Battle of Atlantis (bootleg)

Arcade Video game published 43 years ago:

Battle of Atlantis (c) 1981 Game World.

Your mission : Finish the six tables at all costs by eliminating a maximum of opponents. To Do this you possess a multi-directional laser (ultra-rapid firing) and terrifying torpedo-bombs. Through all 6 tables, build up your bonus by blowing-up the fuel tanks.
Table 1: Avoid and destroy the floating mines.
Table 2: The deadly exploding sharks appear as well as the destroyers (avoid their bombs!). Obliterate them with your laser.
Table 3: You penetrate into an abyssal cavern where redoubtable octopuses lie in wait. The destroyers can only drop their bombs through the thin sides of the cavern.
Table 4: A complex of towers replaces the lower part of the cavern. As well as the destroyers and octopus, the mines reappear in large numbers.
Table 5: Accelerated version of Table 4.
Table 6: You return to Table 1 in an accelerated version but you must face up to all your opponents.

- TECHNICAL -

Main CPU : Zilog Z80 (@ 3.072 Mhz)
Sound CPU : Zilog Z80 (@ 1.78975 Mhz)
Sound Chips : (2x) General Instrument AY8910 (@ 1.78975 Mhz)

Screen orientation : Vertical
Video resolution : 224 x 256 pixels
Screen refresh : 60.61 Hz
Palette colors : 99

Players : 2
Control : 8-way joystick
Buttons : 2

- TRIVIA -

Battle of Atlantis was an original game designed and developed by 'Game World', with the software being commissioned to Comsoft, a software company.

Battle of Atlantis was designed to compete with "Scramble", a leading game at the time.

- SCORING -

One second of survival : 10 points.
Missile : 100 points.
Base : 100 points.
Fish : 200 points.
Spider : 200 points.
Surface Ship : 500 points.

- TIPS AND TRICKS -

* Don't stop shooting - a constant stream of bullets and bombs is the best defense!

* If you move up or down while firing, your forward cannon will fire upwards or downwards as well, enabling you to destroy enemies above or below you.

* Destroy surface ships whenever possible as they are worth the most points.

- STAFF -