diff --git a/game/construction/dwarf/high_tower.png b/game/construction/dwarf/high_tower.png
new file mode 100644
index 0000000..64ac94e
Binary files /dev/null and b/game/construction/dwarf/high_tower.png differ
diff --git a/game/construction/dwarf/high_tower_enter.png b/game/construction/dwarf/high_tower_enter.png
new file mode 100644
index 0000000..00a49a6
Binary files /dev/null and b/game/construction/dwarf/high_tower_enter.png differ
diff --git a/game/construction/dwarf/wall_corner.png b/game/construction/dwarf/wall_corner.png
new file mode 100644
index 0000000..4d67d5d
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diff --git a/game/construction/dwarf/wall_left.png b/game/construction/dwarf/wall_left.png
index 6d00b0a..6bb0f24 100644
Binary files a/game/construction/dwarf/wall_left.png and b/game/construction/dwarf/wall_left.png differ
diff --git a/game/construction/dwarf/wall_lower.png b/game/construction/dwarf/wall_lower.png
index 209cb79..511a7b4 100644
Binary files a/game/construction/dwarf/wall_lower.png and b/game/construction/dwarf/wall_lower.png differ
diff --git a/game/construction/dwarf/wall_lower_left.png b/game/construction/dwarf/wall_lower_left.png
deleted file mode 100644
index a19c18b..0000000
Binary files a/game/construction/dwarf/wall_lower_left.png and /dev/null differ
diff --git a/game/construction/dwarf/wall_lower_right.png b/game/construction/dwarf/wall_lower_right.png
deleted file mode 100644
index 4375f50..0000000
Binary files a/game/construction/dwarf/wall_lower_right.png and /dev/null differ
diff --git a/game/construction/dwarf/wall_right.png b/game/construction/dwarf/wall_right.png
index 72e8438..ebb2991 100644
Binary files a/game/construction/dwarf/wall_right.png and b/game/construction/dwarf/wall_right.png differ
diff --git a/game/construction/dwarf/wall_upper.png b/game/construction/dwarf/wall_upper.png
index 2f3718b..511a7b4 100644
Binary files a/game/construction/dwarf/wall_upper.png and b/game/construction/dwarf/wall_upper.png differ
diff --git a/game/construction/dwarf/wall_upper_left.png b/game/construction/dwarf/wall_upper_left.png
deleted file mode 100644
index 4375f50..0000000
Binary files a/game/construction/dwarf/wall_upper_left.png and /dev/null differ
diff --git a/game/construction/dwarf/wall_upper_right.png b/game/construction/dwarf/wall_upper_right.png
deleted file mode 100644
index a19c18b..0000000
Binary files a/game/construction/dwarf/wall_upper_right.png and /dev/null differ
diff --git a/source/main.adb b/source/main.adb
index 55c0356..a7e9da5 100644
--- a/source/main.adb
+++ b/source/main.adb
@@ -204,7 +204,7 @@ begin
 	world.configure;
 	--~ai.configure;
 
-	world.make     (world.grass, 240, 180, 8);
+	world.make     (world.grass, 640, 480, 8);
 	world.add_chad (player);
 
 	core.dash;