Navigate a path through a stream of meteors to one of the three landing pads; rescue two stranded VIPs; return to the mothership, avoiding or blasting the space rocks once more; then do it all again.
Now on to stage two, just the same but with more debris to contend with. As you develop some skill, more interest in the game is generated - but never enough to keep you glued to the TV with no thought for the morrow. The purple meteors, which incidentally flow two ways, could have exhibited varying forms. Come to that, why stick to just one colour? The sonics are of the type we have all come to take for granted but would miss if absent.