The history of the one-armed bandit: from mechanical to digital

The one-armed bandit began as a simple coin-operated machine with spinning reels, fixed symbols and a lever. Players inserted a coin, pulled the handle and waited for the reels to stop. The expression came from that conspicuous lever, although the design has changed almost beyond recognition over more than a century.

Mechanical technology gave way to electromechanical systems, video screens and software-driven games. The physical spinning reels disappeared from many modern versions, yet the language of symbols, jackpots and pressing a button remained. Online casinos and mobile games later carried these familiar features into a global digital market.

For Australian players, the machine is commonly known as a poker machine or, more casually, a pokies. Its history is closely connected with pub and club culture, particularly in New South Wales and Victoria, where gaming rooms remain a familiar part of the local social landscape.

Mechanical roots and the Liberty Bell

The best-known early one-armed bandit was Charles Fey’s Liberty Bell, publicly displayed around 1900. It used three mechanical reels and a single lever, with familiar symbols such as bells, horseshoes, stars and cherries. When the reels stopped, the visible combination was checked against a fixed payout table.

Early machines were largely mechanical, but they were not simple to operate. Each reel carried a predetermined strip of symbols, while springs, brakes and stops controlled the movement. Coins and prizes often had to be handled by an attendant. The machine’s apparent simplicity concealed carefully calibrated odds designed to keep the house profitable over time.

War, prohibition and fruit machines

Twentieth-century restrictions reshaped where and how these machines operated. Prohibition in the United States pushed mechanical gambling devices into clubs and other less regulated venues. In Britain, machines offering small prizes became known as fruit machines, a name reflected in their symbols and their connection with candy and novelty prizes.

The same legal pressure encouraged manufacturers to create machines for entertainment as well as gambling. Some used bells to signal potential wins, while others offered predetermined prizes when a combination appeared. These changes helped establish the visual vocabulary that later digital slots would imitate, including bright symbols, repeating sounds and flashing lights.

Electromechatronics and bigger entertainment

By the 1960s, electromechanical machines combined electric motors with electronic displays, counters and payout mechanisms. Bally’s Money Honey, released in 1963, is often regarded as a landmark because it offered numerous winning combinations and an automated payout system. The reels might still turn, but more of the decision-making moved into the machine’s circuitry.

Australian manufacturers played an important part in this transition. Aristocrat, established in Sydney during the 1950s, became a major producer of electronic poker machines. Local manufacturers adapted the technology to Australian venues, helping turn the once-novel machine into a familiar feature of clubs, hotels and later larger gaming centres.

The Australian rise of pokies and poker machines

In Australia, “pokies” is everyday shorthand for the one-armed bandit or poker machine. These machines became closely associated with registered clubs and licensed hotels, commonly called pubs, as well as Returned Services League clubs. Gaming rooms often sit beside bars, dining areas, bingo rooms and other social facilities, making them part of everyday leisure rather than a separate casino experience.

New South Wales legalised gaming machines in registered clubs in 1958 and permitted them in licensed hotels from 1992. Other states followed different paths, with rules shaped by local gaming markets and political attitudes. South Australia, for instance, applies particularly strict limits on gaming-machine numbers, while other jurisdictions impose different approval, monitoring and taxation requirements.

Australian players developed their own vocabulary around the experience. “Chasing the jackpot” describes continued play while a progressive prize grows, while “feeding the machine” means supplying a succession of bets. These expressions reflect the social language surrounding pokies, even though the underlying technology has changed from metal reels to electronic displays.

Video, internet and mobile play

Video slots began appearing in casinos during the late 1970s and 1980s. Instead of physical reels, a screen displayed animated symbols, while a random number generator determined the result. This allowed developers to create themed games, bonus rounds, expanding ways to win and elaborate sound effects that could not be reproduced by mechanical components.

The internet expanded access during the 1990s, and mobile technology later placed slot games in pockets. Players no longer needed to visit a venue or even carry coins, although regulated Australian venues continued to offer physical machines. That transition is also visible in casino news discussions, where screen-based games are regularly compared with their mechanical ancestors.

Digital development also strengthened the emphasis on testing and certification. Independent laboratories examine random number generators and game mathematics, while detailed pay tables describe the odds and possible returns. Progressive jackpots can now link machines across a venue, a network or an online operator.

Regulation and the machine’s enduring pull

Modern machines combine entertainment software with strict oversight. Australian operators must meet state and territory requirements covering machine approvals, venue standards, player identification and advertising. Federal and state rules also restrict credit arrangements, inducements and misleading promotional claims, reflecting the country’s broader approach to gambling harm.

Some Australian venues now provide cashless or account-based play, allowing a player to use a card rather than continually inserting coins. Availability varies between jurisdictions and venues, but the change shows how the basic machine has evolved. The spinning reel has become a digital outcome, the mechanical lever has become a touchscreen button, and the player’s ritual of anticipation remains remarkably familiar.