This is a marvelous ufo game. It can be played on this page . Galactic Missile Defense has been played 3,289 times and has been rated 8.0 / 10 by 46 people. Galactic Missile Defense has been made by Black Sheep Games. Galactic Missile Defense is built with HTML5 to work in all modern browsers. One of the many great things about playing this game on CrazyGames is that you can play it in full-screen mode. The game is available on your computer and as a downloadable app. If you like the game, make sure to also try our other ufo games or UFOz and UFO Rush.