The earth is threatened by an evil genius, the Shadow. Using Eagles 1 to 4, which are an aircraft, flying carrier, spacecraft and submarine, in strategic deployment, you must attempt a Global Rescue.

The screen displays a world map, the status and current position of each Eagle, and the game starts with the first of a series of disasters. A rescue must be made by despatching the appropriate Eagle in time.

The length and complexity of play are determined by fuel supplies of the Eagles, catastophe limit and clue target.

The catastrophe limit, 1 to 10, is the number of current disasters which, if unaverted, will bring the game to an end.

The clue target is the number of rescues, 1 to 99, which must be effected before the lair of the Shadow is revealed. Once this is destroyed, the game is won.

At the start, you have the option of selecting one of four skill levels to automatically determine the parameters of play. Alternatively, you may select them yourself, which gives plenty of difficulty levels to explore.

A well-designed and fully documented game, which makes a refreshing change from zapping aliens.

J.W.