Venus (c) 1983.

>>> TECHNICAL DETAILS
---------------------
Main CPU : Z80 (@ 3.072 Mhz), M6809 (@ 2 Mhz)
Sound CPU : Z80 (@ 3.579545 Mhz), I8039 (@ 533.333 Khz)
Sound Chips : (5x) AY8910 (@ 1.789772 Mhz), DAC, (6x) RC (@ 1.789772 Mhz)
Screen orientation : Vertical
Video resolution : 224 x 256 pixels
Screen refresh : 60.00 Hz
Palette colors : 32
Players : 2
Control : 8-way joystick
Buttons : 1

>>> TRIVIA
----------
This game is a booleg of 'Gyruss'.

>>> OTHER GAME RESOURCES
---------------------
Game's rom.