diff --git a/packages/frontend-misskey-world-engine/src/EngineBase.ts b/packages/frontend-misskey-world-engine/src/EngineBase.ts
index 09384ade26..772ecdf557 100644
--- a/packages/frontend-misskey-world-engine/src/EngineBase.ts
+++ b/packages/frontend-misskey-world-engine/src/EngineBase.ts
@@ -21,7 +21,7 @@ export abstract class EngineBase<EVs extends EngineBaseEvents> extends EventEmit
 }> {
 	declare _eventTypes?: EVs;
 
-	protected engine: BABYLON.WebGPUEngine;
+	protected babylonEngine: BABYLON.WebGPUEngine;
 	public scene: BABYLON.Scene;
 	abstract sr: BABYLON.SnapshotRenderingHelper;
 	abstract lightContainer: BABYLON.ClusteredLightContainer;
@@ -44,14 +44,14 @@ export abstract class EngineBase<EVs extends EngineBaseEvents> extends EventEmit
 	}> = new EventEmitter();
 
 	constructor(options: {
-		engine: BABYLON.WebGPUEngine;
+		babylonEngine: BABYLON.WebGPUEngine;
 		fps: number | null;
 	}) {
 		super();
 
 		this.fps = options.fps;
 
-		this.engine = options.engine;
+		this.babylonEngine = options.babylonEngine;
 		// doNotHandleContextLostがtrueだとそもそも呼ばれない
 		//babylonEngine.onContextLostObservable.add(() => {
 		//	os.alert({
@@ -60,18 +60,18 @@ export abstract class EngineBase<EVs extends EngineBaseEvents> extends EventEmit
 		//		text: i18n.ts._miWorld.crushed_description,
 		//	});
 		//});
-		this.engine._device.lost.then((info) => { // TODO: babylonEngineの内部プロパティに依存しない方法をforumで聞く
+		this.babylonEngine._device.lost.then((info) => { // TODO: babylonEngineの内部プロパティに依存しない方法をforumで聞く
 			this.ev('contextlost', { reason: info.reason, message: info.message }); // transferableじゃないデータが含まれている可能性も考慮してinfoそのままは送らない
 		});
 
-		this.scene = new BABYLON.Scene(this.engine);
+		this.scene = new BABYLON.Scene(this.babylonEngine);
 	}
 
 	private currentRafId: number | null = null;
 
 	protected startRenderLoop() {
 		if (this.fps == null) {
-			this.engine.runRenderLoop(() => {
+			this.babylonEngine.runRenderLoop(() => {
 				this.scene.render();
 			});
 		} else {
@@ -88,9 +88,9 @@ export abstract class EngineBase<EVs extends EngineBaseEvents> extends EventEmit
 				if (delta <= interval) return;
 				then = timeStamp - (delta % interval);
 
-				this.engine.beginFrame();
+				this.babylonEngine.beginFrame();
 				this.scene.render();
-				this.engine.endFrame();
+				this.babylonEngine.endFrame();
 			};
 
 			// workerで実行される可能性がある
@@ -99,7 +99,7 @@ export abstract class EngineBase<EVs extends EngineBaseEvents> extends EventEmit
 	}
 
 	public pauseRender() { // TODO: srと同じく参照カウント方式にした方が便利そう
-		this.engine.stopRenderLoop();
+		this.babylonEngine.stopRenderLoop();
 		if (this.currentRafId != null) {
 			// workerで実行される可能性がある
 			cancelAnimationFrame(this.currentRafId);
@@ -118,7 +118,7 @@ export abstract class EngineBase<EVs extends EngineBaseEvents> extends EventEmit
 	}
 
 	public async takeScreenshot() {
-		return await BABYLON.Tools.CreateScreenshotAsync(this.engine, this.scene.activeCamera!, { precision: 1 });
+		return await BABYLON.Tools.CreateScreenshotAsync(this.babylonEngine, this.scene.activeCamera!, { precision: 1 });
 	}
 
 	public abstract resize(): void;
@@ -223,7 +223,7 @@ export abstract class EngineBase<EVs extends EngineBaseEvents> extends EventEmit
 	}
 
 	public destroy() {
-		this.engine.stopRenderLoop();
+		this.babylonEngine.stopRenderLoop();
 		if (this.currentRafId != null) {
 			// workerで実行される可能性がある
 			cancelAnimationFrame(this.currentRafId);
@@ -232,7 +232,7 @@ export abstract class EngineBase<EVs extends EngineBaseEvents> extends EventEmit
 		for (const playerContainer of this.playerContainers) {
 			playerContainer.destroy();
 		}
-		this.engine.dispose();
+		this.babylonEngine.dispose();
 		this.scene.dispose();
 		this.disposed = true;
 	}
diff --git a/packages/frontend-misskey-world-engine/src/avatarPreviewEngine.ts b/packages/frontend-misskey-world-engine/src/avatarPreviewEngine.ts
index 9686bcceee..24b93645b5 100644
--- a/packages/frontend-misskey-world-engine/src/avatarPreviewEngine.ts
+++ b/packages/frontend-misskey-world-engine/src/avatarPreviewEngine.ts
@@ -28,12 +28,12 @@ export class AvatarPreviewEngine extends EngineBase<{ // PlayerPreviewEngineに
 	private profile: PlayerProfile;
 
 	constructor(profile: PlayerProfile, options: {
-		engine: BABYLON.WebGPUEngine;
+		babylonEngine: BABYLON.WebGPUEngine;
 		graphicsQuality: number;
 		fps: number | null;
 	}) {
 		super({
-			engine: options.engine,
+			babylonEngine: options.babylonEngine,
 			fps: options.fps,
 		});
 
@@ -193,7 +193,7 @@ export class AvatarPreviewEngine extends EngineBase<{ // PlayerPreviewEngineに
 		// ~~...が、一旦無効にしたらしたで複数のマテリアルがそれぞれ入れ替わる(?)という謎の現象が発生するためコメントアウトしとく(エラー出てもレンダリングが止まったりするわけでもないし)~~
 		// ↑追記: engine.resizeした後に一瞬待つことで回避できることが判明
 		this.sr.disableSnapshotRendering();
-		this.engine.resize(true);
+		this.babylonEngine.resize(true);
 		// workerで実行される可能性がある
 
 		setTimeout(() => {
diff --git a/packages/frontend-misskey-world-engine/src/avatarPreviewEngineNonWorker.ts b/packages/frontend-misskey-world-engine/src/avatarPreviewEngineNonWorker.ts
index a699dd4a49..8e958828d3 100644
--- a/packages/frontend-misskey-world-engine/src/avatarPreviewEngineNonWorker.ts
+++ b/packages/frontend-misskey-world-engine/src/avatarPreviewEngineNonWorker.ts
@@ -21,7 +21,7 @@ export async function createAvatarPreviewEngine(params: {
 	if (params.options.resolution === 0.5) babylonEngine.setHardwareScalingLevel(2);
 
 	const engine = new AvatarPreviewEngine(params.profile, {
-		engine: babylonEngine,
+		babylonEngine: babylonEngine,
 		...params.options,
 	});
 
diff --git a/packages/frontend-misskey-world-engine/src/avatarPreviewEngineWorker.ts b/packages/frontend-misskey-world-engine/src/avatarPreviewEngineWorker.ts
index 99556e512e..a521203f28 100644
--- a/packages/frontend-misskey-world-engine/src/avatarPreviewEngineWorker.ts
+++ b/packages/frontend-misskey-world-engine/src/avatarPreviewEngineWorker.ts
@@ -29,7 +29,7 @@ onmessage = async (event) => {
 			if (event.data.options.resolution === 0.5) babylonEngine.setHardwareScalingLevel(2);
 
 			engine = new AvatarPreviewEngine(profile, {
-				engine: babylonEngine,
+				babylonEngine: babylonEngine,
 				...event.data.options,
 			});
 
diff --git a/packages/frontend-misskey-world-engine/src/engine.ts b/packages/frontend-misskey-world-engine/src/engine.ts
index a1da0a648c..6e0834de99 100644
--- a/packages/frontend-misskey-world-engine/src/engine.ts
+++ b/packages/frontend-misskey-world-engine/src/engine.ts
@@ -44,7 +44,7 @@ export class WorldEngine extends EngineBase<{
 	private isGodMode = false;
 
 	constructor(options: {
-		engine: BABYLON.WebGPUEngine;
+		babylonEngine: BABYLON.WebGPUEngine;
 		graphicsQuality: number;
 		fps: number | null;
 		antialias: boolean;
@@ -54,7 +54,7 @@ export class WorldEngine extends EngineBase<{
 		show2dAvatarOnAvatar: boolean;
 	}) {
 		super({
-			engine: options.engine,
+			babylonEngine: options.babylonEngine,
 			fps: options.fps,
 		});
 
@@ -259,7 +259,7 @@ export class WorldEngine extends EngineBase<{
 	}
 
 	public resize() {
-		this.engine.resize(true);
+		this.babylonEngine.resize(true);
 	}
 
 	public destroy() {
diff --git a/packages/frontend-misskey-world-engine/src/nonWorker.ts b/packages/frontend-misskey-world-engine/src/nonWorker.ts
index 62a78c75b8..ec5a6e1bda 100644
--- a/packages/frontend-misskey-world-engine/src/nonWorker.ts
+++ b/packages/frontend-misskey-world-engine/src/nonWorker.ts
@@ -30,7 +30,7 @@ export async function createWorldEngine(params: {
 	if (params.options.resolution === 0.5) babylonEngine.setHardwareScalingLevel(2);
 
 	const engine = new WorldEngine({
-		engine: babylonEngine,
+		babylonEngine: babylonEngine,
 		...params.options,
 	});
 
diff --git a/packages/frontend-misskey-world-engine/src/room/engine.ts b/packages/frontend-misskey-world-engine/src/room/engine.ts
index 26298fb0ba..0089ce2041 100644
--- a/packages/frontend-misskey-world-engine/src/room/engine.ts
+++ b/packages/frontend-misskey-world-engine/src/room/engine.ts
@@ -202,7 +202,7 @@ export class RoomEngine extends EngineBase<{
 	private inited = false;
 
 	constructor(roomState: RoomState, roomAttachments: RoomAttachments, options: {
-		engine: BABYLON.WebGPUEngine;
+		babylonEngine: BABYLON.WebGPUEngine;
 		graphicsQuality: number;
 		fps: number | null;
 		antialias: boolean;
@@ -212,7 +212,7 @@ export class RoomEngine extends EngineBase<{
 		show2dAvatarOnAvatar: boolean;
 	}) {
 		super({
-			engine: options.engine,
+			babylonEngine: options.babylonEngine,
 			fps: options.fps,
 		});
 
@@ -1560,7 +1560,7 @@ export class RoomEngine extends EngineBase<{
 		// ~~...が、一旦無効にしたらしたで複数のマテリアルがそれぞれ入れ替わる(?)という謎の現象が発生するためコメントアウトしとく(エラー出てもレンダリングが止まったりするわけでもないし)~~
 		// ↑追記: engine.resizeした後に一瞬待つことで回避できることが判明
 		this.sr.disableSnapshotRendering();
-		this.engine.resize(true);
+		this.babylonEngine.resize(true);
 		// workerで実行される可能性がある
 
 		setTimeout(() => {
diff --git a/packages/frontend-misskey-world-engine/src/room/nonWorker.ts b/packages/frontend-misskey-world-engine/src/room/nonWorker.ts
index c254cc086d..b045661adf 100644
--- a/packages/frontend-misskey-world-engine/src/room/nonWorker.ts
+++ b/packages/frontend-misskey-world-engine/src/room/nonWorker.ts
@@ -33,7 +33,7 @@ export async function createRoomEngine(params: {
 	if (params.options.resolution === 0.5) babylonEngine.setHardwareScalingLevel(2);
 
 	const engine = new RoomEngine(params.roomState, params.roomAttachments, {
-		engine: babylonEngine,
+		babylonEngine: babylonEngine,
 		...params.options,
 	});
 
diff --git a/packages/frontend-misskey-world-engine/src/room/previewEngine.ts b/packages/frontend-misskey-world-engine/src/room/previewEngine.ts
index eea4f84118..dd54ba01ed 100644
--- a/packages/frontend-misskey-world-engine/src/room/previewEngine.ts
+++ b/packages/frontend-misskey-world-engine/src/room/previewEngine.ts
@@ -34,12 +34,12 @@ export class RoomFurniturePreviewEngine extends EngineBase<{
 	private graphicsQuality: number;
 
 	constructor(options: {
-		engine: BABYLON.WebGPUEngine;
+		babylonEngine: BABYLON.WebGPUEngine;
 		graphicsQuality: number;
 		fps: number | null;
 	}) {
 		super({
-			engine: options.engine,
+			babylonEngine: options.babylonEngine,
 			fps: options.fps,
 		});
 
@@ -140,7 +140,7 @@ export class RoomFurniturePreviewEngine extends EngineBase<{
 				this.zGridPreviewPlane.isVisible = false;
 
 				window.setTimeout(() => {
-					BABYLON.Tools.CreateScreenshotUsingRenderTarget(this.engine, camera, { width: 256, height: 256 }, undefined, undefined, undefined, true, `${camelToKebab(this.furnitureContainer.type!)}.png`);
+					BABYLON.Tools.CreateScreenshotUsingRenderTarget(this.babylonEngine, camera, { width: 256, height: 256 }, undefined, undefined, undefined, true, `${camelToKebab(this.furnitureContainer.type!)}.png`);
 				}, 100);
 			};
 		}
@@ -308,7 +308,7 @@ export class RoomFurniturePreviewEngine extends EngineBase<{
 		// ~~...が、一旦無効にしたらしたで複数のマテリアルがそれぞれ入れ替わる(?)という謎の現象が発生するためコメントアウトしとく(エラー出てもレンダリングが止まったりするわけでもないし)~~
 		// ↑追記: engine.resizeした後に一瞬待つことで回避できることが判明
 		this.sr.disableSnapshotRendering();
-		this.engine.resize(true);
+		this.babylonEngine.resize(true);
 		// workerで実行される可能性がある
 
 		setTimeout(() => {
diff --git a/packages/frontend-misskey-world-engine/src/room/previewEngineNonWorker.ts b/packages/frontend-misskey-world-engine/src/room/previewEngineNonWorker.ts
index 7c76434e08..dd7ab691a0 100644
--- a/packages/frontend-misskey-world-engine/src/room/previewEngineNonWorker.ts
+++ b/packages/frontend-misskey-world-engine/src/room/previewEngineNonWorker.ts
@@ -20,7 +20,7 @@ export async function createRoomPreviewEngine(params: {
 	if (params.options.resolution === 0.5) babylonEngine.setHardwareScalingLevel(2);
 
 	const engine = new RoomFurniturePreviewEngine({
-		engine: babylonEngine,
+		babylonEngine: babylonEngine,
 		...params.options,
 	});
 
diff --git a/packages/frontend-misskey-world-engine/src/room/previewEngineWorker.ts b/packages/frontend-misskey-world-engine/src/room/previewEngineWorker.ts
index a0f6da3557..0928348071 100644
--- a/packages/frontend-misskey-world-engine/src/room/previewEngineWorker.ts
+++ b/packages/frontend-misskey-world-engine/src/room/previewEngineWorker.ts
@@ -27,7 +27,7 @@ onmessage = async (event) => {
 			if (event.data.options.resolution === 0.5) babylonEngine.setHardwareScalingLevel(2);
 
 			engine = new RoomFurniturePreviewEngine({
-				engine: babylonEngine,
+				babylonEngine: babylonEngine,
 				...event.data.options,
 			});
 
diff --git a/packages/frontend-misskey-world-engine/src/room/worker.ts b/packages/frontend-misskey-world-engine/src/room/worker.ts
index 3522932a20..df55ae6857 100644
--- a/packages/frontend-misskey-world-engine/src/room/worker.ts
+++ b/packages/frontend-misskey-world-engine/src/room/worker.ts
@@ -30,7 +30,7 @@ onmessage = async (event) => {
 			if (event.data.options.resolution === 0.5) babylonEngine.setHardwareScalingLevel(2);
 
 			engine = new RoomEngine(roomState, roomAttachments, {
-				engine: babylonEngine,
+				babylonEngine: babylonEngine,
 				...event.data.options,
 			});
 
diff --git a/packages/frontend-misskey-world-engine/src/worker.ts b/packages/frontend-misskey-world-engine/src/worker.ts
index 0208b10b49..ff82a2f6e2 100644
--- a/packages/frontend-misskey-world-engine/src/worker.ts
+++ b/packages/frontend-misskey-world-engine/src/worker.ts
@@ -27,7 +27,7 @@ onmessage = async (event) => {
 			if (event.data.options.resolution === 0.5) babylonEngine.setHardwareScalingLevel(2);
 
 			engine = new WorldEngine({
-				engine: babylonEngine,
+				babylonEngine: babylonEngine,
 				...event.data.options,
 			});