The ZX Spectrum Companion by Bob Maunder is in design similar to many other games books published for the Spectrum. Many attempt to offer both exciting and educational games that make full use of the Spectrum's capabilities and at the same time aim to teach by a proliferation of methods the art of program writing. Boasts that are fulfilled to varying degrees! With Mr Maunder's background as an educationalist, it is natural that his book should lean more to instruction.

The book begins by laying down a 'good programming practice' for designing Spectrum games that takes the reader step by step from conceiving or translating an idea to a final listing. To a beginner, any lessons on program writing by a senior lecturer in Computer Science has got to be worthy of notice. Has he been able to translate his undoubted knowledge effectively to print? Bob Maunder and I both feel that he has. From his early enquiries about what the qualities of a good game are to methods for translating the final ideas into Basic, the description at each methodical stage is detailed and clear.

Crystalising the idea - how the game will start, what the play is expected to do, what will the screen look like; stepwise refinement of the program method and writing the basic program are planned at each stage before approaching the computer - better for getting rid of bugs than D.D.T. Not then too great a surprise to discover that each of the 21 programs are well structured, mindful of memory and an example to all of us of the way programs ought to be written.

To be found with each of the programs is an account of its purpose, an entry of the method used to create it and notes of explanation; indeed each includes an example of the guideline laid down at the beginning of the book.

Where unfortunately the programs have not followed the example of the guidelines has been in observing the qualities of a good game. I found few of the programs in the book to be particularly good ones. Seven categories of games are to be found, number games, word games, board, simulation, dice, card and grid games. None of these, with perhaps the exception of the simulation games, seemed to make much of the scope that the graphics on board the Spectrum provide. While both the sound and graphics were used in nearly all of the games, their effect or application was not terribly impressive and certainly not utilised to their full. The screen images and sounds produced appeared to me to be more of an afterthought used because it was expected, and not integral to the programs themselves.

The essence of many of the games seemed to be number manipulation, like the type which were available on previous generation computers, before the development of user graphics. 'Money Match' is one of this type, based on the American casino game Keno, it requires the player to guess eight numbers from a series of 20, randomly selected between one and 80. The player is given £20 and has to bet this on his choice. The game continues until the player runs out of money or dies of boredom.

In fairness, Sink The Ship, Simon and Dead Ducks are worthy of mention. If the others, the best were those games which had been adapted from favourites such as Blackjack, Solitaire and Concentration; unfortunately they have gained nothing in their translation to computer, and frankly I would rather play the originals anytime.

As a teaching manual on how to write games programs, The Spectrum Games Companion is published by Linsac, written by Bob Maunder and costs £5.95. ISBN 0-907211-02-X.