diff --git a/Node2D.gd b/Node2D.gd
index bc349b1..bc2f66e 100644
--- a/Node2D.gd
+++ b/Node2D.gd
@@ -4,6 +4,18 @@ var PC = load('PC.tscn')
 var PCs = []
 var worldmap_blocks = []
 var sfx_buttons = []
+var block_labels = []
+
+func bin2str(bin: int) -> String:
+	var string := ''
+	for i in 8:
+		if i == 4:
+			string += '  '
+		if ((bin >> 7-i) & 0x01) != 0:
+			string += '1'
+		else:
+			string += '0'
+	return string
 
 func _ready():
 	Engine.set_target_fps(60)
@@ -29,11 +41,36 @@ func _ready():
 		# worldmap_blocks[-1].texture = SpriteLoader.worldmap_tile_atlas_textures[i]
 		worldmap_blocks[-1].material = SpriteLoader.shader_material.duplicate()
 		worldmap_blocks[-1].material.set_shader_param('palette', SpriteLoader.worldmap_palette_textures[i])
-		# worldmap_blocks[-1].rect_scale *= 2
-		worldmap_blocks[-1].rect_position.x = i*256
+		worldmap_blocks[-1].rect_scale *= 3
+		worldmap_blocks[-1].rect_position.x = i*256*3
 		worldmap_blocks[-1].rect_position.y = 280
 		add_child(worldmap_blocks[-1])
+		var x0 = i*256*3 + 4
+		var y0 = 280 + 12
+		for block in 0xC0:
+			var label = Label.new()
+			var p = MapLoader.worldmap_block_properties[i][block]
+			label.text = '%s\n%s\n%s' % [bin2str(p&0xff), bin2str((p>>8)&0xff), bin2str(p>>16)]
+			label.add_color_override('font_color_shadow', Color.black)
+			label.add_constant_override('shadow_as_outline', true)
+			label.rect_position.x = x0 + (block%16) * 48
+			label.rect_position.y = y0 + (block/16) * 48
+			label.rect_scale /= 2
+			add_child(label)
+			block_labels.append(label)
 	_create_sfx_buttons()
+	$BitSelector.connect('value_changed', self, '_update_block_mask')
+
+func _update_block_mask(value: int):
+	var mask = 0xFFFFFF if (value<0) else (1<<value)
+	$BitSelectorMask.text = '%s\n%s\n%s' % [bin2str(mask&0xff), bin2str((mask>>8)&0xff), bin2str(mask>>16)]
+	for i in block_labels.size():
+		var p = MapLoader.worldmap_block_properties[i/0xC0][i%0xC0]
+		if (p & mask) > 0:
+			block_labels[i].add_color_override('font_color', Color.white)
+		else:
+			block_labels[i].add_color_override('font_color', Color.black)
+
 
 
 func _create_sfx_buttons():
diff --git a/Node2D.tscn b/Node2D.tscn
index 56842e3..db79c16 100644
--- a/Node2D.tscn
+++ b/Node2D.tscn
@@ -23,6 +23,28 @@ text = "Stand"
 items = [ "Stand", null, false, 0, null, "Guard", null, false, 1, null, "Walk", null, false, 2, null, "Down", null, false, 3, null, "R_Swing", null, false, 4, null, "L_Swing", null, false, 5, null, "Cheer", null, false, 6, null, "Recoil", null, false, 7, null, "Chant", null, false, 8, null ]
 selected = 0
 
+[node name="BitSelector" type="SpinBox" parent="Node2D"]
+anchor_bottom = 0.67
+margin_left = 60.0
+margin_top = 180.0
+margin_right = 160.0
+margin_bottom = 204.0
+rect_scale = Vector2( 0.5, 0.5 )
+min_value = -1.0
+max_value = 23.0
+value = -1.0
+
+[node name="BitSelectorMask" type="Label" parent="Node2D"]
+anchor_bottom = 0.67
+margin_left = 120.0
+margin_top = 170.0
+margin_right = 220.0
+margin_bottom = 218.0
+rect_scale = Vector2( 0.5, 0.5 )
+text = "1111
+1111
+1111"
+
 [node name="ColorRect" type="ColorRect" parent="."]
 visible = false
 anchor_right = 1.0
diff --git a/project.godot b/project.godot
index a24d9d1..9d2146f 100644
--- a/project.godot
+++ b/project.godot
@@ -24,6 +24,7 @@ globals="*res://globals.gd"
 CommonGBA="*res://scripts/loaders/common_gba.gd"
 SoundLoader="*res://scripts/loaders/sound_loader.gd"
 SpriteLoader="*res://scripts/loaders/sprite_loader.gd"
+MapLoader="*res://scripts/loaders/map_loader.gd"
 RomLoader="*res://scripts/loaders/rom_loader.gd"
 
 [debug]
diff --git a/scripts/loaders/map_loader.gd b/scripts/loaders/map_loader.gd
new file mode 100644
index 0000000..50d973e
--- /dev/null
+++ b/scripts/loaders/map_loader.gd
@@ -0,0 +1,40 @@
+extends Node
+
+# World Map Block Properties
+# 3 bytes
+# Byte0: movement properties
+#	0x01 = passable on foot
+#	0x02 = passable on chocobo??
+#	0x04 = passable on black chocobo
+#	0x08 = passable on hiryuu??
+#	0x10 = set on deep water tiles, and all undersea tiles that aren't cliffs
+#	0x20 = set on deep water tiles only (not undersea)
+#	0x40 = Pretty much every tile aboveground has this. No undersea.
+#	0x80 = only set on clear sea floor. Submarine pathable??
+# Byte1: movement properties
+#	0x01 = (water flips) can move from this block rightwards
+#	0x02 = (water flips) can move from this block leftwards
+#	0x04 = (water flips) can move from this block downwards
+#	0x08 = (water flips) can move from this block upwards
+#	0x10 = most aboveground water tiles
+#	0x20 =
+#	0x40 =
+#	0x80 = Things airship can't land on??
+# Byte2: movement properties
+#	0x01 = Set on forests, deep water, void.
+#	0x02 = Set on deep water, void, desert.
+#	0x04 = Only set on diagonal land corners and Galuf World swamp
+#	0x08 = No hits.
+#	0x10 = Mountains and Exdeath's Castle
+#	0x20 = Only set on forests. Can land Black Chocobo? ...also waterfall, but not lower bounds of forests
+#	0x40 = Shallow water.
+#	0x80 =
+
+var worldmap_block_properties = []
+func load_worldmap_block_properties(rom: File):
+	rom.seek(0x0FEA00)
+	for world_ts in 3:
+		var ts_properties = PoolIntArray()
+		for block in 0xC0:
+			ts_properties.append(rom.get_16() + (rom.get_8() << 16))
+		worldmap_block_properties.append(ts_properties)
diff --git a/scripts/loaders/rom_loader.gd b/scripts/loaders/rom_loader.gd
index 39dcc3e..2512da4 100644
--- a/scripts/loaders/rom_loader.gd
+++ b/scripts/loaders/rom_loader.gd
@@ -10,6 +10,7 @@ func load_snes_rom(filename: String):
 	var error := rom_snes.open(filename, File.READ)
 	if error == OK:
 		SpriteLoader.load_snes_rom(rom_snes)
+		MapLoader.load_worldmap_block_properties(rom_snes)
 		var _thread_error = thread.start(SoundLoader, 'parse_rom', rom_snes)
 
 func _ready():