diff --git a/project/code/TMV/Mission.cs b/project/code/TMV/Mission.cs
index 1e3802d..aa4e52e 100644
--- a/project/code/TMV/Mission.cs
+++ b/project/code/TMV/Mission.cs
@@ -38,6 +38,7 @@ public partial class Mission : Node3D
 	public bool Clear = false;
 	[Export]
 	public bool Dump = false;
+	public int LightmapLayers = 33;
 
 	string _campaignName;
 	string _missionName;
@@ -55,6 +56,10 @@ public partial class Mission : Node3D
 		_modelLoader = new ModelLoader(_installPaths);
 		_materials = new List<ShaderMaterial>();
 		_lmLayerMask = new Vector2I(~0, ~0);
+
+		var lightmapToggler = GetNode<Control>("%LightmapToggler") as LightmapLayerToggler;
+		lightmapToggler.Setup(this);
+
 		var missionSelector = GetNode<Control>("%MissionSelector") as MissionSelector;
 		missionSelector.pathManager = _installPaths;
 		missionSelector.MissionSelected += (string campaign, string mission) =>
@@ -362,7 +367,7 @@ public partial class Mission : Node3D
 		GD.Print($"Creating lightmap with bounds: ({bounds.Width}, {bounds.Height})");
 
 		var lightmapFormat = Image.Format.Rgba8;
-		var lmLayerCount = 33;
+		var lmLayerCount = 33; // TODO: Use LightmapLayers
 		var lmImages = new Godot.Collections.Array<Image>();
 		lmImages.Resize(lmLayerCount);
 		for (var i = 0; i < lmLayerCount; i++)
diff --git a/project/code/TMV/UI/LightmapLayerToggler.cs b/project/code/TMV/UI/LightmapLayerToggler.cs
new file mode 100644
index 0000000..a6b74e2
--- /dev/null
+++ b/project/code/TMV/UI/LightmapLayerToggler.cs
@@ -0,0 +1,30 @@
+using Godot;
+
+namespace KeepersCompound.TMV.UI;
+
+public partial class LightmapLayerToggler : Control
+{
+	public void Setup(Mission mission)
+	{
+		var layersNode = GetNode<GridContainer>("%Layers");
+		foreach (var node in layersNode.GetChildren())
+		{
+			node.QueueFree();
+		}
+
+		var layerCount = mission.LightmapLayers;
+		for (var i = 0; i < layerCount; i++)
+		{
+			var button = new Button
+			{
+				Text = i.ToString(),
+				ToggleMode = true
+			};
+			button.Pressed += () =>
+			{
+				mission.ToggleLmLayer(uint.Parse(button.Text));
+			};
+			layersNode.AddChild(button);
+		}
+	}
+}
diff --git a/project/scenes/main.tscn b/project/scenes/main.tscn
index 7df2331..c483343 100644
--- a/project/scenes/main.tscn
+++ b/project/scenes/main.tscn
@@ -1,8 +1,9 @@
-[gd_scene load_steps=5 format=3 uid="uid://boxi211q3kx6c"]
+[gd_scene load_steps=6 format=3 uid="uid://boxi211q3kx6c"]
 
 [ext_resource type="Script" path="res://project/code/TMV/Mission.cs" id="1_3gnqe"]
 [ext_resource type="Script" path="res://project/code/camera.gd" id="2_w5otl"]
 [ext_resource type="PackedScene" uid="uid://cekg1xb5f0ux1" path="res://project/scenes/ui/mission_selector.tscn" id="3_hwfcj"]
+[ext_resource type="PackedScene" uid="uid://0h2w7w84vbea" path="res://project/scenes/ui/lightmap_layer_toggler.tscn" id="4_naip8"]
 
 [sub_resource type="Environment" id="Environment_cckyk"]
 ambient_light_source = 2
@@ -23,5 +24,10 @@ script = ExtResource("2_w5otl")
 [node name="MissionSelector" parent="UI" instance=ExtResource("3_hwfcj")]
 unique_name_in_owner = true
 
+[node name="LightmapToggler" parent="UI" instance=ExtResource("4_naip8")]
+unique_name_in_owner = true
+
 [node name="WorldEnvironment" type="WorldEnvironment" parent="."]
 environment = SubResource("Environment_cckyk")
+
+[node name="MeshInstance3D" type="MeshInstance3D" parent="."]
diff --git a/project/scenes/ui/lightmap_layer_toggler.tscn b/project/scenes/ui/lightmap_layer_toggler.tscn
new file mode 100644
index 0000000..d3a8755
--- /dev/null
+++ b/project/scenes/ui/lightmap_layer_toggler.tscn
@@ -0,0 +1,34 @@
+[gd_scene load_steps=2 format=3 uid="uid://0h2w7w84vbea"]
+
+[ext_resource type="Script" path="res://project/code/TMV/UI/LightmapLayerToggler.cs" id="1_xwjtg"]
+
+[node name="LightmapToggler" type="Control"]
+layout_mode = 3
+anchors_preset = 0
+offset_right = 40.0
+offset_bottom = 40.0
+script = ExtResource("1_xwjtg")
+
+[node name="PanelContainer" type="PanelContainer" parent="."]
+layout_mode = 0
+offset_right = 40.0
+offset_bottom = 40.0
+
+[node name="MarginContainer" type="MarginContainer" parent="PanelContainer"]
+layout_mode = 2
+theme_override_constants/margin_left = 8
+theme_override_constants/margin_top = 8
+theme_override_constants/margin_right = 8
+theme_override_constants/margin_bottom = 8
+
+[node name="VBoxContainer" type="VBoxContainer" parent="PanelContainer/MarginContainer"]
+layout_mode = 2
+
+[node name="Label" type="Label" parent="PanelContainer/MarginContainer/VBoxContainer"]
+layout_mode = 2
+text = "Lightmap Layers"
+
+[node name="Layers" type="GridContainer" parent="PanelContainer/MarginContainer/VBoxContainer"]
+unique_name_in_owner = true
+layout_mode = 2
+columns = 8