diff --git a/apps/server/src/domains/game/GameManager.ts b/apps/server/src/domains/game/GameManager.ts
deleted file mode 100644
index cd8ab82..0000000
--- a/apps/server/src/domains/game/GameManager.ts
+++ /dev/null
@@ -1,47 +0,0 @@
-import { type TickData } from "./GameLoop";
-import { Player } from "./entities/Player.js";
-import { GameSessionService } from "./application/services/GameSessionService";
-
-// プレイヤー集合の生成・更新・参照管理クラス
-export class GameManager {
-  private gameSessionService: GameSessionService;
-
-  constructor() {
-    this.gameSessionService = new GameSessionService();
-  }
-
-  // 外部（GameHandlerなど）から開始時刻を取得できるようにする
-  getRoomStartTime(roomId: string): number | undefined {
-    return this.gameSessionService.getRoomStartTime(roomId);
-  }
-
-  // プレイヤー登録解除処理
-  removePlayer(id: string) {
-    this.gameSessionService.removePlayer(id);
-  }
-
-  // 指定プレイヤー座標更新処理
-  movePlayer(id: string, x: number, y: number) {
-    this.gameSessionService.movePlayer(id, x, y);
-  }
-
-  /**
-   * 20Hz固定のゲームループを開始する
-   * @param roomId ルームID
-   * @param playerIds このルームに参加しているプレイヤーのIDリスト
-   * @param onTick 毎フレーム実行される送信用のコールバック関数
-   */
-  startGameLoop(
-    roomId: string, 
-    playerIds: string[], 
-    onTick: (data: TickData) => void,
-    onGameEnd: () => void
-  ) {
-    this.gameSessionService.startGameLoop(roomId, playerIds, onTick, onGameEnd);
-  }
-
-  // 指定ルームのプレイヤーを取得
-  getRoomPlayers(roomId: string): Player[] {
-    return this.gameSessionService.getRoomPlayers(roomId);
-  }
-}
\ No newline at end of file
diff --git a/apps/server/src/domains/game/GameSessionManager.ts b/apps/server/src/domains/game/GameSessionManager.ts
new file mode 100644
index 0000000..021f3f3
--- /dev/null
+++ b/apps/server/src/domains/game/GameSessionManager.ts
@@ -0,0 +1,47 @@
+import { type TickData } from "./GameLoop";
+import { Player } from "./entities/Player.js";
+import { GameSessionService } from "./application/services/GameSessionService";
+
+// ルーム単位セッションの生成・更新・参照管理クラス
+export class GameSessionManager {
+  private gameSessionService: GameSessionService;
+
+  constructor() {
+    this.gameSessionService = new GameSessionService();
+  }
+
+  // 外部（GameHandlerなど）から開始時刻を取得できるようにする
+  getRoomStartTime(roomId: string): number | undefined {
+    return this.gameSessionService.getRoomStartTime(roomId);
+  }
+
+  // プレイヤー登録解除処理
+  removePlayer(id: string) {
+    this.gameSessionService.removePlayer(id);
+  }
+
+  // 指定プレイヤー座標更新処理
+  movePlayer(id: string, x: number, y: number) {
+    this.gameSessionService.movePlayer(id, x, y);
+  }
+
+  /**
+   * 20Hz固定のゲームループを開始する
+   * @param roomId ルームID
+   * @param playerIds このルームに参加しているプレイヤーのIDリスト
+   * @param onTick 毎フレーム実行される送信用のコールバック関数
+   */
+  startRoomSession(
+    roomId: string, 
+    playerIds: string[], 
+    onTick: (data: TickData) => void,
+    onGameEnd: () => void
+  ) {
+    this.gameSessionService.startRoomSession(roomId, playerIds, onTick, onGameEnd);
+  }
+
+  // 指定ルームのプレイヤーを取得
+  getRoomPlayers(roomId: string): Player[] {
+    return this.gameSessionService.getRoomPlayers(roomId);
+  }
+}
\ No newline at end of file
diff --git a/apps/server/src/domains/game/application/ports/gameUseCasePorts.ts b/apps/server/src/domains/game/application/ports/gameUseCasePorts.ts
index 2d41bd2..7cdb2d0 100644
--- a/apps/server/src/domains/game/application/ports/gameUseCasePorts.ts
+++ b/apps/server/src/domains/game/application/ports/gameUseCasePorts.ts
@@ -2,7 +2,7 @@
 import type { playerTypes } from "@repo/shared";
 
 export interface StartGamePort {
-  startGameLoop(
+  startRoomSession(
     roomId: string,
     playerIds: string[],
     onTick: (data: TickData) => void,
diff --git a/apps/server/src/domains/game/application/services/GameSessionService.ts b/apps/server/src/domains/game/application/services/GameSessionService.ts
index 53e9075..634ac0a 100644
--- a/apps/server/src/domains/game/application/services/GameSessionService.ts
+++ b/apps/server/src/domains/game/application/services/GameSessionService.ts
@@ -20,7 +20,7 @@
     return this.sessions.get(roomId)?.getPlayers() ?? [];
   }
 
-  public startGameLoop(
+  public startRoomSession(
     roomId: string,
     playerIds: string[],
     onTick: (data: TickData) => void,
diff --git a/apps/server/src/domains/game/application/useCases/startGameUseCase.ts b/apps/server/src/domains/game/application/useCases/startGameUseCase.ts
index 835e92a..b8991db 100644
--- a/apps/server/src/domains/game/application/useCases/startGameUseCase.ts
+++ b/apps/server/src/domains/game/application/useCases/startGameUseCase.ts
@@ -55,7 +55,7 @@
 
   const playerIds = room.players.map((p: { id: string }) => p.id);
 
-  gameManager.startGameLoop(
+  gameManager.startRoomSession(
     room.roomId,
     playerIds,
     (tickData) => {
diff --git a/apps/server/src/network/SocketManager.ts b/apps/server/src/network/SocketManager.ts
index 39372ed..f986526 100644
--- a/apps/server/src/network/SocketManager.ts
+++ b/apps/server/src/network/SocketManager.ts
@@ -3,17 +3,17 @@
  * Socket.IO接続ハンドラの登録を初期化するマネージャ
  */
 import { Server } from "socket.io";
-import { GameManager } from "@server/domains/game/GameManager";
+import { GameSessionManager } from "@server/domains/game/GameSessionManager";
 import { RoomManager } from "@server/domains/room/RoomManager";
 import { registerConnectionHandlers } from "./handlers/registerConnectionHandlers";
 
 /** Socket.IOの接続ハンドラ登録を統括する */
 export class SocketManager {
   private io: Server;
-  private gameManager: GameManager;
+  private gameManager: GameSessionManager;
   private roomManager: RoomManager;
 
-  constructor(io: Server, gameManager: GameManager, roomManager: RoomManager) {
+  constructor(io: Server, gameManager: GameSessionManager, roomManager: RoomManager) {
     this.io = io;
     this.gameManager = gameManager;
     this.roomManager = roomManager;
diff --git a/apps/server/src/network/bootstrap/boot.ts b/apps/server/src/network/bootstrap/boot.ts
index 29ba1ff..59005a9 100644
--- a/apps/server/src/network/bootstrap/boot.ts
+++ b/apps/server/src/network/bootstrap/boot.ts
@@ -3,7 +3,7 @@
  * HTTPサーバにSocket.IOと各マネージャを接続して起動準備を行う
  */
 import type { Server as HttpServer } from "http";
-import { GameManager } from "@server/domains/game/GameManager";
+import { GameSessionManager } from "@server/domains/game/GameSessionManager";
 import { RoomManager } from "@server/domains/room/RoomManager";
 import { SocketManager } from "../SocketManager";
 import { createIo } from "./createIo";
@@ -12,7 +12,7 @@
 export const boot = (httpServer: HttpServer) => {
   // ネットワーク層とドメイン層の依存を構築する
   const io = createIo(httpServer);
-  const gameManager = new GameManager();
+  const gameManager = new GameSessionManager();
   const roomManager = new RoomManager();
   const socketManager = new SocketManager(io, gameManager, roomManager);
 
diff --git a/apps/server/src/network/handlers/game/handleGameDisconnect.ts b/apps/server/src/network/handlers/game/handleGameDisconnect.ts
index 0a7be66..6a25232 100644
--- a/apps/server/src/network/handlers/game/handleGameDisconnect.ts
+++ b/apps/server/src/network/handlers/game/handleGameDisconnect.ts
@@ -3,14 +3,14 @@
  * ゲーム切断ユースケースを呼び出してプレイヤー離脱を配信する
  */
 import { Server } from "socket.io";
-import { GameManager } from "@server/domains/game/GameManager";
+import { GameSessionManager } from "@server/domains/game/GameSessionManager";
 import { disconnectUseCase } from "@server/domains/game/application/useCases/disconnectUseCase";
 import { createGameDisconnectPublisher } from "./createGameEventPublisher";
 
 /** 切断したプレイヤーをゲーム管理から除外し通知する */
 export const handleGameDisconnect = (
   io: Server,
-  gameManager: GameManager,
+  gameManager: GameSessionManager,
   roomId: string | undefined,
   playerId: string
 ) => {
diff --git a/apps/server/src/network/handlers/game/registerGameHandlers.ts b/apps/server/src/network/handlers/game/registerGameHandlers.ts
index 29d3511..4e2f2c3 100644
--- a/apps/server/src/network/handlers/game/registerGameHandlers.ts
+++ b/apps/server/src/network/handlers/game/registerGameHandlers.ts
@@ -3,7 +3,7 @@
  * ゲーム関連イベントの受信ハンドラを登録する
  */
 import { Server, Socket } from "socket.io";
-import { GameManager } from "@server/domains/game/GameManager";
+import { GameSessionManager } from "@server/domains/game/GameSessionManager";
 import { RoomManager } from "@server/domains/room/RoomManager";
 import { protocol } from "@repo/shared";
 import type { playerTypes } from "@repo/shared";
@@ -20,7 +20,7 @@
 export const registerGameHandlers = (
   io: Server,
   socket: Socket,
-  gameManager: GameManager,
+  gameManager: GameSessionManager,
   roomManager: RoomManager
 ) => {
   const common = createCommonHandlerContext(io, socket);
diff --git a/apps/server/src/network/handlers/registerConnectionHandlers.ts b/apps/server/src/network/handlers/registerConnectionHandlers.ts
index fa871f9..a64fd5b 100644
--- a/apps/server/src/network/handlers/registerConnectionHandlers.ts
+++ b/apps/server/src/network/handlers/registerConnectionHandlers.ts
@@ -3,7 +3,7 @@
  * 接続時にルームとゲームの各ハンドラを登録する
  */
 import { Server, Socket } from "socket.io";
-import { GameManager } from "@server/domains/game/GameManager";
+import { GameSessionManager } from "@server/domains/game/GameSessionManager";
 import { RoomManager } from "@server/domains/room/RoomManager";
 import { protocol } from "@repo/shared";
 import { registerRoomHandlers, handleRoomDisconnect } from "./RoomHandler";
@@ -12,7 +12,7 @@
 
 type RegisterConnectionHandlersParams = {
   io: Server;
-  gameManager: GameManager;
+  gameManager: GameSessionManager;
   roomManager: RoomManager;
 };