diff --git a/apps/client/src/network/handlers/socketEventBridge.ts b/apps/client/src/network/handlers/socketEventBridge.ts
index 655f720..7c7f602 100644
--- a/apps/client/src/network/handlers/socketEventBridge.ts
+++ b/apps/client/src/network/handlers/socketEventBridge.ts
@@ -19,16 +19,16 @@
 /** クライアント向けの型付きソケットイベント bridge を生成する */
 export const createClientSocketEventBridge = (socket: Socket) => {
   const bridgeTarget: SocketBridgeTarget = {
-    on: (event, callback) => {
-      socket.on(event, callback);
+    on: <TPayload>(event: string, callback: (payload: TPayload) => void) => {
+      socket.on(event, callback as (payload: unknown) => void);
     },
-    once: (event, callback) => {
-      socket.once(event, callback);
+    once: <TPayload>(event: string, callback: (payload: TPayload) => void) => {
+      socket.once(event, callback as (payload: unknown) => void);
     },
-    off: (event, callback) => {
-      socket.off(event, callback);
+    off: <TPayload>(event: string, callback: (payload: TPayload) => void) => {
+      socket.off(event, callback as (payload: unknown) => void);
     },
-    emit: (event, payload?: unknown) => {
+    emit: (event: string, payload?: unknown) => {
       if (payload === undefined) {
         socket.emit(event);
         return;
diff --git a/apps/client/src/scenes/game/entities/map/GameMapController.ts b/apps/client/src/scenes/game/entities/map/GameMapController.ts
index 6213174..da2d52c 100644
--- a/apps/client/src/scenes/game/entities/map/GameMapController.ts
+++ b/apps/client/src/scenes/game/entities/map/GameMapController.ts
@@ -3,7 +3,7 @@
  * 外部からのマップ更新入力をModelとViewへ仲介するコントローラー
  * 全体更新と差分更新を統一的に扱い，描画同期を提供する
  */
-import type { gridMapTypes } from '@repo/shared';
+import type { domain } from '@repo/shared';
 import type { Container } from 'pixi.js';
 import { AppearanceResolver } from '@client/scenes/game/application/AppearanceResolver';
 import { GameMapModel } from './GameMapModel';
@@ -29,13 +29,13 @@
   }
 
   /** 全体マップ状態を反映する */
-  public updateMapState(state: gridMapTypes.MapState): void {
+  public updateMapState(state: domain.gridMap.MapState): void {
     this.model.applyMapState(state);
     this.view.renderAll(this.resolveAllCellColors(this.model.getAllTeamIds()));
   }
 
   /** 差分セル更新を反映する */
-  public updateCells(updates: gridMapTypes.CellUpdate[]): void {
+  public updateCells(updates: domain.gridMap.CellUpdate[]): void {
     this.model.applyUpdates(updates);
 
     updates.forEach(({ index }) => {
diff --git a/apps/client/src/scenes/game/entities/map/GameMapModel.ts b/apps/client/src/scenes/game/entities/map/GameMapModel.ts
index 75b490e..886bdbb 100644
--- a/apps/client/src/scenes/game/entities/map/GameMapModel.ts
+++ b/apps/client/src/scenes/game/entities/map/GameMapModel.ts
@@ -4,7 +4,7 @@
  * 全体更新と差分更新を適用して描画入力用の状態を保持する
  */
 import { config } from '@client/config';
-import type { gridMapTypes } from '@repo/shared';
+import type { domain } from '@repo/shared';
 
 /** マップセル状態の計算責務を担うモデル */
 export class GameMapModel {
@@ -17,7 +17,7 @@
   }
 
   /** 全体マップ状態を適用する */
-  public applyMapState(state: gridMapTypes.MapState): void {
+  public applyMapState(state: domain.gridMap.MapState): void {
     const maxLength = Math.min(this.cellTeamIds.length, state.gridColors.length);
     for (let index = 0; index < maxLength; index++) {
       this.cellTeamIds[index] = state.gridColors[index];
@@ -25,7 +25,7 @@
   }
 
   /** 差分セル更新を適用する */
-  public applyUpdates(updates: gridMapTypes.CellUpdate[]): void {
+  public applyUpdates(updates: domain.gridMap.CellUpdate[]): void {
     updates.forEach(({ index, teamId }) => {
       if (!this.isValidIndex(index)) return;
       this.cellTeamIds[index] = teamId;
diff --git a/apps/client/src/scenes/game/entities/player/PlayerController.ts b/apps/client/src/scenes/game/entities/player/PlayerController.ts
index 3543d25..46367a8 100644
--- a/apps/client/src/scenes/game/entities/player/PlayerController.ts
+++ b/apps/client/src/scenes/game/entities/player/PlayerController.ts
@@ -3,7 +3,7 @@
  * 外部入出力とModel/Viewの橋渡しを担うコントローラー群
  * ローカル入力適用，リモート更新適用，描画同期を分離して扱う
  */
-import type { playerTypes } from "@repo/shared";
+import type { domain } from "@repo/shared";
 import { config } from "@client/config";
 import { AppearanceResolver } from "@client/scenes/game/application/AppearanceResolver";
 import { BombHitBlinkRenderer } from "@client/scenes/game/entities/bomb/BombHitBlinkRenderer";
@@ -18,7 +18,7 @@
 };
 
 /** リモート移動更新を表す型 */
-export type RemoteUpdate = Partial<playerTypes.MovePayload>;
+export type RemoteUpdate = Partial<domain.player.MovePayload>;
 
 /**
  * ローカル用コントローラーとリモート用コントローラーの共通基底
@@ -30,7 +30,7 @@
 
   /** 共通初期化としてModelとViewを生成する */
   protected constructor(
-    data: playerTypes.PlayerData,
+    data: domain.player.PlayerData,
     isLocal: boolean,
     appearanceResolver: AppearanceResolver,
   ) {
@@ -57,12 +57,12 @@
   }
 
   /** 現在座標を取得する */
-  public getPosition(): playerTypes.MovePayload {
+  public getPosition(): domain.player.MovePayload {
     return this.model.getPosition();
   }
 
   /** 外部送信用スナップショットを取得する */
-  public getSnapshot(): playerTypes.PlayerData {
+  public getSnapshot(): domain.player.PlayerData {
     return this.model.getSnapshot();
   }
 
@@ -82,7 +82,7 @@
 export class LocalPlayerController extends BasePlayerController {
   /** ローカルプレイヤー用コントローラーを初期化する */
   constructor(
-    data: playerTypes.PlayerData,
+    data: domain.player.PlayerData,
     appearanceResolver: AppearanceResolver,
   ) {
     super(data, true, appearanceResolver);
@@ -104,7 +104,7 @@
 export class RemotePlayerController extends BasePlayerController {
   /** リモートプレイヤー用コントローラーを初期化する */
   constructor(
-    data: playerTypes.PlayerData,
+    data: domain.player.PlayerData,
     appearanceResolver: AppearanceResolver,
   ) {
     super(data, false, appearanceResolver);
diff --git a/apps/client/src/scenes/game/entities/player/PlayerModel.ts b/apps/client/src/scenes/game/entities/player/PlayerModel.ts
index 1e2882f..7a17553 100644
--- a/apps/client/src/scenes/game/entities/player/PlayerModel.ts
+++ b/apps/client/src/scenes/game/entities/player/PlayerModel.ts
@@ -4,7 +4,7 @@
  * ローカル移動，リモート目標座標，送信スナップショットを管理する
  */
 import { config } from "@client/config";
-import type { playerTypes } from "@repo/shared";
+import type { domain } from "@repo/shared";
 
 /** プレイヤーの座標計算と補間計算を管理するモデル */
 export class PlayerModel {
@@ -18,7 +18,7 @@
   private targetGridY: number;
 
   /** 共有プレイヤー情報から初期状態を構築する */
-  constructor(data: playerTypes.PlayerData) {
+  constructor(data: domain.player.PlayerData) {
     this.id = data.id;
     this.name = data.name;
     this.teamId = data.teamId;
@@ -29,12 +29,12 @@
   }
 
   /** 現在座標を取得する */
-  public getPosition(): playerTypes.MovePayload {
+  public getPosition(): domain.player.MovePayload {
     return { x: this.gridX, y: this.gridY };
   }
 
   /** 送信用スナップショットを取得する */
-  public getSnapshot(): playerTypes.PlayerData {
+  public getSnapshot(): domain.player.PlayerData {
     return {
       id: this.id,
       name: this.name,
@@ -64,7 +64,7 @@
   }
 
   /** リモート更新の目標座標を設定する */
-  public setRemoteTarget(update: Partial<playerTypes.MovePayload>): void {
+  public setRemoteTarget(update: Partial<domain.player.MovePayload>): void {
     if (update.x !== undefined && this.isFiniteNumber(update.x))
       this.targetGridX = update.x;
     if (update.y !== undefined && this.isFiniteNumber(update.y))
diff --git a/apps/client/src/scenes/lobby/LobbyScene.tsx b/apps/client/src/scenes/lobby/LobbyScene.tsx
index 12ae64a..9683229 100644
--- a/apps/client/src/scenes/lobby/LobbyScene.tsx
+++ b/apps/client/src/scenes/lobby/LobbyScene.tsx
@@ -1,8 +1,8 @@
 import { useEffect, useMemo, useState } from "react";
-import type { roomTypes } from "@repo/shared";
+import type { domain } from "@repo/shared";
 
 type Props = {
-  room: roomTypes.Room | null;
+  room: domain.room.Room | null;
   myId: string | null;
   onStart: (targetPlayerCount: number) => void;
   onBackToTitle: () => void;
@@ -278,7 +278,7 @@
                 paddingRight: "10px",
               }}
             >
-              {room.players.map((p: roomTypes.RoomMember) => (
+              {room.players.map((p: domain.room.RoomMember) => (
                 <li
                   key={p.id}
                   style={{
diff --git a/apps/client/src/scenes/title/TitleScene.tsx b/apps/client/src/scenes/title/TitleScene.tsx
index 6f8a114..f0b5f18 100644
--- a/apps/client/src/scenes/title/TitleScene.tsx
+++ b/apps/client/src/scenes/title/TitleScene.tsx
@@ -1,10 +1,10 @@
 import { useState } from "react";
 // ルーム参加時送信ペイロード型
-import type { roomTypes } from "@repo/shared";
+import type { domain } from "@repo/shared";
 
 type Props = {
   // 入室実行時呼び出しコールバック
-  onJoin: (payload: roomTypes.JoinRoomPayload) => void;
+  onJoin: (payload: domain.room.JoinRoomPayload) => void;
   // 入室失敗時の表示メッセージ
   joinErrorMessage: string | null;
   // 入室リクエスト送信中フラグ
diff --git a/apps/server/src/domains/game/GameManager.ts b/apps/server/src/domains/game/GameManager.ts
index fa7b906..ce01adc 100644
--- a/apps/server/src/domains/game/GameManager.ts
+++ b/apps/server/src/domains/game/GameManager.ts
@@ -3,7 +3,7 @@
  * ゲームセッション集合の生成，更新，参照管理を統括する
  */
 import type {
-  gameTypes,
+  domain,
   GameResultPayload,
   PlaceBombPayload,
 } from "@repo/shared";
@@ -61,7 +61,7 @@
   startRoomSession(
     playerIds: string[],
     playerNamesById: Record<string, string>,
-    onTick: (data: gameTypes.TickData) => void,
+    onTick: (data: domain.game.TickData) => void,
     onGameEnd: (payload: GameResultPayload) => void,
     onBotPlaceBomb?: (ownerId: string, payload: PlaceBombPayload) => void,
   ) {
diff --git a/apps/server/src/domains/game/application/ports/gameUseCasePorts.ts b/apps/server/src/domains/game/application/ports/gameUseCasePorts.ts
index a6a84fa..73819f0 100644
--- a/apps/server/src/domains/game/application/ports/gameUseCasePorts.ts
+++ b/apps/server/src/domains/game/application/ports/gameUseCasePorts.ts
@@ -7,10 +7,8 @@
   BombPlacedAckPayload,
   BombPlacedPayload,
   PlayerDeadPayload,
-  gameTypes,
-  playerTypes,
+  domain,
   PlaceBombPayload,
-  roomTypes,
   CurrentPlayersPayload,
   GameResultPayload,
   GameStartPayload,
@@ -25,7 +23,7 @@
   startRoomSession(
     playerIds: string[],
     playerNamesById: Record<string, string>,
-    onTick: (data: gameTypes.TickData) => void,
+    onTick: (data: domain.game.TickData) => void,
     onGameEnd: (payload: GameResultPayload) => void,
     onBotPlaceBomb?: (ownerId: string, payload: PlaceBombPayload) => void,
   ): void;
@@ -34,7 +32,7 @@
 
 /** 準備完了ユースケースが利用するゲーム状態参照入力ポート */
 export interface ReadyForGamePort {
-  getRoomPlayers(): playerTypes.PlayerData[];
+  getRoomPlayers(): domain.player.PlayerData[];
   getRoomStartTime(): number | undefined;
 }
 
@@ -56,22 +54,22 @@
     players: UpdatePlayersPayload,
   ): void;
   publishMapCellUpdatesToRoom(
-    roomId: roomTypes.Room["roomId"],
+    roomId: domain.room.Room["roomId"],
     cellUpdates: UpdateMapCellsPayload,
   ): void;
-  publishGameEndToRoom(roomId: roomTypes.Room["roomId"]): void;
+  publishGameEndToRoom(roomId: domain.room.Room["roomId"]): void;
   publishGameResultToRoom(
-    roomId: roomTypes.Room["roomId"],
+    roomId: domain.room.Room["roomId"],
     payload: GameResultPayload,
   ): void;
   publishGameStartToRoom(
-    roomId: roomTypes.Room["roomId"],
+    roomId: domain.room.Room["roomId"],
     payload: GameStartPayload,
   ): void;
   publishCurrentPlayersToSocket(players: CurrentPlayersPayload): void;
   publishGameStartToSocket(payload: GameStartPayload): void;
   publishPlayerRemovedToRoom(
-    roomId: roomTypes.Room["roomId"],
+    roomId: domain.room.Room["roomId"],
     removedPlayerId: RemovePlayerPayload,
   ): void;
 }
@@ -79,7 +77,7 @@
 /** 爆弾ユースケースが利用する送信出力ポート */
 export interface BombOutputPort {
   publishBombPlacedToOthersInRoom(
-    roomId: roomTypes.Room["roomId"],
+    roomId: domain.room.Room["roomId"],
     ownerSocketId: string,
     payload: BombPlacedPayload,
   ): void;
@@ -88,7 +86,7 @@
     payload: BombPlacedAckPayload,
   ): void;
   publishPlayerDeadToOthersInRoom(
-    roomId: roomTypes.Room["roomId"],
+    roomId: domain.room.Room["roomId"],
     deadPlayerId: string,
     payload: PlayerDeadPayload,
   ): void;
diff --git a/apps/server/src/domains/game/application/services/GameRoomSession.ts b/apps/server/src/domains/game/application/services/GameRoomSession.ts
index c932481..abbd935 100644
--- a/apps/server/src/domains/game/application/services/GameRoomSession.ts
+++ b/apps/server/src/domains/game/application/services/GameRoomSession.ts
@@ -8,7 +8,7 @@
   logResults,
   logScopes,
 } from "@server/logging/index";
-import type { gameTypes, GameResultPayload } from "@repo/shared";
+import type { domain, GameResultPayload } from "@repo/shared";
 import { config } from "@server/config";
 import { GameLoop } from "../../loop/GameLoop";
 import { Player } from "../../entities/player/Player.js";
@@ -57,7 +57,7 @@
 
   public start(
     tickRate: number,
-    onTick: (data: gameTypes.TickData) => void,
+    onTick: (data: domain.game.TickData) => void,
     onGameEnd: (payload: GameResultPayload) => void,
     onBotPlaceBomb?: (ownerId: string, payload: PlaceBombPayload) => void,
   ): void {
diff --git a/apps/server/src/domains/game/application/services/GameSessionLifecycleService.ts b/apps/server/src/domains/game/application/services/GameSessionLifecycleService.ts
index a8e0da7..e5d05ec 100644
--- a/apps/server/src/domains/game/application/services/GameSessionLifecycleService.ts
+++ b/apps/server/src/domains/game/application/services/GameSessionLifecycleService.ts
@@ -4,7 +4,7 @@
  */
 import { config } from "@server/config";
 import type {
-  gameTypes,
+  domain,
   GameResultPayload,
   PlaceBombPayload,
 } from "@repo/shared";
@@ -64,7 +64,7 @@
   public startRoomSession(
     playerIds: string[],
     playerNamesById: Record<string, string>,
-    onTick: (data: gameTypes.TickData) => void,
+    onTick: (data: domain.game.TickData) => void,
     onGameEnd: (payload: GameResultPayload) => void,
     onBotPlaceBomb?: (ownerId: string, payload: PlaceBombPayload) => void,
   ) {
diff --git a/apps/server/src/domains/game/application/useCases/movePlayerUseCase.ts b/apps/server/src/domains/game/application/useCases/movePlayerUseCase.ts
index 400b1ae..0243dca 100644
--- a/apps/server/src/domains/game/application/useCases/movePlayerUseCase.ts
+++ b/apps/server/src/domains/game/application/useCases/movePlayerUseCase.ts
@@ -2,13 +2,13 @@
  * movePlayerUseCase
  * プレイヤー移動入力を受け取り，ゲーム管理へ反映する
  */
-import type { playerTypes } from "@repo/shared";
+import type { domain } from "@repo/shared";
 import type { MovePlayerPort } from "../ports/gameUseCasePorts";
 
 type MovePlayerUseCaseParams = {
   gameManager: MovePlayerPort;
   playerId: string;
-  move: playerTypes.MovePayload;
+  move: domain.player.MovePayload;
 };
 
 /** プレイヤー移動入力をゲーム管理へ委譲する */
diff --git a/apps/server/src/domains/game/entities/map/MapStore.ts b/apps/server/src/domains/game/entities/map/MapStore.ts
index f116f44..5e019ee 100644
--- a/apps/server/src/domains/game/entities/map/MapStore.ts
+++ b/apps/server/src/domains/game/entities/map/MapStore.ts
@@ -2,7 +2,7 @@
  * MapStore
  * 塗り状態グリッドと差分更新キューを保持して提供する
  */
-import type { gridMapTypes } from "@repo/shared";
+import type { domain } from "@repo/shared";
 import { createInitialGridColors } from "./mapGrid.js";
 import { paintCellIfChanged } from "./mapPainting.js";
 import { drainPendingUpdates } from "./mapUpdates.js";
@@ -12,7 +12,7 @@
   // 全マスの現在の色（teamId）を保持
   private gridColors: number[];
   // 次回の送信ループで送る差分リスト
-  private pendingUpdates: gridMapTypes.CellUpdate[];
+  private pendingUpdates: domain.gridMap.CellUpdate[];
 
   constructor() {
     // 初期状態は -1 (無色) などで初期化
@@ -35,7 +35,7 @@
   /**
     * 溜まっている差分を取得し，キューをクリアする（ループ送信時に使用）
    */
-  public getAndClearUpdates(): gridMapTypes.CellUpdate[] {
+  public getAndClearUpdates(): domain.gridMap.CellUpdate[] {
     return drainPendingUpdates(this.pendingUpdates);
   }
 
diff --git a/apps/server/src/domains/game/entities/map/mapPainting.ts b/apps/server/src/domains/game/entities/map/mapPainting.ts
index 8ffe9fb..d1916d7 100644
--- a/apps/server/src/domains/game/entities/map/mapPainting.ts
+++ b/apps/server/src/domains/game/entities/map/mapPainting.ts
@@ -2,11 +2,11 @@
  * mapPainting
  * マップセルの塗り更新と差分追加処理を提供する
  */
-import type { gridMapTypes } from "@repo/shared";
+import type { domain } from "@repo/shared";
 
 type PaintCellParams = {
   gridColors: number[];
-  pendingUpdates: gridMapTypes.CellUpdate[];
+  pendingUpdates: domain.gridMap.CellUpdate[];
   index: number;
   teamId: number;
 };
diff --git a/apps/server/src/domains/game/entities/map/mapUpdates.ts b/apps/server/src/domains/game/entities/map/mapUpdates.ts
index 9c51618..79eed8e 100644
--- a/apps/server/src/domains/game/entities/map/mapUpdates.ts
+++ b/apps/server/src/domains/game/entities/map/mapUpdates.ts
@@ -2,12 +2,12 @@
  * mapUpdates
  * マップ差分キューの取り出しとクリア処理を提供する
  */
-import type { gridMapTypes } from "@repo/shared";
+import type { domain } from "@repo/shared";
 
 /** 差分キューを配列として返却し，キューを空にする */
 export const drainPendingUpdates = (
-  pendingUpdates: gridMapTypes.CellUpdate[]
-): gridMapTypes.CellUpdate[] => {
+  pendingUpdates: domain.gridMap.CellUpdate[]
+): domain.gridMap.CellUpdate[] => {
   const updates = [...pendingUpdates];
   pendingUpdates.length = 0;
   return updates;
diff --git a/apps/server/src/domains/game/entities/player/Player.ts b/apps/server/src/domains/game/entities/player/Player.ts
index fc4daa5..89b3278 100644
--- a/apps/server/src/domains/game/entities/player/Player.ts
+++ b/apps/server/src/domains/game/entities/player/Player.ts
@@ -2,10 +2,9 @@
  * Player
  * サーバー側で保持するプレイヤー状態モデルを定義する
  */
-import type { playerTypes } from "@repo/shared";
-// configのimportは不要になります
+import type { domain } from "@repo/shared";
 
-export class Player implements playerTypes.PlayerData {
+export class Player implements domain.player.PlayerData {
   public id: string;
   public name: string;
   public x: number = 0;
diff --git a/apps/server/src/domains/game/entities/player/playerPosition.ts b/apps/server/src/domains/game/entities/player/playerPosition.ts
index 0a2112c..700b0da 100644
--- a/apps/server/src/domains/game/entities/player/playerPosition.ts
+++ b/apps/server/src/domains/game/entities/player/playerPosition.ts
@@ -2,10 +2,10 @@
  * playerPosition
  * プレイヤー座標からマップ上のセル位置を解決する
  */
-import { gridMapLogic } from "@repo/shared";
+import { domain } from "@repo/shared";
 import { Player } from "./Player.js";
 
 /** プレイヤー座標に対応するグリッドインデックスを返す */
 export const getPlayerGridIndex = (player: Player): number | null => {
-  return gridMapLogic.getGridIndexFromPosition(player.x, player.y);
+  return domain.gridMap.getGridIndexFromPosition(player.x, player.y);
 };
diff --git a/apps/server/src/domains/game/loop/GameLoop.ts b/apps/server/src/domains/game/loop/GameLoop.ts
index 339c05d..7497a75 100644
--- a/apps/server/src/domains/game/loop/GameLoop.ts
+++ b/apps/server/src/domains/game/loop/GameLoop.ts
@@ -6,7 +6,7 @@
 import { MapStore } from "../entities/map/MapStore";
 import { getPlayerGridIndex } from "../entities/player/playerPosition.js";
 import { config } from "@server/config";
-import type { gameTypes, PlaceBombPayload } from "@repo/shared";
+import type { domain, PlaceBombPayload } from "@repo/shared";
 import { logEvent } from "@server/logging/logger";
 import {
   gameDomainLogEvents,
@@ -25,7 +25,7 @@
   private endMonotonicTimeMs: number = 0;
   private nextTickAtMs: number = 0;
   private readonly maxCatchUpTicks: number = 3;
-  private lastSentPlayers: Map<string, gameTypes.PlayerPositionUpdate> =
+  private lastSentPlayers: Map<string, domain.game.PlayerPositionUpdate> =
     new Map();
   private botAiService: BotAiService = new BotAiService();
 
@@ -34,7 +34,7 @@
     private tickRate: number,
     private players: Map<string, Player>,
     private mapStore: MapStore,
-    private onTick: (data: gameTypes.TickData) => void,
+    private onTick: (data: domain.game.TickData) => void,
     private onGameEnd: () => void,
     private onBotPlaceBomb?: (
       ownerId: string,
@@ -143,7 +143,7 @@
     });
   }
 
-  private buildTickData(): gameTypes.TickData {
+  private buildTickData(): domain.game.TickData {
     const activePlayerIds = new Set<string>();
     const playerUpdates = this.collectChangedPlayerUpdates(activePlayerIds);
     this.cleanupInactivePlayerSnapshots(activePlayerIds);
@@ -156,8 +156,8 @@
 
   private collectChangedPlayerUpdates(
     activePlayerIds: Set<string>,
-  ): gameTypes.TickData["playerUpdates"] {
-    const changedPlayers: gameTypes.TickData["playerUpdates"] = [];
+  ): domain.game.TickData["playerUpdates"] {
+    const changedPlayers: domain.game.TickData["playerUpdates"] = [];
 
     this.players.forEach((player) => {
       activePlayerIds.add(player.id);
@@ -167,7 +167,7 @@
       }
 
       // 送信用のプレイヤーデータを構築
-      const playerData: gameTypes.PlayerPositionUpdate = {
+      const playerData: domain.game.PlayerPositionUpdate = {
         id: player.id,
         x: player.x,
         y: player.y,
diff --git a/apps/server/src/domains/room/RoomManager.ts b/apps/server/src/domains/room/RoomManager.ts
index fc446c6..72f88b1 100644
--- a/apps/server/src/domains/room/RoomManager.ts
+++ b/apps/server/src/domains/room/RoomManager.ts
@@ -2,7 +2,7 @@
  * RoomManager
  * ルーム状態の保持とルーム操作サービスへの委譲を担うマネージャ
  */
-import type { roomTypes } from "@repo/shared";
+import type { domain } from "@repo/shared";
 import { RoomJoinService } from "./application/services/RoomJoinService";
 import { RoomExitService } from "./application/services/RoomExitService";
 import { RoomPhaseService } from "./application/services/RoomPhaseService";
@@ -15,7 +15,7 @@
 
 /** ルーム操作の公開インターフェースを提供するマネージャ */
 export class RoomManager {
-  private rooms: Map<string, roomTypes.Room> = new Map();
+  private rooms: Map<string, domain.room.Room> = new Map();
   private roomJoinService: RoomJoinService;
   private roomExitService: RoomExitService;
   private roomPhaseService: RoomPhaseService;
@@ -39,17 +39,17 @@
   }
 
   // オーナーIDからルームを取得する
-  public getRoomByOwnerId(ownerId: string): roomTypes.Room | undefined {
+  public getRoomByOwnerId(ownerId: string): domain.room.Room | undefined {
     return this.roomQueryService.getRoomByOwnerId(ownerId);
   }
 
   // ルームIDからルームを取得する
-  public getRoomById(roomId: string): roomTypes.Room | undefined {
+  public getRoomById(roomId: string): domain.room.Room | undefined {
     return this.roomQueryService.getRoomById(roomId);
   }
 
   // プレイヤーIDから所属ルームを取得する
-  public getRoomByPlayerId(playerId: string): roomTypes.Room | undefined {
+  public getRoomByPlayerId(playerId: string): domain.room.Room | undefined {
     return this.roomQueryService.getRoomByPlayerId(playerId);
   }
 
diff --git a/apps/server/src/domains/room/application/ports/roomUseCasePorts.ts b/apps/server/src/domains/room/application/ports/roomUseCasePorts.ts
index d72a13c..afd0961 100644
--- a/apps/server/src/domains/room/application/ports/roomUseCasePorts.ts
+++ b/apps/server/src/domains/room/application/ports/roomUseCasePorts.ts
@@ -2,7 +2,7 @@
  * roomUseCasePorts
  * ルームユースケースが依存する操作ポートを定義する
  */
-import type { roomTypes } from "@repo/shared";
+import type { domain } from "@repo/shared";
 import type {
   BombHitReportValidationPort,
   BombPlacementPort,
@@ -23,14 +23,14 @@
 
 /** ルーム参加処理の実行結果 */
 export type JoinRoomResult = {
-  room: roomTypes.Room;
+  room: domain.room.Room;
   status: "joined" | "duplicate" | "full";
 };
 
 /** ルームユースケースが利用する出力ポート */
 export interface RoomOutputPort {
-  publishRoomUpdateToRoom(roomId: roomTypes.Room["roomId"], room: roomTypes.Room): void;
-  publishJoinRejectedToSocket(payload: roomTypes.JoinRoomRejectedPayload): void;
+  publishRoomUpdateToRoom(roomId: domain.room.Room["roomId"], room: domain.room.Room): void;
+  publishJoinRejectedToSocket(payload: domain.room.JoinRoomRejectedPayload): void;
 }
 
 /** ルーム参加ユースケースが利用する参加操作ポート */
@@ -45,18 +45,18 @@
 
 /** 退出処理で更新対象となったルーム情報 */
 export type RoomDisconnectResult = {
-  updatedRooms: roomTypes.Room[];
+  updatedRooms: domain.room.Room[];
   deletedRoomIds: string[];
 };
 
 /** 切断調停で利用するプレイヤー所属ルーム参照ポート */
 export interface FindRoomByPlayerPort {
-  getRoomByPlayerId(playerId: string): roomTypes.Room | undefined;
+  getRoomByPlayerId(playerId: string): domain.room.Room | undefined;
 }
 
 /** ゲーム開始調停で利用するオーナー所属ルーム参照ポート */
 export interface FindRoomByOwnerPort {
-  getRoomByOwnerId(ownerId: string): roomTypes.Room | undefined;
+  getRoomByOwnerId(ownerId: string): domain.room.Room | undefined;
 }
 
 /** ゲーム開始調停で利用するルーム状態遷移ポート */
@@ -68,12 +68,12 @@
 /** ルーム状態遷移の実行結果 */
 export type RoomPhaseTransitionResult = {
   status: "updated" | "not_found" | "invalid_transition";
-  room?: roomTypes.Room;
+  room?: domain.room.Room;
 };
 
 /** ルームIDでの存在確認に利用する参照ポート */
 export interface FindRoomByIdPort {
-  getRoomById(roomId: string): roomTypes.Room | undefined;
+  getRoomById(roomId: string): domain.room.Room | undefined;
 }
 
 /** ルーム参加後にゲームランタイムを確保する操作ポート */
diff --git a/apps/server/src/domains/room/application/services/RoomExitService.ts b/apps/server/src/domains/room/application/services/RoomExitService.ts
index 1c54f38..434cfeb 100644
--- a/apps/server/src/domains/room/application/services/RoomExitService.ts
+++ b/apps/server/src/domains/room/application/services/RoomExitService.ts
@@ -2,17 +2,17 @@
  * RoomExitService
  * ルーム退出処理とオーナー移譲処理を担うサービス
  */
-import type { roomTypes } from "@repo/shared";
+import type { domain } from "@repo/shared";
 import type { RoomDisconnectResult } from "../ports/roomUseCasePorts";
 import { logEvent } from "@server/logging/logger";
 import { logResults, logScopes, roomDomainLogEvents } from "@server/logging/index";
 
 /** 退出要求に応じてプレイヤー削除とルーム整理を行うサービス */
 export class RoomExitService {
-  constructor(private rooms: Map<string, roomTypes.Room>) {}
+  constructor(private rooms: Map<string, domain.room.Room>) {}
 
   public removePlayer(socketId: string): RoomDisconnectResult {
-    const updatedRooms: roomTypes.Room[] = [];
+    const updatedRooms: domain.room.Room[] = [];
     const deletedRoomIds: string[] = [];
 
     for (const [roomId, room] of this.rooms.entries()) {
diff --git a/apps/server/src/domains/room/application/services/RoomQueryService.ts b/apps/server/src/domains/room/application/services/RoomQueryService.ts
index 6881df8..3e65a6f 100644
--- a/apps/server/src/domains/room/application/services/RoomQueryService.ts
+++ b/apps/server/src/domains/room/application/services/RoomQueryService.ts
@@ -2,17 +2,17 @@
  * RoomQueryService
  * ルーム状態の参照系クエリを提供するサービス
  */
-import type { roomTypes } from "@repo/shared";
+import type { domain } from "@repo/shared";
 
 /** ルームの参照クエリを提供するサービス */
 export class RoomQueryService {
-  constructor(private rooms: Map<string, roomTypes.Room>) {}
+  constructor(private rooms: Map<string, domain.room.Room>) {}
 
-  public getRoomById(roomId: string): roomTypes.Room | undefined {
+  public getRoomById(roomId: string): domain.room.Room | undefined {
     return this.rooms.get(roomId);
   }
 
-  public getRoomByPlayerId(playerId: string): roomTypes.Room | undefined {
+  public getRoomByPlayerId(playerId: string): domain.room.Room | undefined {
     for (const room of this.rooms.values()) {
       if (room.players.some((player) => player.id === playerId)) {
         return room;
@@ -22,7 +22,7 @@
     return undefined;
   }
 
-  public getRoomByOwnerId(ownerId: string): roomTypes.Room | undefined {
+  public getRoomByOwnerId(ownerId: string): domain.room.Room | undefined {
     for (const room of this.rooms.values()) {
       if (room.ownerId === ownerId) {
         return room;
diff --git a/apps/server/src/domains/room/application/useCases/joinRoomUseCase.ts b/apps/server/src/domains/room/application/useCases/joinRoomUseCase.ts
index f83aa9b..b1f216d 100644
--- a/apps/server/src/domains/room/application/useCases/joinRoomUseCase.ts
+++ b/apps/server/src/domains/room/application/useCases/joinRoomUseCase.ts
@@ -2,7 +2,7 @@
  * joinRoomUseCase
  * ルーム参加要求を処理し，状態更新を配信するユースケース
  */
-import type { roomTypes } from "@repo/shared";
+import type { domain } from "@repo/shared";
 import type {
   EnsureGameRuntimePort,
   JoinRoomPort,
@@ -16,7 +16,7 @@
   roomManager: JoinRoomPort;
   runtimeRegistry: EnsureGameRuntimePort;
   socketId: string;
-  data: roomTypes.JoinRoomPayload;
+  data: domain.room.JoinRoomPayload;
   output: Pick<RoomOutputPort, "publishJoinRejectedToSocket">;
 };
 
diff --git a/apps/server/src/network/handlers/game/createGameOutputAdapter.ts b/apps/server/src/network/handlers/game/createGameOutputAdapter.ts
index f8cac06..6e3945c 100644
--- a/apps/server/src/network/handlers/game/createGameOutputAdapter.ts
+++ b/apps/server/src/network/handlers/game/createGameOutputAdapter.ts
@@ -7,11 +7,11 @@
 import type {
   BombPlacedAckPayload,
   BombPlacedPayload,
+  domain,
   GameStartPayload,
   GameResultPayload,
   PlayerDeadPayload,
   PongPayload,
-  roomTypes,
   CurrentPlayersPayload,
   RemovePlayerPayload,
   UpdateMapCellsPayload,
@@ -25,7 +25,7 @@
 import { createEmitToRoom } from "@server/network/adapters/socketEmitters";
 import type { CommonHandlerContext } from "../CommonHandler";
 
-type RoomId = roomTypes.Room["roomId"];
+type RoomId = domain.room.Room["roomId"];
 
 /** ゲーム出力アダプターのインターフェース */
 export type GameOutputAdapter = Omit<GameOutputPort, "publishPlayerRemovedToRoom"> & BombOutputPort;
diff --git a/apps/server/src/network/handlers/game/gameEventOrchestrators.ts b/apps/server/src/network/handlers/game/gameEventOrchestrators.ts
index ac74bf6..2f5c26a 100644
--- a/apps/server/src/network/handlers/game/gameEventOrchestrators.ts
+++ b/apps/server/src/network/handlers/game/gameEventOrchestrators.ts
@@ -4,7 +4,7 @@
  * 受信ハンドラからユースケース実行責務を分離する
  * ランタイム未解決時はNetworkスコープでignored_missing_roomを記録する
  */
-import { contracts as protocol, type BombHitReportPayload, type PingPayload, type PlaceBombPayload, type playerTypes } from "@repo/shared";
+import { contracts as protocol, type BombHitReportPayload, type PingPayload, type PlaceBombPayload, type domain } from "@repo/shared";
 import { readyForGameCoordinator } from "@server/application/coordinators/readyForGameCoordinator";
 import { startGameCoordinator } from "@server/application/coordinators/startGameCoordinator";
 import { movePlayerUseCase } from "@server/domains/game/application/useCases/movePlayerUseCase";
@@ -84,7 +84,7 @@
 /** MOVEイベントを調停して移動ユースケースを実行する */
 export const handleMoveEvent = (
   deps: GameEventOrchestratorDeps,
-  move: playerTypes.MovePayload,
+  move: domain.player.MovePayload,
 ): void => {
   const resolved = runWithRuntimeByPlayerId(
     deps.roomManager,
diff --git a/apps/server/src/network/handlers/room/createRoomOutputAdapter.ts b/apps/server/src/network/handlers/room/createRoomOutputAdapter.ts
index 00610cd..eebc6f1 100644
--- a/apps/server/src/network/handlers/room/createRoomOutputAdapter.ts
+++ b/apps/server/src/network/handlers/room/createRoomOutputAdapter.ts
@@ -4,13 +4,13 @@
  */
 import { Server } from "socket.io";
 import { contracts as protocol } from "@repo/shared";
-import type { roomTypes } from "@repo/shared";
+import type { domain } from "@repo/shared";
 import type { RoomOutputPort } from "@server/domains/room/application/ports/roomUseCasePorts";
 import { createEmitToRoom } from "@server/network/adapters/socketEmitters";
 import type { CommonHandlerContext } from "../CommonHandler";
 
-type RoomId = roomTypes.Room["roomId"];
-type RoomUpdatePayload = roomTypes.Room;
+type RoomId = domain.room.Room["roomId"];
+type RoomUpdatePayload = domain.room.Room;
 
 /** ルーム出力アダプターのインターフェース */
 export type RoomOutputAdapter = RoomOutputPort;
@@ -23,7 +23,7 @@
     publishRoomUpdateToRoom: (roomId: RoomId, room: RoomUpdatePayload) => {
       common.emitToRoom(roomId, protocol.SocketEvents.ROOM_UPDATE, room);
     },
-    publishJoinRejectedToSocket: (payload: roomTypes.JoinRoomRejectedPayload) => {
+    publishJoinRejectedToSocket: (payload: domain.room.JoinRoomRejectedPayload) => {
       common.emitToSocket(protocol.SocketEvents.ROOM_JOIN_REJECTED, payload);
     },
   };
diff --git a/apps/server/src/network/handlers/room/roomEventOrchestrators.ts b/apps/server/src/network/handlers/room/roomEventOrchestrators.ts
index 3de3c7a..16aa634 100644
--- a/apps/server/src/network/handlers/room/roomEventOrchestrators.ts
+++ b/apps/server/src/network/handlers/room/roomEventOrchestrators.ts
@@ -4,7 +4,7 @@
  * 受信ハンドラからユースケース実行責務を分離する
  * 本ファイルではランタイム未解決ログ対象イベントを扱わない
  */
-import type { roomTypes } from "@repo/shared";
+import type { domain } from "@repo/shared";
 import { joinRoomUseCase } from "@server/domains/room/application/useCases/joinRoomUseCase";
 import { logEvent } from "@server/logging/logger";
 import { logResults, logScopes, roomUseCaseLogEvents } from "@server/logging/index";
@@ -29,7 +29,7 @@
 /** JOIN_ROOMイベントを調停して参加ユースケースを実行する */
 export const handleJoinRoomEvent = async (
   deps: JoinRoomOrchestratorDeps,
-  payload: roomTypes.JoinRoomPayload,
+  payload: domain.room.JoinRoomPayload,
 ): Promise<void> => {
   const joinResult = joinRoomUseCase({
     roomManager: deps.roomManager,
diff --git a/apps/server/src/network/validation/socketPayloadValidators.ts b/apps/server/src/network/validation/socketPayloadValidators.ts
index 7f05d71..39941ea 100644
--- a/apps/server/src/network/validation/socketPayloadValidators.ts
+++ b/apps/server/src/network/validation/socketPayloadValidators.ts
@@ -3,8 +3,7 @@
  * ソケット受信ペイロードの型ガードを提供する
  */
 import type {
-  playerTypes,
-  roomTypes,
+  domain,
   PlaceBombPayload,
   BombHitReportPayload,
 } from "@repo/shared";
@@ -27,7 +26,7 @@
 /** MOVEイベントのペイロードが移動座標であるか判定する */
 export const isMovePayload = (
   value: unknown,
-): value is playerTypes.MovePayload => {
+): value is domain.player.MovePayload => {
   if (typeof value !== "object" || value === null) {
     return false;
   }
@@ -79,7 +78,7 @@
 /** JOIN_ROOMイベントのペイロードが参加情報であるか判定する */
 export const isJoinRoomPayload = (
   value: unknown,
-): value is roomTypes.JoinRoomPayload => {
+): value is domain.room.JoinRoomPayload => {
   if (typeof value !== "object" || value === null) {
     return false;
   }