The Software and Design of Slot Machines

University of Waterloo (Canada) computer game design researcher Kevin Harrigan, whose research has made headlines around the world, recently testified before the New Hampshire Gambling Study Commission to explain the software and design features of slot machines. Through Canada’s Freedom of Information Act, Dr. Harrigan obtained slot machine design documents, called PAR Sheets. Slot machine manufacturers commissioned an army of lawyers but failed to block Dr. Harrigan’s access to this information. Without losses disguised as wins and frequent near win displays, slot machines would not be profitable.

Harrigan presentation to the 2010 NH Gambling Commission

LesThe Software and Design of Slot Machines