This book contains many of the secrets used in the Acornsoft games, in fact most of the procedures are a straight copy from Philosopher's Quest. Topics include how to write 'Hack and Slash' games, a full-size Roman-style adventure, a chapter on Databases and all the procedures needed to create your own games.
I give this book four stars for the clear and amusing style, but I deduct one as some Demon Editor failed to notice that part of the program listing on page 133 has not been printed. Luckily the corrupted lines are used elsewhere in the book (page 127), so all is not lost. However, I hurled a few of my more dreadful curses before finding those!
Having earned my supper by solving that problem I highly recommend the book as essential reading by all fans. The infections enthusiasm of the author is so strong it is bound to inspire any troll to write his own game. Trouble is, if all wizards give away secrets like Peter, this dungeon is going to get pretty crowded!