diff --git a/Assets/Builds.meta b/Assets/Builds.meta
deleted file mode 100644
index 8754605..0000000
--- a/Assets/Builds.meta
+++ /dev/null
@@ -1,8 +0,0 @@
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-folderAsset: yes
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diff --git a/Assets/Builds/Core_1.3.unitypackage.meta b/Assets/Builds/Core_1.3.unitypackage.meta
deleted file mode 100644
index 9960811..0000000
--- a/Assets/Builds/Core_1.3.unitypackage.meta
+++ /dev/null
@@ -1,7 +0,0 @@
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diff --git a/Assets/Builds/Core_1.4.unitypackage.meta b/Assets/Builds/Core_1.4.unitypackage.meta
deleted file mode 100644
index 61f0751..0000000
--- a/Assets/Builds/Core_1.4.unitypackage.meta
+++ /dev/null
@@ -1,7 +0,0 @@
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diff --git a/Assets/CoreCustumization/Scripts/RewardedButton.cs b/Assets/Core/Ads/RewardedButton.cs
similarity index 100%
rename from Assets/CoreCustumization/Scripts/RewardedButton.cs
rename to Assets/Core/Ads/RewardedButton.cs
diff --git a/Assets/CoreCustumization/Scripts/RewardedButton.cs.meta b/Assets/Core/Ads/RewardedButton.cs.meta
similarity index 100%
rename from Assets/CoreCustumization/Scripts/RewardedButton.cs.meta
rename to Assets/Core/Ads/RewardedButton.cs.meta
diff --git a/Assets/Core/Tools/Editor/UnusedAssetsMarker.cs b/Assets/Core/Tools/Editor/UnusedAssetsMarker.cs
new file mode 100644
index 0000000..533d31e
--- /dev/null
+++ b/Assets/Core/Tools/Editor/UnusedAssetsMarker.cs
@@ -0,0 +1,178 @@
+using System.Collections.Generic;
+using System.IO;
+using System.Linq;
+using System.Text.RegularExpressions;
+using UnityEditor;
+using UnityEditor.SceneManagement;
+using UnityEngine;
+using UnityEngine.SceneManagement;
+
+[InitializeOnLoad]
+public static class UnusedAssetsMarker
+{
+    private struct FolderInfo
+    {
+        public int usedCount;
+        public int unusedCount;
+    }
+
+    private static List<string> _usedAssets = new List<string>();
+    private static List<string> _allAssets = new List<string>();
+
+    private static Dictionary<string, FolderInfo> _foldersInfo = new Dictionary<string, FolderInfo>();
+    private static Dictionary<string, bool> _assetsInfo = new Dictionary<string, bool>();
+
+    static UnusedAssetsMarker()
+    {
+        ResearchDependecies();
+
+        EditorApplication.projectWindowItemOnGUI += DrawAssetDetails;
+    }
+
+    [MenuItem("Core/Research unused assets", false, 0)]
+    private static void ResearchDependecies()
+    {
+        _usedAssets = new List<string>();
+        _allAssets = AssetDatabase.GetAllAssetPaths().ToList();
+        _foldersInfo = new Dictionary<string, FolderInfo>();
+
+        for (int i = 0; i < EditorBuildSettings.scenes.Length; i++)
+        {
+            string scenePath = EditorBuildSettings.scenes[i].path;
+            string[] dependencies = AssetDatabase.GetDependencies(scenePath);
+            _usedAssets.AddRange(dependencies);
+        }
+
+        Object[] resources = Resources.LoadAll("");
+
+        for (int i = 0; i < resources.Length; i++)
+        {
+            _usedAssets.AddRange(AssetDatabase.GetDependencies(AssetDatabase.GetAssetPath(resources[i])));
+        }
+    }
+
+    private static void DrawAssetDetails(string guid, Rect rect)
+    {
+        string assetPath = AssetDatabase.GUIDToAssetPath(guid);
+
+        if (Application.isPlaying || Event.current.type != EventType.Repaint || IsInvalidFile(assetPath) || assetPath == "Assets")
+        {
+            GUI.backgroundColor = Color.white;
+            return;
+        }
+
+        if (AssetDatabase.IsValidFolder(assetPath))
+        {
+            if (IsMainListAsset(rect))
+            {
+                int usedCount = 0;
+                int unusedCount = 0;
+
+                if (_foldersInfo.ContainsKey(assetPath))
+                {
+                    usedCount = _foldersInfo[assetPath].usedCount;
+                    unusedCount = _foldersInfo[assetPath].unusedCount;
+                }
+                else
+                {
+                    string[] assetsInFolder = _allAssets.Where(path => path.Contains(assetPath) && !AssetDatabase.IsValidFolder(path)).ToArray();
+
+                    for (int i = 0; i < assetsInFolder.Length; i++)
+                    {
+                        if (IsAssetsUsed(assetsInFolder[i]) || IsInvalidFile(assetsInFolder[i]))
+                            usedCount++;
+                        else
+                            unusedCount++;
+                    }
+
+                    _foldersInfo.Add(assetPath, new FolderInfo { usedCount = usedCount, unusedCount = unusedCount });
+                }
+
+                GUIStyle style = new GUIStyle(EditorStyles.label);
+                style.alignment = TextAnchor.MiddleRight;
+
+                Rect newRect = rect;
+                newRect.x += rect.width - 305;
+                newRect.width = 200;
+                
+                GUI.Label(newRect, $"Used assets count: {usedCount}");
+
+                newRect = rect;
+                newRect.x += rect.width - 155;
+                newRect.width = 200;
+
+                GUI.Label(newRect, $"Unused assets count: {unusedCount}");
+            }
+
+            GUI.backgroundColor = Color.white;
+            return;
+        }
+
+        if (AssetDatabase.LoadAssetAtPath<Object>(assetPath) != null) {
+
+            bool isUsed = false;
+
+            if (_assetsInfo.ContainsKey(assetPath))
+                isUsed = _assetsInfo[assetPath];
+            else
+            {
+                isUsed = IsAssetsUsed(assetPath);
+                _assetsInfo.Add(assetPath, isUsed);
+            }
+
+            if (isUsed)
+            {
+                GUI.backgroundColor = Color.white;
+                return;
+            }
+
+            if (IsMainListAsset(rect))
+            {
+                Rect newRect = rect;
+                newRect.x += rect.width - 55;
+                newRect.width = 100;
+
+                GUIStyle style = new GUIStyle(EditorStyles.label);
+                style.alignment = TextAnchor.MiddleRight;
+
+                GUI.Label(newRect, "Unused");
+            }
+
+            if (isUsed)
+                GUI.color = Color.clear;
+            else
+                GUI.color = Color.red;
+
+            GUI.Box(rect, "");
+
+            GUI.color = Color.white;
+        }
+    }
+
+    private static bool IsMainListAsset(Rect rect)
+    {
+        if (rect.height > 20)
+            return false;
+
+        if (rect.x > 16)
+            return false;
+
+        return true;
+    }
+
+    private static bool IsInvalidFile(string path)
+    {
+        return
+            Path.GetExtension(path) == ".cs" ||
+            Path.GetExtension(path) == ".dll" ||
+            Path.GetExtension(path) == ".unity" ||
+            Regex.IsMatch(path, "[\\/\\\\]Editor[\\/\\\\]") == true ||
+            Regex.IsMatch(path, "[\\/\\\\]Resources[\\/\\\\]") == true ||
+            Regex.IsMatch(path, "[\\/\\\\]Plugins[\\/\\\\]") == true;
+    }
+
+    private static bool IsAssetsUsed(string path)
+    {
+        return _usedAssets.Contains(path);
+    }
+}
diff --git a/Assets/Core/Tools/Editor/UnusedAssetsMarker.cs.meta b/Assets/Core/Tools/Editor/UnusedAssetsMarker.cs.meta
new file mode 100644
index 0000000..3e5ca66
--- /dev/null
+++ b/Assets/Core/Tools/Editor/UnusedAssetsMarker.cs.meta
@@ -0,0 +1,11 @@
+fileFormatVersion: 2
+guid: 58c6268c557aa8c4fa61e6db42d2af44
+MonoImporter:
+  externalObjects: {}
+  serializedVersion: 2
+  defaultReferences: []
+  executionOrder: 0
+  icon: {instanceID: 0}
+  userData: 
+  assetBundleName: 
+  assetBundleVariant: 
diff --git a/Assets/Core/Window/Editor/CoreSettingsWindow.cs b/Assets/Core/Window/Editor/CoreSettingsWindow.cs
index 2c3a975..e37a5c6 100644
--- a/Assets/Core/Window/Editor/CoreSettingsWindow.cs
+++ b/Assets/Core/Window/Editor/CoreSettingsWindow.cs
@@ -24,7 +24,7 @@ namespace Core.Settings
 
         private bool m_IsInCompilation = false;
 
-        [MenuItem("Window/Core Settings", false, -1000)]
+        [MenuItem("Core/Settings", false, 1000)]
         public static void Init()
         {
             window = EditorWindow.GetWindow<CoreSettingsWindow>("Core Settings", typeof(SceneView));