diff --git a/locales/ja-JP.yml b/locales/ja-JP.yml
index 4b1dfc414f..8c004a52d0 100644
--- a/locales/ja-JP.yml
+++ b/locales/ja-JP.yml
@@ -3565,3 +3565,4 @@ _room:
   yourDeviceNotSupported_title: "お使いのデバイスはMisskeyRoomをサポートしていません。"
   yourDeviceNotSupported_description: "MisskeyRoomを動作させるには、WebGPUをサポートするデバイスが必要です。"
   failedToInitialize: "初期化に失敗しました"
+  crushed_description: "バグ、またはデバイスのリソース不足の可能性が考えられます。"
diff --git a/packages/frontend/src/world/room/controller.ts b/packages/frontend/src/world/room/controller.ts
index a7f5177bca..3f7e4fb992 100644
--- a/packages/frontend/src/world/room/controller.ts
+++ b/packages/frontend/src/world/room/controller.ts
@@ -12,6 +12,8 @@ import type { ShallowRef } from 'vue';
 import type { RoomState } from './engine.js';
 import type { ObjectDef, RoomStateObject } from './object.js';
 import * as sound from '@/utility/sound.js';
+import * as os from '@/os.js';
+import { i18n } from '@/i18n.js';
 
 export type RoomControllerOptions = {
 	workerMode?: boolean;
@@ -83,6 +85,13 @@ export class RoomController {
 			const babylonEngine = new BABYLON.WebGPUEngine(canvas, { doNotHandleContextLost: true, powerPreference: 'high-performance' });
 			babylonEngine.compatibilityMode = false;
 			babylonEngine.enableOfflineSupport = false;
+			babylonEngine.onContextLostObservable.add(() => {
+				os.alert({
+					type: 'error',
+					title: i18n.ts.somethingHappened,
+					text: i18n.ts._room.crushed_description,
+				});
+			});
 			await babylonEngine.initAsync();
 			if (this.options.resolution === 2) babylonEngine.setHardwareScalingLevel(0.5);
 			if (this.options.resolution === 0.5) babylonEngine.setHardwareScalingLevel(2);
diff --git a/packages/i18n/src/autogen/locale.ts b/packages/i18n/src/autogen/locale.ts
index a3399d272e..eead62fdc5 100644
--- a/packages/i18n/src/autogen/locale.ts
+++ b/packages/i18n/src/autogen/locale.ts
@@ -13303,5 +13303,9 @@ export interface Locale extends ILocale {
          * 初期化に失敗しました
          */
         "failedToInitialize": string;
+        /**
+         * バグ、またはデバイスのリソース不足の可能性が考えられます。
+         */
+        "crushed_description": string;
     };
 }