diff --git a/index.html b/index.html
new file mode 100644
index 0000000..085c2b7
--- /dev/null
+++ b/index.html
@@ -0,0 +1,47 @@
+<!DOCTYPE html>
+<html lang="en">
+  <head>
+    <meta charset="UTF-8" />
+    <meta http-equiv="X-UA-Compatible" content="IE=edge" />
+    <meta name="viewport" content="width=device-width, initial-scale=1.0" />
+    <link rel="stylesheet icon" href="data:" type="image/x-icon" />
+    <title>陆战棋游戏</title>
+    <style>
+      button {
+        padding: 0.5rem;
+        color: lightgray;
+        cursor: pointer;
+      }
+
+      .player1 {
+        color: black;
+      }
+
+      .player2 {
+        color: red;
+      }
+    </style>
+  </head>
+  <body>
+    <h1>陆战棋游戏</h1>
+    <h2 id="role"></h2>
+    <button id="gameButton">玩家1</button>
+    <script src="/socket.io/socket.io.min.js"></script>
+    <script>
+      const client = io();
+
+      client.on("role", (name) => {
+        role.innerText = name;
+      });
+
+      client.on("player", (plaayer) => {
+        gamepadButton.classList = plaayer;
+        gamepadButton.classList = plaayer == "player" ? "玩家1" : "玩家2";
+      });
+
+      gamepadButton.onclick = () => {
+        client.emit("click");
+      };
+    </script>
+  </body>
+</html>
diff --git a/server.js b/server.js
new file mode 100644
index 0000000..1e3f608
--- /dev/null
+++ b/server.js
@@ -0,0 +1,40 @@
+const express = require('express')
+const app = express()
+app.use(express.static('public'))
+const host = process.env.HOST || '0.0.0.0'
+const port = process.env.PORT || 8000
+const server = app.listen(port, host, () => console.log(`陆战棋游戏运行在:http://${host}:${port}/`))
+const io = require('socket.io')(server)
+
+const clients = []
+let currentPlayer = null
+
+io.on('connection', (client) => {
+    // 来人了
+    clients.push(client)
+
+    const i = clients.indexOf(client)
+    if (i == 0) client.emit('role', '玩家1')
+    else if (i == 1) client.emit('role', '玩家2')
+    else client.emit('role', '旁观者')
+
+    if (clients.length == 2) {
+        currentPlayer = client[0]
+    } else {
+        currentPlayer = null
+    }
+    io.emit('player', clients.length < 2 || currentPlayer != clients[1] ? 'player1' : 'player2')
+})
+
+client.on('click', () => {
+    if (clients.length >= 2 && client == currentPlayer) {
+        // 切换玩家
+        if (currentPlayer === clients[0]) {
+            currentPlayer = clients[1]
+            io.emit('player', 'player2')
+        } else {
+            currentPlayer = clients[0]
+            io.emit('player', 'player1')
+        }
+    }
+})
\ No newline at end of file
