THE ALIENS have invaded earth.
There's only one road left to travel, before
they reach their final goal - total world
domination. Your mission, to halt their advance.
And ultimately destroy their alien stronghold,
'Zone Zero'.
Under your control are five Vortons. And the
'Lasertron' - the world's most advanced
weapon system, which must be taken to Zone
Zero to complete your mission. Fail. And
face the deadly consequences as
the future of earth rests in your hands.
So prepare yourself for battle... Prepare
yourself for the Highway Encounter.