Defender II: 1981
Developer: Vid Kidz
Genre: Shooter
Defender II Game Manual

The player flies a small spaceship above a long, mountainous landscape. The land is inhabited by a small number of humanoids. The landscape wraps around, so flying constantly in one direction will eventually bring the player back to their starting point. The players ship can fly through the landscape without being destroyed.

A number of enemy ships fly over the landscape. The player’s responsibilities are to destroy all Landers and protect the humans from being captured

The player is armed with a beam-like weapon which can be fired rapidly in a long horizontal line ahead of the spaceship, and also has a limited supply of smart bombs, which can destroy every enemy on the screen. The player also has a limited supply of “Inviso” cloaking energy, which makes the ship invisible, and able to destroy any ships it comes in contact with.

At the top of the screen is a radar-like scanner, which displays the positions of all aliens and humans on the landscape