Galaxy Defender is a game that is similar to space invaders. If you can remember, this was another popular arcade game where you had to shoot down rows of space invaders who seemed to come closer every time they make a turn. After every turn the space invaders moved faster and it was really difficult to get to them on time. This was even more challenging as you cleared them from the game, because they became smaller targets moving much faster. The aim of the game is to avoid the invaders from getting to your base. In the original game, the initial levels started with the invaders also shooting down at you, and this made it very hard for you to shoot them since you also had to avoid their bombs and missiles. Occasionally, the mother ship would fly across the sky, and you would get a bonus if you managed to shoot it down. This game has been very popular and it requires quick reflexes. Once the invaders start shooting at you, you must find a way of shooting while on the move, hitting your target and not get shot. The game allows you 3 lives and you may be added extra lives when you reach certain milestones. Each of the smaller ships will earn you 10 points when you shoot them down, but shooting the mother ship will add you 100 points; this is the reason why you should rush to shoot it down whenever it appears in the sky. It is a red ship which moves from one end of the screen and disappears on the other, unless you can shoot it down. The online version may be a little simpler than the arcade version, so here is your chance to get back at the pesky invaders who gave you such a hard time when you played at the arcade.