The theme of this game is set in the year 3000, where a lone cyborg (human/machine hybrid) begins in the centre of a large enclosure surrounded by hostile enemies. The task is to destroy the creatures within the enclosure (using an arm pistol) as the enemies approach from all directions.
Once having cleared a wave of dangerous robots, yet another appears but with opponents that move faster, require more hits to be destroyed and mutate, upon being hit into other forms of robots. Each form having a set pattern of movement.
The game begins with the player having three cyborgs at his/her disposal and an additional one for every set of 20,000 points scored.
Each screen has a certain number of enemies of which there are eight different forms. The opponents, on a screen, can be all of the same form or several different forms.
The game requires the use of one or two joysticks. If one joystick is used the cyborg's movement and firing is controlled by the directional movement of the joystick.
If two joysticks are used, then one joystick can be used to control the movement of the cyborg and the other can be used by a second player to fire in any direction regardless of the movements made by the first joystick. This proved to be very useful in tight situations to achieve enormous scores but requires the aid of a second player. As a matter of interest a score of over 2.5 million was reached with about 30 cyborgs remaining after around 150 screens/arenas (after the 99th screen the arena numbers are reset to Zero) when the phone rang and I frantically grabbed the instructions, searching for the key to pause the game but found none.
So, by this some indication can be given as to the addictiveness of the game.