Use your Mouse To Move The Rocket. Now Use Space Bar Or Click To Fire At Enemies. If The Enemies Collides With The Edge Or The Rocket, Your Game Is Over! Every Time You Kill An Enemy, The Score Counter Increments. Its A Very Easy Game, To Make, But Hard To Play. You Can Also Play This On Mobile Phones. This Is The Source Code For My YouTube Tutorial Of A Space Shooter Game On Scratch. Enjoy!