The mystery critic
Anthony Boucher called
Game without Rules the second-best volume of spy short stories ever published, next only to
Somerset Maugham's
Ashenden.
Kirkus Reviews considered the book to be a coup, a "stellar collection of short stories in a very difficult form — episodes and espionage". The reviewer thought the stories to be highly diverting and sometimes touching. The
New York Times Book Review called the stories "entertaining and exciting", and found it hard to say which element was the most effective: the smooth ingenuity of plotting, the disconcerting combination of elegance and harshness, or the shock of amoral realism.
The New Yorker opined that Gilbert "has given us an evening of pure joy in this collection of tales". In a 1984 essay, George N Dove considered that one of the reasons for the lasting popularity of Calder and Behrens was the happy contrast between their outward appearance of elderly, quiet gentility and the pair's ability to take forceful action. == Adaptations ==