Mission ZX is based on the arcade game Blitz, where you play the part of a bomber pilot circling above an enemy city losing both height and fuel, and where your only hope of survival is to accurately bomb the skyscrapers below before you crash into them.

Your controls only allow you to gain height once or to use hyperspace once. Other features include a limited number of missiles to clear your flight path, and a facility to freeze the game temporarily.

There are three levels of play, and on the higher levels, the residents of the city lose their temper and fire back!

My two sons, aged nine and twelve, and several of their friends were happily and quietly entertained for a whole afternoon with Mission ZX and, for the price, that has to be good value

Ian Carroll, who is aged 15, is hoping to make a commercial success of his talents. Mission ZX is a good start, and I wish him well.

D.J.