diff --git a/Assets/Scenes/WorldDemo.unity b/Assets/Scenes/WorldDemo.unity
index 79913e2..077cab6 100644
--- a/Assets/Scenes/WorldDemo.unity
+++ b/Assets/Scenes/WorldDemo.unity
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 MonoBehaviour:
@@ -618660,6 +618786,7 @@ MeshRenderer:
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   m_SortingLayer: 0
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 MonoBehaviour:
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+  m_MaskInteraction: 0
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+  serializedVersion: 12
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   m_InnerSpotAngle: 125.541885
-  m_CookieSize: 10
+  m_CookieSize2D: {x: 10, y: 10}
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     m_Resolution: -1
@@ -647338,6 +647468,7 @@ MeshRenderer:
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   m_SortingLayer: 0
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   m_SortingLayer: 0
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 MonoBehaviour:
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   m_SortingLayer: 0
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+  m_MaskInteraction: 0
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 MonoBehaviour:
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   m_SortingLayer: 0
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 MonoBehaviour:
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   m_SortingLayer: 0
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 MonoBehaviour:
@@ -701215,6 +701354,7 @@ MeshRenderer:
   m_SortingLayerID: 0
   m_SortingLayer: 0
   m_SortingOrder: 0
+  m_MaskInteraction: 0
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 MonoBehaviour:
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   m_PrefabAsset: {fileID: 0}
   m_GameObject: {fileID: 2079409883}
   m_Enabled: 1
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+  serializedVersion: 12
   m_Type: 0
   m_Color: {r: 0.81470275, g: 0.8679245, b: 0.8517872, a: 1}
   m_Intensity: 12451.4
   m_Range: 1672
   m_SpotAngle: 179
   m_InnerSpotAngle: 125.541885
-  m_CookieSize: 10
+  m_CookieSize2D: {x: 10, y: 10}
   m_Shadows:
     m_Type: 2
     m_Resolution: -1
@@ -713247,6 +713387,7 @@ MeshRenderer:
   m_SortingLayerID: 0
   m_SortingLayer: 0
   m_SortingOrder: 0
+  m_MaskInteraction: 0
   m_AdditionalVertexStreams: {fileID: 0}
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 MonoBehaviour:
@@ -725550,6 +725691,7 @@ MeshRenderer:
   m_SortingLayerID: 0
   m_SortingLayer: 0
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+  m_MaskInteraction: 0
   m_AdditionalVertexStreams: {fileID: 0}
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   - {fileID: 1093601639}
   - {fileID: 137952927}
+  - {fileID: 862353229}
diff --git a/Assets/Scripts/World/DemoWorldLoader.cs b/Assets/Scripts/World/DemoWorldLoader.cs
new file mode 100644
index 0000000..9582b47
--- /dev/null
+++ b/Assets/Scripts/World/DemoWorldLoader.cs
@@ -0,0 +1,22 @@
+using System.Collections.Generic;
+using UnityEngine;
+using UnityEngine.SceneManagement;
+
+public class DemoWorldLoader : MonoBehaviour{
+    public List<string> scenesName;
+    
+    void Start()
+    {
+        foreach (string thisScene in scenesName) {
+            if (!SceneManager.GetSceneByName(thisScene).isLoaded) {
+                SceneManager.LoadScene(thisScene, LoadSceneMode.Additive);
+            }
+        }    
+    }
+
+    // Update is called once per frame
+    void Update()
+    {
+        
+    }
+}
diff --git a/Assets/Scripts/World/DemoWorldLoader.cs.meta b/Assets/Scripts/World/DemoWorldLoader.cs.meta
new file mode 100644
index 0000000..ff17fb7
--- /dev/null
+++ b/Assets/Scripts/World/DemoWorldLoader.cs.meta
@@ -0,0 +1,2 @@
+fileFormatVersion: 2
+guid: c70ada0dc65c34f4eae269772a918a59
\ No newline at end of file