Helifire (c) 1980 Nintendo.
Take control of a submarine trapped and under heavy fire from helicopters above the water. Shoot as many helicopters as you can while also avoiding their bombs and other underwater hazards. The different colours of helicopter act differently, and get harder as you progress.

>>> TECHNICAL DETAILS
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Main CPU : 8080 (@ 2.016 Mhz)
Sound CPU : I8035 (@ 400 Khz)
Sound Chips : DAC (@ 400 Khz)
Screen orientation : Vertical
Video resolution : 224 x 256 pixels
Screen refresh : 60.00 Hz
Palette colors : 1032
Players : 2
Control : 8-way joystick
Buttons : 1

>>> TRIVIA
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Released in June 1980.

>>> OTHER GAME RESOURCES
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Game's rom.
Machine's picture.