Update index.html

index.html

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     <meta charset="UTF-8" />
     <meta name="viewport" content="width=device-width, initial-scale=1.0" />
     <meta name="author" content="Akhilesh Yadav">
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+    <meta name="description" content="Alien Invasion Defense - A thrilling game where you defend Earth from alien invaders with power-ups like health boosts, shields, and speed boosts. Join the ultimate gaming experience!">
+    <meta name="keywords" content="Alien Invasion Defense, alien shooter game, arcade game, defense game, space invaders, alien attack, online gaming, power-ups, gaming experience">
+    <meta name="robots" content="index, follow">
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+    <meta property="og:title" content="Alien Invasion Defense - Protect Earth from Alien Invaders!">
+    <meta property="og:description" content="Defend Earth against waves of alien invaders in this action-packed game. Utilize power-ups and upgrade your defenses to survive!">
+<!--     <meta property="og:image" content="https://alienid.netlify.app//og-image.jpg">
+    <meta property="og:url" content="https://alienid.netlify.app/alien-invasion-defense"> -->
+    <meta property="og:type" content="website">
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+    <meta name="twitter:title" content="Alien Invasion Defense - Protect Earth from Alien Invaders!">
+    <meta name="twitter:description" content="Defend Earth against waves of alien invaders in this action-packed game. Use power-ups and strategies to survive!">
+<!--     <meta name="twitter:image" content="https://alienid.netlify.app/twitter-image.jpg"> -->
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     <link rel="icon" href="favicon.png" type="image/x-icon">
     <title>Alien Invasion Defense</title>
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