Sustain 50 hits and the wake from your ship disappears... the crippled carrier soaks up a few more bombs then submerges beneath the waves. Before that situation is reached, the odds are that you have fended off wave after wave of bombers and their fighter escort. The shells from your two guns can be guided in mid air, which comes in handy for intercepting bombs apart from downing planes.

The screen readouts relate the wave number and the points so far (each shot fired gives a minus score). Effective bomb blasts and general graphical representations allied to good use of colour and special effects; but no cause to rave over the sound, even though there is a snatch of Beethoven.

Genuine skill is needed, along with economy of ammunition, to attain a high score. Suitable for hyperactive blasters with a keen sense of timing.