diff --git a/src/api/room/ApiJoin.ts b/src/api/room/ApiJoin.ts
index 2f0d52a..20d2bc2 100644
--- a/src/api/room/ApiJoin.ts
+++ b/src/api/room/ApiJoin.ts
@@ -14,7 +14,7 @@ export default async function (call: ApiCall<ReqJoin, ResJoin>) {
 		}
 		room.Join(conn);
 		conn.Room = room;
-		call.succ(0);
+		call.succ(room.ConnCount());
 
 		if (room.ConnCount() >= 2) {
 			room.GotoGame();
diff --git a/src/api/room/ApiSendAns.ts b/src/api/room/ApiSendAns.ts
new file mode 100644
index 0000000..a31a7fb
--- /dev/null
+++ b/src/api/room/ApiSendAns.ts
@@ -0,0 +1,12 @@
+import { ApiCall, BaseConnection } from "tsrpc";
+import Room from "../../component/Room/Room";
+import { ReqSendAns, ResSendAns } from "../../shared/protocols/room/PtlSendAns";
+import { ServiceType } from "../../shared/protocols/serviceProto";
+
+export default async function (call: ApiCall<ReqSendAns, ResSendAns>) {
+	const { answer } = call.req;
+	const conn: BaseConnection<ServiceType> = call.conn;
+	const room: Room = conn.Room;
+	const data: boolean = room.SendAns(conn, answer);
+	call.succ(data);
+}
\ No newline at end of file
diff --git a/src/component/Room/Room.ts b/src/component/Room/Room.ts
index c53567b..ae65cb5 100644
--- a/src/component/Room/Room.ts
+++ b/src/component/Room/Room.ts
@@ -4,6 +4,7 @@ import { RandomEx } from "../../Engine/Utils/Number/RandomEx";
 import { EGameState } from "../../shared/protocols/define/enum";
 import { MsgChangeState } from "../../shared/protocols/room/MsgChangeState";
 import { ServiceType } from "../../shared/protocols/serviceProto";
+import { sleep } from "../../utils";
 import { RoomConnData } from "./RoomUtils";
 
 
@@ -67,27 +68,32 @@ export default class Room {
 		server.broadcastMsg("room/GoToGame", 0, <WsConnection<ServiceType>[]>this.conns);
 	}
 
-	/** ChangeState */
+	/**
+	 * ChangeState
+	 * @param needData true就是要帶connData.answer
+	 * @param state 沒帶就是使用connData.state ?? EGameState.Ready
+	 * @param conn 沒帶就是會+apiNum
+	 */
 	public ChangeState(needData: boolean = false, state?: EGameState, conn?: BaseConnection): void {
 		this.connData.forEach((connData: RoomConnData, key: BaseConnection) => {
 			let target: WsConnection<ServiceType>[] = [];
 			let data: MsgChangeState = [];
 			if (conn) {
 				if (state) {
-					target = <WsConnection<ServiceType>[]>this.conns.filter((conn) => conn === key);
+					target = <WsConnection<ServiceType>[]>this.conns.filter((filterConn) => filterConn === key);
 					const apiNum: number = conn === key ? 100 : 200;
 					data = [state + apiNum];
 				} else if (conn) {
-					target = <WsConnection<ServiceType>[]>this.conns.filter((conn) => conn === key);
+					target = <WsConnection<ServiceType>[]>this.conns.filter((filterConn) => filterConn === key);
 					const apiNum: number = conn === key ? 100 : 200;
 					data = [(connData.state ?? EGameState.Ready) + apiNum];
 				}
 			} else {
-				target = <WsConnection<ServiceType>[]>this.conns.filter((conn) => conn === key);
+				target = <WsConnection<ServiceType>[]>this.conns.filter((filterConn) => filterConn === key);
 				data = [connData.state];
 			}
 			if (needData) {
-				data.push(connData.card);
+				data.push(connData.answer);
 			}
 			server.broadcastMsg("room/ChangeState", data, target);
 		});
@@ -105,6 +111,20 @@ export default class Room {
 		}
 	}
 
+	/** SendAns */
+	public SendAns(conn: BaseConnection, answer: number): boolean {
+		const index: number = this.conns.indexOf(conn);
+		const nextIndex: number = (index + 1) % this.conns.length;
+		const nextConn: BaseConnection = this.conns[nextIndex];
+		const nextData: RoomConnData = this.connData.get(nextConn);
+		const nextAns: number = nextData.answer;
+		const data: boolean = nextAns === answer;
+		if (data) {
+			this.GameOver();
+		}
+		return data;
+	}
+
 	//#endregion
 
 	//#region ChangeState
@@ -127,7 +147,7 @@ export default class Room {
 			this.connData.forEach((connData: RoomConnData, key: BaseConnection) => {
 				const card: number = RandomEx.GetInt(0, cardCount);
 				connData.state = key === self.conns[now] ? EGameState.MyTurnCards : EGameState.MyWait;
-				connData.card = card;
+				connData.answer = card;
 				self.connData.set(key, connData);
 			});
 			this.ChangeState(true);
@@ -159,11 +179,17 @@ export default class Room {
 		this.conns.push(conn);
 		const data: RoomConnData = {
 			state: undefined,
-			card: undefined,
+			answer: undefined,
 		};
 		this.connData.set(conn, data);
 	}
 
+	/** GameOver */
+	public async GameOver(): Promise<void> {
+		await sleep(500);
+		this.ChangeState(false, EGameState.GameOver);
+	}
+
 	/** RestartGame */
 	public RestartGame(): void {
 
diff --git a/src/component/Room/RoomUtils.ts b/src/component/Room/RoomUtils.ts
index ee737ae..0f74fd9 100644
--- a/src/component/Room/RoomUtils.ts
+++ b/src/component/Room/RoomUtils.ts
@@ -2,7 +2,7 @@
 
 export interface RoomConnData {
 	state: number
-	card?: number
+	answer?: number
 }
 
 // #endregion
\ No newline at end of file
diff --git a/src/utils/index.ts b/src/utils/index.ts
new file mode 100644
index 0000000..343e0b6
--- /dev/null
+++ b/src/utils/index.ts
@@ -0,0 +1,11 @@
+export function sleep(ms: any): Promise<any> {
+	return new Promise((resolve) => setTimeout(resolve, ms));
+}
+
+export function getArray(count: number): number[] {
+	const array: number[] = [];
+	for (let i: number = 0; i < count; i++) {
+		array.push(i);
+	}
+	return array;
+}
\ No newline at end of file