Rocket Command

Rocket Command is a clone of the arcade shooter Defender where the player is in control of a craft that flies over the surface of a planet protecting humanoids from the alien forces.

Aliens will swoop down and attempt to grab your humanoids and if they succeed in bringing them to the top of the screen, the humanoid will turn into a mutant that will hunt the player craft down. If you manage to shoot the alien, the humanoid is released and you should catch it with your ship and bring it to the ground. If it is high up and you don't catch it, the human will be killed once it hits the ground. Your craft has a laser cannon and a limited amount of smart bombs that kill every enemy on screen. The landscape scrolls along with movement in horizontal directions until it wraps around, the craft can also move up and down.

If you hit any alien or an alien projectile, then you lose one of three lives, once all lives are spent, it's game over.