diff --git a/game/constants.py b/game/constants.py
index cfb3d87..a187442 100644
--- a/game/constants.py
+++ b/game/constants.py
@@ -41,4 +41,5 @@ ACTION_KEYS: Final = {
 
 }
 
-WALL_CHAR: Final = ord('#')
+WALL_CHAR: Final = ord('_')
+VERTICAL_WALL_CHAR: Final = ord('|')
diff --git a/game/screens/game_screens.py b/game/screens/game_screens.py
index bbbfde1..778808e 100644
--- a/game/screens/game_screens.py
+++ b/game/screens/game_screens.py
@@ -14,7 +14,7 @@ from game.components import Action, Gold, Graphic, Position
 from game.constants import DIRECTION_KEYS, ACTION_KEYS
 from game.screens import Push, Screen, ScreenResult
 from game.tags import IsItem, IsPlayer, IsActor
-from game.constants import WALL_CHAR
+from game.constants import WALL_CHAR, VERTICAL_WALL_CHAR
 from game.screens import menu_screens
 from game.world_tools import world_pos_to_map_pos, map_pos_to_world_pos
 
@@ -94,7 +94,9 @@ class MainScreen(Screen):
         for (y, row) in enumerate(map.walkable):
             for (x, val) in enumerate(row):
                 pos = map_pos_to_world_pos(Position(x,y))
-                draw(pos, Graphic(0) if val else Graphic(WALL_CHAR))
+                graphic = Graphic(0) if val else\
+                        Graphic(WALL_CHAR) if map.walkable[y+1,x] else Graphic(VERTICAL_WALL_CHAR)
+                draw(pos, graphic)
         # draw all entities that are not actors
         for entity in g.world.Q.all_of(components=[Position, Graphic]).none_of(tags=[IsActor]):
             draw(entity.components[Position], entity.components[Graphic])
diff --git a/game/world_tools.py b/game/world_tools.py
index c7d1837..f311f69 100644
--- a/game/world_tools.py
+++ b/game/world_tools.py
@@ -83,6 +83,6 @@ def new_world() -> Registry:
 
 
 def unlock_door(door: Entity):
-    door.components[Graphic] = Graphic(ord("_"))
+    door.components[Graphic] = Graphic(ord("/"))
     door.components.pop(Action)
     add_wall(g.world, door.components[Position], remove=True)
diff --git a/main.py b/main.py
index 335a5f3..e5bc6d0 100755
--- a/main.py
+++ b/main.py
@@ -15,11 +15,11 @@ from game.screens.menu_screens import MainMenu
 def main() -> None:
     """Entry point function."""
     tileset = game.tilesetmanager.valid_tileset()
-    
+
     #tcod.tileset.procedural_block_elements(tileset=tileset)
     g.screens = [MainMenu()]
 
-    g.console = tcod.console.Console(80, 50)
+    g.console = tcod.console.Console(80, 35)
     with tcod.context.new(console=g.console, tileset=tileset) as g.context:
         game.screens.main_loop()