Like the pioneers of the original wild west (before cowboys and settlers), the intrepid brothers Gerrard have forged ahead into unknown territory and opened the way for us to follow.
Or so that would have us believe. I can't see any but the laziest adventure letting someone else do their exploring.
This book won't be much of a companion unless you happen to be playing The Hobbit, Colossal Cave Adventure, Adventureland or Pirate Adventure, because these are the only adventures covered. However, they are covered in great detail.
Each chapter starts with an alpahbetical list of the 'problems' encountered in each game. The solutions are also given alphabetically rather than chronologically to prevent the reader from simply working straight through the game with the book. Maps are provided in the Appendix for those who are lost or unsure of what lies beyond.
For the four games discussed the subject is well presented and useful. But I certainly won't be spending money on this one.