diff --git a/FDK/src/01.Framework/Core/Game.cs b/FDK/src/01.Framework/Core/Game.cs
index 791a12e6..ed8a3924 100644
--- a/FDK/src/01.Framework/Core/Game.cs
+++ b/FDK/src/01.Framework/Core/Game.cs
@@ -30,6 +30,7 @@ using SkiaSharp;
 using FDK;
 using Silk.NET.GLFW;
 using System.Runtime.InteropServices;
+using Silk.NET.Core;
 
 namespace SampleFramework
 {
@@ -43,6 +44,8 @@ namespace SampleFramework
 
         internal static List<Action> AsyncActions = new();
 
+        private string strIconFileName;
+
         protected string _Text = "";
         protected string Text
         {
@@ -244,11 +247,20 @@ namespace SampleFramework
             //GetError();
         }
 
+        private RawImage GetIconData(string fileName)
+        {
+            SKCodec codec = SKCodec.Create(fileName);
+            using SKBitmap bitmap = SKBitmap.Decode(codec, new SKImageInfo(codec.Info.Width, codec.Info.Height, SKColorType.Rgba8888));
+            return new RawImage(bitmap.Width, bitmap.Height, bitmap.GetPixelSpan().ToArray());
+        }
+
         /// <summary>
         /// Initializes a new instance of the <see cref="Game"/> class.
         /// </summary>
-        protected Game()
+        protected Game(string iconFileName)
         {
+            strIconFileName = iconFileName;
+
             MainThreadID = Thread.CurrentThread.ManagedThreadId;
             Configuration();
 
@@ -266,11 +278,13 @@ namespace SampleFramework
             options.API = GraphicsAPI.None;
             options.WindowBorder = WindowBorder.Resizable;
             options.Title = Text;
-            
+
+
             Silk.NET.Windowing.Glfw.GlfwWindowing.Use();
             //Silk.NET.Windowing.Sdl.SdlWindowing.Use();
 
             Window_ = Window.Create(options);
+
             Window_.Load += Window_Load;
             Window_.Closing += Window_Closing;
             Window_.Update += Window_Update;
@@ -393,6 +407,8 @@ namespace SampleFramework
 
         public void Window_Load()
         {
+            Window_.SetWindowIcon(new ReadOnlySpan<RawImage>(GetIconData(strIconFileName)));
+
             Context = new AngleContext(GraphicsDeviceType_, Window_);
             Context.MakeCurrent();
 
diff --git a/OpenTaiko/src/Common/TJAPlayer3.cs b/OpenTaiko/src/Common/TJAPlayer3.cs
index 09e2d704..2dec7fcc 100644
--- a/OpenTaiko/src/Common/TJAPlayer3.cs
+++ b/OpenTaiko/src/Common/TJAPlayer3.cs
@@ -539,7 +539,7 @@ namespace TJAPlayer3
 
         // コンストラクタ
 
-        public TJAPlayer3()
+        public TJAPlayer3() : base("OpenTaiko.ico")
 		{
 			TJAPlayer3.app = this;
 		}