The player controls a four-man British Special Air Service (SAS) team executing a number of important missions during World War II.

The game features 6 campaigns taking place in Italy, Yugoslavia, Germany, Norway, the North Sea and Czechoslovakia.

"[20] Edge gave the PC version nine out of ten, saying, "Certain aspects of the control system are clunky, and there are occasional graphical anomalies, but Hidden and Dangerous [sic] is such a sweeping success that it dwarfs any criticism.

"[25] Kevin "BIFF" Giacobbi of GameZone similarly gave the Gold Edition seven out of ten, saying that it "has potential - but until more patches are released and the multi-player online issue is solved, the best I would give it is just above average.

A writer for the magazine reported: "The game wasn't so fortunate in the States, where it received warm reviews but endured poor sales — partly because of intense competition from Rainbow Six, a lack of multiplayer options, and relatively little marketing exposure.

This added new soldiers, weapons and missions in new locations including Poland, the Ardennes and postwar Greece.