diff --git a/korman/exporter/rtlight.py b/korman/exporter/rtlight.py
index 8c3692f..7412dbb 100644
--- a/korman/exporter/rtlight.py
+++ b/korman/exporter/rtlight.py
@@ -112,14 +112,17 @@ class LightConverter:
         color_str = "({:.4f}, {:.4f}, {:.4f})".format(color[0], color[1], color[2])
         color.append(1.0)
 
+        # Do we *only* want a shadow?
+        shadow_only = bl_light.shadow_method != "NOSHADOW" and bl_light.use_only_shadow
+
         # Apply the colors
-        if bl_light.use_diffuse:
+        if bl_light.use_diffuse and not shadow_only:
             print("        Diffuse: {}".format(color_str))
             pl_light.diffuse = hsColorRGBA(*color)
         else:
             print("        Diffuse: OFF")
             pl_light.diffuse = hsColorRGBA(0.0, 0.0, 0.0, 1.0)
-        if bl_light.use_specular:
+        if bl_light.use_specular and not shadow_only:
             print("        Specular: {}".format(color_str))
             pl_light.setProperty(plLightInfo.kLPHasSpecular, True)
             pl_light.specular = hsColorRGBA(*color)
@@ -127,6 +130,15 @@ class LightConverter:
             print("        Specular: OFF")
             pl_light.specular = hsColorRGBA(0.0, 0.0, 0.0, 1.0)
 
+        # Crazy flags
+        rtlamp = bl_light.plasma_lamp
+        if rtlamp.light_group:
+            pl_light.setProperty(plLightInfo.kLPHasIncludes, True)
+            pl_light.setProperty(plLightInfo.kLPIncludesChars, rtlamp.affect_characters)
+        if rtlamp.cast_shadows:
+            pl_light.setProperty(plLightInfo.kLPShadowLightGroup, True)
+            pl_light.setProperty(plLightInfo.kLPShadowOnly, shadow_only)
+
         # AFAICT ambient lighting is never set in PlasmaMax...
         # If you can think of a compelling reason to support it, be my guest.
         pl_light.ambient = hsColorRGBA(0.0, 0.0, 0.0, 1.0)
diff --git a/korman/properties/__init__.py b/korman/properties/__init__.py
index 45e82d3..b24bb8e 100644
--- a/korman/properties/__init__.py
+++ b/korman/properties/__init__.py
@@ -15,6 +15,7 @@
 
 import bpy
 
+from .prop_lamp import *
 from . import modifiers
 from .prop_object import *
 from .prop_texture import *
@@ -22,6 +23,7 @@ from .prop_world import *
 
 
 def register():
+    bpy.types.Lamp.plasma_lamp = bpy.props.PointerProperty(type=PlasmaLamp)
     bpy.types.Object.plasma_net = bpy.props.PointerProperty(type=PlasmaNet)
     bpy.types.Object.plasma_object = bpy.props.PointerProperty(type=PlasmaObject)
     bpy.types.Texture.plasma_layer = bpy.props.PointerProperty(type=PlasmaLayer)
diff --git a/korman/render.py b/korman/render.py
index e996963..e0e7be7 100644
--- a/korman/render.py
+++ b/korman/render.py
@@ -46,7 +46,14 @@ def _whitelist_all(mod):
             getattr(attr, "COMPAT_ENGINES").add("PLASMA_GAME")
 
 from bl_ui import properties_data_lamp
-_whitelist_all(properties_data_lamp)
+properties_data_lamp.DATA_PT_context_lamp.COMPAT_ENGINES.add("PLASMA_GAME")
+properties_data_lamp.DATA_PT_preview.COMPAT_ENGINES.add("PLASMA_GAME")
+properties_data_lamp.DATA_PT_lamp.COMPAT_ENGINES.add("PLASMA_GAME")
+properties_data_lamp.DATA_PT_shadow.COMPAT_ENGINES.add("PLASMA_GAME")
+properties_data_lamp.DATA_PT_area.COMPAT_ENGINES.add("PLASMA_GAME")
+properties_data_lamp.DATA_PT_spot.COMPAT_ENGINES.add("PLASMA_GAME")
+properties_data_lamp.DATA_PT_falloff_curve.COMPAT_ENGINES.add("PLASMA_GAME")
+properties_data_lamp.DATA_PT_custom_props_lamp.COMPAT_ENGINES.add("PLASMA_GAME")
 del properties_data_lamp
 
 from bl_ui import properties_render
diff --git a/korman/ui/__init__.py b/korman/ui/__init__.py
index 00e2d3d..3a865c4 100644
--- a/korman/ui/__init__.py
+++ b/korman/ui/__init__.py
@@ -13,6 +13,7 @@
 #    You should have received a copy of the GNU General Public License
 #    along with Korman.  If not, see <http://www.gnu.org/licenses/>.
 
+from .ui_lamp import *
 from .ui_modifiers import *
 from .ui_object import *
 from .ui_texture import *