Skramble

"Skramble“ is a typical example of the many clones of the arcade classic “Scramble” – even the name is among the most common for such copies. You pilot your spaceship through a cave system divided into six sections. Pressing the joystick button fires both your front-mounted gun and bombs simultaneously. Missiles will launch into your path to intercept you – you must shoot them down and bomb every fuel tank you see, or you'll run out of fuel. The second cave introduces aliens moving vertically in your flight path. In the third section, you'll face fireballs that are immune to your bullets.