotgame/block.py
@@ -31,11 +31,20 @@ import copy
 
 class Block(worldobject.WorldObject):
     def __init__(self, level, x, y, img_str='block1',
-                 movable=False, visible=True):
+                 movable=False, visible=True,
+                 width=1, height=1):
         self.__dict__.update(locals())
         worldobject.WorldObject.__init__(self, level, x, y,
                                          movable=movable, visible=visible)
 
+        for i in range(width):
+            for j in range(height):
+                if not i or not j :
+                    self.level.objects.append(
+                        InvisBlock(self.level,
+                                   self.x + 64 * i,
+                                   self.y - 48 * j))
+
         self.load()
 
         # self.orig_alphas = {
diff --git a/robotgame/level1.py b/robotgame/level1.py
index d8e7c93..348915f 100644
--- a/robotgame/level1.py
+++ b/robotgame/level1.py
@@ -63,12 +63,15 @@ class Level1(level.Level):
         self.player.set_init_pos()
 
         for i in range(self.dimensions[0]):
-            self.objects.append(block.InvisBlock(self, i * 64,
-                                                 0))
+            if not i % 3:
+                self.objects.append(block.Block(self, i * 64,
+                                                48 * 3,
+                                                self.imgs['wall_outside'],
+                                                width=3))
             self.objects.append(block.InvisBlock(self, i * 64,
                                                  (self.dimensions[1]) * 48))
         for i in range(self.dimensions[1]):
-            self.objects.append(block.InvisBlock(self, -64,
+            self.objects.append(block.InvisBlock(self, - 64,
                                                  i * 48))
             self.objects.append(block.InvisBlock(self, self.dimensions[0] * 64,
                                                  i * 48))
diff --git a/robotgame/level4.py b/robotgame/level4.py
index abb81d1..2ab5eea 100644
--- a/robotgame/level4.py
+++ b/robotgame/level4.py
@@ -57,13 +57,15 @@ class Level4(level.Level):
                               self.imgs['indoor%d' % random.randint(1, 6)]))
 
         self.draw_background()
-        
+
         self.playfield = lm.generate_simple_playfield(16)
 
         for (x, y), t in self.playfield.items():
             x1, y1 = 64 * x, 48 * (y + 1)
             if isinstance(t, lm.Source):
-                self.objects.append(block.Block(self, x1, y1, self.imgs['block3'], movable=False))
+                self.objects.append(block.Block(self, x1, y1,
+                                                self.imgs['block3'],
+                                                movable=False))
                 continue
             def mir(b, x1, y1):
                 def f(x, y):
@@ -114,7 +116,7 @@ class Level4(level.Level):
             self.lasers.append(laser.Laser(
                     self, (x0 * 64, y0 * 48),
                     (x1 * 64, y1 * 48)))
-            
+
     def draw(self, window):
         self._blit_background(window)
 
diff --git a/robotgame/loader.py b/robotgame/loader.py
index c207906..1d861fe 100644
--- a/robotgame/loader.py
+++ b/robotgame/loader.py
@@ -49,7 +49,7 @@ class Loader(object):
             self.imgs[o] = pygame.image.load(os.path.join(
                     self.directory, 'blocks', '%s.png' % o))
 
-        l = ['hole', 'well']
+        l = ['hole', 'well', 'wall', 'wall_outside']
         for o in l:
             self.imgs[o] = pygame.image.load(os.path.join(
                     self.directory, '%s.png' % o))