For the Period 1900 to the Present
From the cover:
"A role-playing game covering syndicates, police, federal agencies, criminal activities, police technology, criminal skills, weapons of all sorts, police techniques, profitability of crimes, corruption of officials, terrorists, police special units, hostage situations, laws, forensic sciences, the F.B.I. and its laboratories, SWAT teams, and inter-gang conflicts.
Included in this box are complete rules for the game of GANGSTER!, a Patrol Guide to fully explain police procedures and the services available to police departments from the F.B.I. laboratories, the laws of the land, sumary charts of the basic tables needed for play, and a sampmle character reference sheet suitable for 'xeroxing'.
Players must provide paper, pencils, a twenty-sided die, three six-sided (normal) dice, and optionally, miniature figures to represent the various characters created in the game. The most important component provided by the players and Gamemaster is Imagination."