diff --git a/apps/server/src/domains/game/entities/bom/BombRoomStateStore.ts b/apps/server/src/domains/game/entities/bom/BombRoomStateStore.ts
new file mode 100644
index 0000000..7bae822
--- /dev/null
+++ b/apps/server/src/domains/game/entities/bom/BombRoomStateStore.ts
@@ -0,0 +1,13 @@
+/**
+ * BombRoomStateStore
+ * bomb命名互換のためにbomb実装を再公開する
+ */
+
+/** 爆弾設置イベント配信の重複排除判定関数を再公開する */
+export { shouldBroadcastBombPlaced } from "../bomb/BombRoomStateStore";
+
+/** サーバー採番の爆弾ID生成関数を再公開する */
+export { issueServerBombId } from "../bomb/BombRoomStateStore";
+
+/** ルーム単位の爆弾状態破棄関数を再公開する */
+export { clearBombRoomState } from "../bomb/BombRoomStateStore";
diff --git a/apps/server/src/domains/game/entities/bomb/BombRoomStateStore.ts b/apps/server/src/domains/game/entities/bomb/BombRoomStateStore.ts
new file mode 100644
index 0000000..d305563
--- /dev/null
+++ b/apps/server/src/domains/game/entities/bomb/BombRoomStateStore.ts
@@ -0,0 +1,62 @@
+/**
+ * BombRoomStateStore
+ * ルーム単位の爆弾重複排除状態と採番状態を管理する
+ */
+import { config } from "@repo/shared";
+
+type BombRoomStateClearReason = "game-ended" | "room-deleted";
+
+const roomBombDedupTable = new Map<string, Map<string, number>>();
+const roomBombSerialTable = new Map<string, number>();
+const isBombRoomStateDebugEnabled = process.env.NODE_ENV !== "production";
+
+const cleanupExpiredBombDedup = (roomId: string, nowMs: number) => {
+  const roomTable = roomBombDedupTable.get(roomId);
+  if (!roomTable) return;
+
+  roomTable.forEach((expiresAtMs, dedupeKey) => {
+    if (expiresAtMs <= nowMs) {
+      roomTable.delete(dedupeKey);
+    }
+  });
+
+  if (roomTable.size === 0) {
+    roomBombDedupTable.delete(roomId);
+  }
+};
+
+/** 爆弾設置イベントを配信すべきか判定し，配信時は重複排除状態を更新する */
+export const shouldBroadcastBombPlaced = (roomId: string, dedupeKey: string, nowMs: number): boolean => {
+  cleanupExpiredBombDedup(roomId, nowMs);
+
+  const roomTable = roomBombDedupTable.get(roomId) ?? new Map<string, number>();
+  if (roomTable.has(dedupeKey)) {
+    return false;
+  }
+
+  const ttlMs = config.GAME_CONFIG.BOMB_FUSE_MS + config.GAME_CONFIG.BOMB_DEDUP_EXTRA_TTL_MS;
+  roomTable.set(dedupeKey, nowMs + ttlMs);
+  roomBombDedupTable.set(roomId, roomTable);
+  return true;
+};
+
+/** ルーム単位の連番からサーバー採番の爆弾IDを生成する */
+export const issueServerBombId = (roomId: string): string => {
+  const serial = (roomBombSerialTable.get(roomId) ?? 0) + 1;
+  roomBombSerialTable.set(roomId, serial);
+  return `${roomId}:${serial}`;
+};
+
+/** 指定ルームの爆弾採番状態と重複排除状態を破棄する */
+export const clearBombRoomState = (roomId: string, reason: BombRoomStateClearReason): void => {
+  const hadDedupState = roomBombDedupTable.delete(roomId);
+  const hadSerialState = roomBombSerialTable.delete(roomId);
+
+  if (!isBombRoomStateDebugEnabled) {
+    return;
+  }
+
+  console.debug(
+    `[BombState] cleared room=${roomId} reason=${reason} dedup=${hadDedupState} serial=${hadSerialState}`
+  );
+};
diff --git a/apps/server/src/network/handlers/GameHandler.ts b/apps/server/src/network/handlers/GameHandler.ts
index 891f520..ac3b899 100644
--- a/apps/server/src/network/handlers/GameHandler.ts
+++ b/apps/server/src/network/handlers/GameHandler.ts
@@ -7,4 +7,4 @@
 export { registerGameHandlers } from "./game/registerGameHandlers";
 
 /** ルーム終了時の爆弾状態掃除関数を外部参照向けに再公開 */
-export { clearBombRoomState } from "./game/bombRoomStateStore";
+export { clearBombRoomState } from "@server/domains/game/entities/bomb/BombRoomStateStore";
diff --git a/apps/server/src/network/handlers/game/bombRoomStateStore.ts b/apps/server/src/network/handlers/game/bombRoomStateStore.ts
index 53a96e1..0c34d10 100644
--- a/apps/server/src/network/handlers/game/bombRoomStateStore.ts
+++ b/apps/server/src/network/handlers/game/bombRoomStateStore.ts
@@ -1,62 +1,13 @@
 /**
  * bombRoomStateStore
- * ルーム単位の爆弾重複排除状態と採番状態を管理する
+ * 爆弾状態管理の互換公開口としてdomains実装を再公開する
  */
-import { config } from "@repo/shared";
 
-type BombRoomStateClearReason = "game-ended" | "room-deleted";
+/** 爆弾設置イベント配信の重複排除判定関数を再公開する */
+export { shouldBroadcastBombPlaced } from "@server/domains/game/entities/bomb/BombRoomStateStore";
 
-const roomBombDedupTable = new Map<string, Map<string, number>>();
-const roomBombSerialTable = new Map<string, number>();
-const isBombRoomStateDebugEnabled = process.env.NODE_ENV !== "production";
+/** サーバー採番の爆弾ID生成関数を再公開する */
+export { issueServerBombId } from "@server/domains/game/entities/bomb/BombRoomStateStore";
 
-const cleanupExpiredBombDedup = (roomId: string, nowMs: number) => {
-  const roomTable = roomBombDedupTable.get(roomId);
-  if (!roomTable) return;
-
-  roomTable.forEach((expiresAtMs, dedupeKey) => {
-    if (expiresAtMs <= nowMs) {
-      roomTable.delete(dedupeKey);
-    }
-  });
-
-  if (roomTable.size === 0) {
-    roomBombDedupTable.delete(roomId);
-  }
-};
-
-/** 爆弾設置イベントを配信すべきか判定し，配信時は重複排除状態を更新する */
-export const shouldBroadcastBombPlaced = (roomId: string, dedupeKey: string, nowMs: number): boolean => {
-  cleanupExpiredBombDedup(roomId, nowMs);
-
-  const roomTable = roomBombDedupTable.get(roomId) ?? new Map<string, number>();
-  if (roomTable.has(dedupeKey)) {
-    return false;
-  }
-
-  const ttlMs = config.GAME_CONFIG.BOMB_FUSE_MS + config.GAME_CONFIG.BOMB_DEDUP_EXTRA_TTL_MS;
-  roomTable.set(dedupeKey, nowMs + ttlMs);
-  roomBombDedupTable.set(roomId, roomTable);
-  return true;
-};
-
-/** ルーム単位の連番からサーバー採番の爆弾IDを生成する */
-export const issueServerBombId = (roomId: string): string => {
-  const serial = (roomBombSerialTable.get(roomId) ?? 0) + 1;
-  roomBombSerialTable.set(roomId, serial);
-  return `${roomId}:${serial}`;
-};
-
-/** 指定ルームの爆弾採番状態と重複排除状態を破棄する */
-export const clearBombRoomState = (roomId: string, reason: BombRoomStateClearReason): void => {
-  const hadDedupState = roomBombDedupTable.delete(roomId);
-  const hadSerialState = roomBombSerialTable.delete(roomId);
-
-  if (!isBombRoomStateDebugEnabled) {
-    return;
-  }
-
-  console.debug(
-    `[BombState] cleared room=${roomId} reason=${reason} dedup=${hadDedupState} serial=${hadSerialState}`
-  );
-};
+/** ルーム単位の爆弾状態破棄関数を再公開する */
+export { clearBombRoomState } from "@server/domains/game/entities/bomb/BombRoomStateStore";
diff --git a/apps/server/src/network/handlers/game/registerGameHandlers.ts b/apps/server/src/network/handlers/game/registerGameHandlers.ts
index 89f3d33..75ea885 100644
--- a/apps/server/src/network/handlers/game/registerGameHandlers.ts
+++ b/apps/server/src/network/handlers/game/registerGameHandlers.ts
@@ -19,8 +19,8 @@
 import { isMovePayload, isPingPayload, isPlaceBombPayload } from "@server/network/validation/socketPayloadValidators";
 import { createServerSocketOnBridge } from "@server/network/handlers/socketEventBridge";
 import { createPayloadGuard } from "@server/network/handlers/payloadGuard";
+import { clearBombRoomState, issueServerBombId, shouldBroadcastBombPlaced } from "@server/domains/game/entities/bomb/BombRoomStateStore";
 import { createGameOutputAdapter } from "./createGameOutputAdapter";
-import { clearBombRoomState, issueServerBombId, shouldBroadcastBombPlaced } from "./bombRoomStateStore";
 
 /** ゲーム受信イベントごとの入力検証関数を保持するテーブル */
 const gamePayloadValidators = {