diff --git a/Editor/Commandline.cs b/Editor/Commandline.cs
index a731655..5001c63 100644
--- a/Editor/Commandline.cs
+++ b/Editor/Commandline.cs
@@ -1,8 +1,8 @@
-// Copyright (c) 2023 DeNA Co., Ltd.
+// Copyright (c) 2023-2024 DeNA Co., Ltd.
 // This software is released under the MIT License.
 
-using System.Reflection;
 using DeNA.Anjin.Settings;
+using TestHelper.RuntimeInternals;
 using UnityEditor;
 using UnityEditor.SceneManagement;
 using UnityEngine;
@@ -49,12 +49,12 @@ private static void Bootstrap()
                 return;
             }
 
-            // Show GameView window even in batchmode. It can bypass batchmode limitations. e.g., WaitForEndOfFrame.
-            FocusGameView();
-
             // Set first open Scene
             EditorSceneManager.playModeStartScene = myWantedStartScene;
 
+            // GameView resolution set and show window even in batchmode. It can bypass batchmode limitations. e.g., WaitForEndOfFrame.
+            SetGameViewResolution();
+
             // Activate autopilot and enter play mode
             var state = AutopilotState.Instance;
             state.launchFrom = LaunchType.Commandline;
@@ -85,14 +85,13 @@ private static string GetAutopilotSettingsFromArguments()
             return args.AutopilotSettings.Value();
         }
 
-        private static void FocusGameView()
+        private static void SetGameViewResolution()
         {
-            var assembly = Assembly.Load("UnityEditor.dll");
-            var viewClass = Application.isBatchMode
-                ? "UnityEditor.GameView"
-                : "UnityEditor.PlayModeView";
-            var gameView = assembly.GetType(viewClass);
-            EditorWindow.GetWindow(gameView, false, null, true);
+            var args = new Arguments();
+            var width = (uint)args.GameViewWidth.Value();
+            var height = (uint)args.GameViewHeight.Value();
+            var name = $"{width}x{height}";
+            GameViewControlHelper.SetResolution(width, height, name);
         }
     }
 }
diff --git a/Editor/DeNA.Anjin.Editor.asmdef b/Editor/DeNA.Anjin.Editor.asmdef
index 8d19fee..9c4aebb 100644
--- a/Editor/DeNA.Anjin.Editor.asmdef
+++ b/Editor/DeNA.Anjin.Editor.asmdef
@@ -4,8 +4,8 @@
     "references": [
         "UniTask",
         "DeNA.Anjin",
-        "TestHelper.Monkey.Annotations",
-        "TestHelper.Monkey"
+        "TestHelper.RuntimeInternals",
+        "TestHelper.Monkey.Annotations"
     ],
     "includePlatforms": [
         "Editor"
@@ -18,4 +18,4 @@
     "defineConstraints": [],
     "versionDefines": [],
     "noEngineReferences": false
-}
+}
\ No newline at end of file
diff --git a/README.md b/README.md
index 27c7285..b786aeb 100644
--- a/README.md
+++ b/README.md
@@ -207,6 +207,8 @@ For details on each argument, see the entry of the same name in the "Generate an
   <dt>TIME_SCALE</dt><dd>Specifies the Time.timeScale. Default is 1.0</dd>
   <dt>OUTPUT_ROOT_DIRECTORY_PATH</dt><dd>Output files root directory path used by Agents, Loggers, and Reporters.</dd>
   <dt>SCREENSHOTS_DIRECTORY_PATH</dt><dd>Screenshots output directory path used by Agents.</dd>
+  <dt>GAME_VIEW_WIDTH</dt><dd>Set GameView width. This argument is only used to launch in editor from command line. Default is 640.</dd>
+  <dt>GAME_VIEW_HEIGHT</dt><dd>Set GameView height. This argument is only used to launch in editor from command line. Default is 480.</dd>
 </dl>
 
 In both cases, the key should be prefixed with `-` and specified as `-LIFESPAN_SEC 60`.
diff --git a/README_ja.md b/README_ja.md
index 74b9343..9cff937 100644
--- a/README_ja.md
+++ b/README_ja.md
@@ -210,6 +210,8 @@ $(UNITY) \
   <dt>TIME_SCALE</dt><dd>Time.timeScaleを指定します。デフォルトは1.0</dd>
   <dt>OUTPUT_ROOT_DIRECTORY_PATH</dt><dd>Agent、Logger、および Reporter が出力するファイルのルートディレクトリパスを指定します</dd>
   <dt>SCREENSHOTS_DIRECTORY_PATH</dt><dd>Agent が撮影するスクリーンショットの出力ディレクトリパスを指定します</dd>
+  <dt>GAME_VIEW_WIDTH</dt><dd>GameView の幅を設定します。この引数は、コマンド ラインからエディターを起動する場合にのみ使用されます。デフォルト値は 640 です</dd>
+  <dt>GAME_VIEW_HEIGHT</dt><dd>GameView の高さを設定します。この引数は、コマンド ラインからエディターを起動する場合にのみ使用されます。デフォルト値は 480 です</dd>
 </dl>
 
 いずれも、キーの先頭に`-`を付けて`-LIFESPAN_SEC 60`のように指定してください。
diff --git a/Runtime/Settings/Arguments.cs b/Runtime/Settings/Arguments.cs
index 3bfff63..4031989 100644
--- a/Runtime/Settings/Arguments.cs
+++ b/Runtime/Settings/Arguments.cs
@@ -104,5 +104,17 @@ public class Arguments
         /// <see href="https://api.slack.com/web"/>
         /// </summary>
         public virtual IArgument<string> SlackChannels => new Argument<string>("SLACK_CHANNELS");
+
+        /// <summary>
+        /// <c>GameView</c> width.
+        /// This argument is only used to launch in editor from command line.
+        /// </summary>
+        public virtual IArgument<int> GameViewWidth => new Argument<int>("GAME_VIEW_WIDTH", 640);
+
+        /// <summary>
+        /// <c>GameView</c> height.
+        /// This argument is only used to launch in editor from command line.
+        /// </summary>
+        public virtual IArgument<int> GameViewHeight => new Argument<int>("GAME_VIEW_HEIGHT", 480);
     }
 }