Bally Manufacturing started as a pinball company in 1932. By the 1970s, they had invented the modern electronic slot machine. Their dominance shaped every casino floor in America.
Bally's Origins
Bally was founded by Ray Moloney in Chicago. The first product was a pinball machine called Ballyhoo. The pinball market exploded in the 1930s. Bars and restaurants across America had pinball machines. The manufacturers made money from machine sales and operators kept the revenue from coins.
Bally dominated the pinball industry in the 1950s and 1960s. But pinball was dying. Video games were replacing mechanical games. By the 1970s, Bally knew it needed to move into casinos or decline.
In 1963, Bally created the first fully electronic slot machine, called Money Honey.
The Electronic Slot Machine
In 1963, Bally created the first fully electronic slot machine, called Money Honey. It was revolutionary. Previous slots were mechanical. A player pulled a lever. Spinning drums inside the cabinet gradually slowed and stopped on symbols. The entire process took three to five seconds.
Money Honey used an electric motor and solenoid. The player pressed a button instead of pulling a lever. The spinning happened instantly. The entire game cycle took less than one second. And Money Honey included a coin hopper that automatically paid out winnings. No casino cashier was needed.
Money Honey was a breakthrough. Casinos adopted it immediately. By the 1980s, Bally's electronic slots were on every casino floor in America.
IGT's Entry
International Game Technology (IGT) was founded in 1975 by Nolan Bushnell (the co-founder of Atari) and three others. IGT focused on casino slot software and systems integration. While Bally built the hardware, IGT built the brains.
IGT created the Video Poker machine in the 1970s. This was a slot machine with a video screen showing five playing cards. The player could draw and discard cards like in poker. Video poker became the most popular casino game in some markets.
IGT grew by acquisition. They bought other slot manufacturers, other gaming companies. By the 1990s, IGT was the largest gaming manufacturer in the world, surpassing Bally.
International Game Technology (IGT) was founded in 1975 by Nolan Bushnell (the co-founder of Atari) and three others.
The Competition
Bally and IGT were not the only competitors. Konami, the Japanese company, made slot machines. WMS (Williams Manufacturing) made slots. Aristocrat, an Australian company, made slots. Novomatic and Barcrest made slots in Europe.
But Bally and IGT controlled the US market. Their dominance meant that the design standards they set became the industry standard. The button-and-screen interface that Bally invented is still the standard on modern slots.
Why This Matters
Slot machines are not just machines. They are the product of decades of design choices made by Bally and IGT engineers. The speed of play, the visual presentation, the sound design, the bonus games. All of these were innovations by these companies.
When a modern online casino offers slot games, many of the most popular are games originally designed by Bally or IGT. Cleopatra (IGT), Blazing 7s (Bally), Double Diamond (IGT). These are legacy games now available on every platform.
The House Edge Design
Bally and IGT did not just invent the hardware. They invented the business model. Early slots had house edges of 5 to 15 percent. Modern slots operate at 2 to 6 percent on average. This margin is the result of careful calibration by engineers.
When a casino operator buys a slot machine from a manufacturer, they negotiate the payout percentage. Higher payout means more player returns, which is more attractive to players. Lower payout means more profit for the casino. A typical negotiation might be 94 to 96 percent RTP (meaning 4 to 6 percent house edge).
Bally and IGT designed the machines to hit these targets precisely. The RNG and the paytable are balanced so that over millions of spins, the return matches the promised percentage.
Modern Era
Bally and IGT still exist. Bally filed for bankruptcy in 2014 and emerged under new ownership. IGT merged with GTECH in 2014 to form International Game Technology. Both companies still manufacture physical slot machines for casinos.
For online casinos, Bally and IGT license their games to online platform providers. When you play a Bally or IGT game online, you are playing a game designed in the 1980s or 1990s, adapted for the modern interface.
The Behavioral Innovation
Bally and IGT did not just innovate mechanically. They innovated behaviorally. They studied how players interact with machines. They learned that faster play leads to higher spending. They learned that near-miss effects (almost winning) encourage continued play. They learned that bright lights and loud sounds increase engagement.
All of these insights were incorporated into the machines. A modern slot machine is not just engineered for fairness and profit. It is engineered for engagement and retention.
The Lasting Impact
When you sit at a modern slot machine in a casino or on your phone, you are using technology invented by engineers at Bally in the 1970s and refined by IGT in the 1980s and 1990s. The basic experience has not changed dramatically. Button press, spinning reels, win or loss.
What has changed is the sophistication of the psychology embedded in that experience. Bally and IGT started the business of understanding how to make machines that keep players playing.