In Blockade Runner, you control a blockade ring (a circle of inverse asterisks) which is depleted each time the runner (a 'O') tries to break through. The object is to rotate the ring to block the runner and prevent it escaping through the spaces.

If the last blockader on the ring in sunk before the runner escapes, new rings are set up, and it is possible to build up a high score.

There are ten speeds of play, the fastest requiring very quick reaction times indeed. A record of the current score, and the highest score so far, is kept.

This is a competent machine code game which works well. However, it is not particularly sophisticated and I feel a few other games on the cassette are really necessary to provide more interest and make it a worthwhile buy. As it stands with just the one game, it seems rather overpriced.

Blockade Runner costs £3.95 from Paul Gillet, 30 Cromwel Way, Kidlington, Oxford.