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+<!DOCTYPE html>
+<html lang="en">
+<head>
+  <meta charset="UTF-8">
+  <title>Pong</title>
+  <style>
+    * { margin: 0; padding: 0; box-sizing: border-box; }
+    body { background: #111; display: flex; flex-direction: column; align-items: center; justify-content: center; height: 100vh; font-family: monospace; color: #fff; }
+    canvas { border: 2px solid #fff; display: block; }
+    #info { margin-top: 12px; font-size: 14px; color: #aaa; }
+  </style>
+</head>
+<body>
+  <canvas id="c" width="800" height="500"></canvas>
+  <div id="info">W/S — Left Paddle &nbsp;|&nbsp; ↑/↓ — Right Paddle &nbsp;|&nbsp; Space — Pause</div>
+  <script>
+    const canvas = document.getElementById('c');
+    const ctx = canvas.getContext('2d');
+    const W = canvas.width, H = canvas.height;
+
+    const PADDLE_W = 12, PADDLE_H = 90, SPEED = 5, BALL_SIZE = 10;
+
+    const state = {
+      paused: false,
+      scores: [0, 0],
+      left:  { y: H/2 - PADDLE_H/2, dy: 0 },
+      right: { y: H/2 - PADDLE_H/2, dy: 0 },
+      ball:  { x: W/2, y: H/2, dx: 4, dy: 3 },
+    };
+
+    const keys = {};
+    document.addEventListener('keydown', e => {
+      keys[e.key] = true;
+      if (e.key === ' ') { e.preventDefault(); state.paused = !state.paused; }
+    });
+    document.addEventListener('keyup', e => keys[e.key] = false);
+
+    function resetBall(dir = 1) {
+      state.ball = { x: W/2, y: H/2, dx: 4 * dir, dy: (Math.random() * 4 + 2) * (Math.random() < 0.5 ? 1 : -1) };
+    }
+
+    function update() {
+      if (state.paused) return;
+
+      // Paddle movement
+      if (keys['w'] || keys['W']) state.left.y  -= SPEED;
+      if (keys['s'] || keys['S']) state.left.y  += SPEED;
+      if (keys['ArrowUp'])        state.right.y -= SPEED;
+      if (keys['ArrowDown'])      state.right.y += SPEED;
+
+      state.left.y  = Math.max(0, Math.min(H - PADDLE_H, state.left.y));
+      state.right.y = Math.max(0, Math.min(H - PADDLE_H, state.right.y));
+
+      // Ball movement
+      const b = state.ball;
+      b.x += b.dx;
+      b.y += b.dy;
+
+      // Top/bottom bounce
+      if (b.y - BALL_SIZE/2 <= 0)       { b.y = BALL_SIZE/2;       b.dy *= -1; }
+      if (b.y + BALL_SIZE/2 >= H)       { b.y = H - BALL_SIZE/2;   b.dy *= -1; }
+
+      // Left paddle collision
+      if (b.x - BALL_SIZE/2 <= PADDLE_W + 10 &&
+          b.y >= state.left.y && b.y <= state.left.y + PADDLE_H && b.dx < 0) {
+        b.dx *= -1.05;
+        b.dy += (b.y - (state.left.y + PADDLE_H/2)) * 0.1;
+        b.x = PADDLE_W + 10 + BALL_SIZE/2;
+      }
+
+      // Right paddle collision
+      if (b.x + BALL_SIZE/2 >= W - PADDLE_W - 10 &&
+          b.y >= state.right.y && b.y <= state.right.y + PADDLE_H && b.dx > 0) {
+        b.dx *= -1.05;
+        b.dy += (b.y - (state.right.y + PADDLE_H/2)) * 0.1;
+        b.x = W - PADDLE_W - 10 - BALL_SIZE/2;
+      }
+
+      // Cap speed
+      b.dx = Math.max(-12, Math.min(12, b.dx));
+      b.dy = Math.max(-10, Math.min(10, b.dy));
+
+      // Score
+      if (b.x < 0)  { state.scores[1]++; resetBall(1); }
+      if (b.x > W)  { state.scores[0]++; resetBall(-1); }
+    }
+
+    function draw() {
+      ctx.clearRect(0, 0, W, H);
+
+      // Background
+      ctx.fillStyle = '#111';
+      ctx.fillRect(0, 0, W, H);
+
+      // Center line
+      ctx.setLineDash([10, 10]);
+      ctx.strokeStyle = '#333';
+      ctx.lineWidth = 2;
+      ctx.beginPath();
+      ctx.moveTo(W/2, 0);
+      ctx.lineTo(W/2, H);
+      ctx.stroke();
+      ctx.setLineDash([]);
+
+      // Scores
+      ctx.fillStyle = '#fff';
+      ctx.font = 'bold 48px monospace';
+      ctx.textAlign = 'center';
+      ctx.fillText(state.scores[0], W/2 - 80, 60);
+      ctx.fillText(state.scores[1], W/2 + 80, 60);
+
+      // Paddles
+      ctx.fillStyle = '#fff';
+      ctx.beginPath();
+      ctx.roundRect(10, state.left.y, PADDLE_W, PADDLE_H, 4);
+      ctx.fill();
+
+      ctx.beginPath();
+      ctx.roundRect(W - PADDLE_W - 10, state.right.y, PADDLE_W, PADDLE_H, 4);
+      ctx.fill();
+
+      // Ball
+      ctx.beginPath();
+      ctx.arc(state.ball.x, state.ball.y, BALL_SIZE/2, 0, Math.PI * 2);
+      ctx.fill();
+
+      // Pause overlay
+      if (state.paused) {
+        ctx.fillStyle = 'rgba(0,0,0,0.5)';
+        ctx.fillRect(0, 0, W, H);
+        ctx.fillStyle = '#fff';
+        ctx.font = 'bold 36px monospace';
+        ctx.fillText('PAUSED', W/2, H/2);
+      }
+    }
+
+    function loop() {
+      update();
+      draw();
+      requestAnimationFrame(loop);
+    }
+
+    loop();
+  </script>
+</body>
+</html>
