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Computer Gamer (Oct, 1986)
The Fourth Protocol comes complete with dossier of information and jargon helpful to spies as well as three one-time pads - a system of codes that you will need to use in order to be able to access files at Blenheim (consult your own telephone file for the number). The game plays superbly. The icons are very easy to use and mean that you don't have to go searching for the right word or phrase and the atmosphere created really gives the feel of a harassed man working desperately against the clock. Highly recommended. P.S. So is the book if you haven't read that yet.
Amstrad Action (Oct, 1986)
It's a very enjoyable and novel game that has plenty of depth. You'll need to; do some hard thinking to get anywhere. Deduction, analysis, a little bit of luck and sudden flashes of inspiration all play their part. It won't be to everyone's taste because it can be quite tough going. But if you're looking for a challenge and a good workout for the brain cells, then this is ideal.