Zektor, the Video Game by Sega Enterprises, Ltd. [Tokyo, Japan]

Type of the machine : Video Game
Zektor © 08/1982 Sega.

Zektor is a one or two player game that tasks you with the liberation of eight cities that have been seized by the evil cadre of alien robots. In order to liberate a city, you must defeat 3 attack waves of fighters and robo-probes. Fighters and Robo-probes are often shielded (in red), and each consecutive hit reduces the enemies shield strength, until, when the shield drops, a hit will destroy it. In addition, you will encounter three types of Moboids :
* Green Moboids spin the players ship on contact, and bounce enemy ships.
* Blue Moboids bounce all ships.
* Red Moboids destroy all un-shielded ships (including the players ship).

After defeating three attack waves, the Alien Robot holding that city will reappear within rotating protective rings, through which a 'slot shot' neutralizes that Robot, awarding the player a bonus ship and advancement to the next round.

Sega G80 Vector hardware

Main CPU : Z80 (@ 4 Mhz), I8035 (@ 208 Khz)
Sound Chips : Discrete circuitry, AY8910 (@ 2 Mhz), SP0250 (@ 3.12 Mhz)

Screen orientation : Horizontal
Video resolution : 224 x 256 pixels
Screen refresh : 40.00 Hz
Palette colors : 256

Players : 1
Control : dial
Buttons : 2

The last alien is the alien from 1981's "Space Fury".

Each round consists of the three attack waves (sub-rounds), which are scored as follows for each enemy ship destroyed :

Rounds 1 & 2
Sub-round 1 : 200 points.
Sub-round 2 : 400 points.
Sub-round 3 : 800 points.

Rounds 3 & 4
Sub-round 1 : 400 points.
Sub-round 2 : 800 points.
Sub-round 3 : 1600 points.

Rounds 5 & 6
Sub-round 1 : 600 points.
Sub-round 2 : 1200 points.
Sub-round 3 : 2400 points.

Rounds 7 & 8
Sub-round 1 : 800 points.
Sub-round 2 : 1600 points.
Sub-round 3 : 3200 points.

A Tip : when fighting in 'the city', try to stay in the upper left-hand corner. The city boss will not shoot you there.

Consoles :

Sony PlayStation 2 (2006, "Sega Genesis Collection")

Game's rom.
Machine's picture.