Parallax (1983)

Publisher's blurb The word's out on Parallax. Fast. You better be fast, really fast, to beat those evil Silurians. Watch out! Wave after screaming wave of gravity force fields can tear you apart. Quick! Aim your missiles. Fire! Fire again! You must destroy those oscillating gravitonic generators or else. Oh no... the Silurian orbital launchers are now slamming multiple warheads at you from all sides at once. Don't panic! You're fast... you have to be... to meet all the high-speed challenges of Parallax, the most kinetic game going. Designed by Greg Young