Bally, IGT, and the Companies That Built the Slot Industry

The slot machine in its modern form did not evolve haphazardly. It was engineered by specific companies at specific moments. To understand the slot industry, you must understand the companies that built it.

Bally Manufacturing, founded in 1932, started in pinball. Slot machines came later. By the 1960s, Bally had pivoted entirely to slots. The company understood what other manufacturers did not: the future of gaming was electronic, not mechanical. While competitors still built lever-operated machines, Bally was building electrical systems that could be programmed, networked, and audited.

The Bally 777, released in the 1970s, standardized what a modern slot machine looked like. Seven-segment displays for the reels. Electrical rather than mechanical payout mechanisms. The ability to track performance remotely. Before Bally, every slot machine was an island. After Bally, machines could be monitored from a central location. This was revolutionary for casino operators.

The Consolidation

IGT (International Game Technology) emerged in the 1980s by acquiring failing slot manufacturers and consolidating their technology. Where Bally engineered machines, IGT engineered platforms. IGT bought out Sircoma. They bought out Williams. They bought out everyone.

By the 1990s, IGT owned the market. Their machines were in casinos everywhere. Their software was standard. Their design language was ubiquitous. Walking into a casino in Reno or Las Vegas meant seeing primarily IGT machines, with scattered Bally cabinets for old-timers who had not upgraded.

Bally and IGT competed, but their competition was not head-to-head. Bally controlled the Las Vegas luxury market. IGT dominated the regional casinos and riverboats. Both were printing money.

The 2000s brought consolidation and privatization. IGT went private in 2006 under a leveraged buyout. Bally changed hands multiple times. Eventually, both companies faced pressure from software-driven competitors like Aristocrat and Konami, which offered game libraries that could be updated digitally rather than requiring new cabinet purchases.

The Design Legacy

Both companies understood something essential: the machine was not about the game. The machine was about the player. The cabinet design, the button placement, the sound design, the color palette, all of it was engineered to keep a player at the machine.

Bally machines in the 1980s had a distinctive click-clack of the stepper mechanism. The sound was not accidental. It was designed to create a sense of mechanical integrity, even though the mechanism itself was being replaced by electronics. Players trusted machines that sounded substantial.

IGT machines were designed differently. Quieter. More elegant. The design signaled that IGT machines were modern, technical, efficient. Bally machines signaled durability and tradition. Both strategies worked because they appealed to different player types.

The companies that build casino machines understand that they are not selling games. They are selling hardware that generates loyalty.

The pay-to-play model emerged from both companies. Rather than selling machines outright, they leased them to operators. The casino paid a percentage of revenue. This aligned incentives. The manufacturer made more money when the casino made more money. The relationship was partnership, not vendor-customer.

By the late 1990s, both Bally and IGT had perfected the ecosystem. Standardized game libraries, remote monitoring, networked progressive jackpots, centralized accounting. The modern casino floor was largely their invention.

The advent of online gambling and regulatory shifts in some states forced both companies to diversify. IGT moved into online lottery systems. Bally moved into sports betting platforms. Both attempted to position themselves as gaming companies rather than slot companies.

The consolidation did not end. In 2019, IGT and Bally merged under the GAN banner. In 2021, they parted ways again. The industry could not decide if consolidation created efficiency or if it killed innovation.

What remains constant: the machines on the floor in 2024 owe their basic design to Bally's 1970s innovation and IGT's 1980s refinement. The companies changed. The design language endured. Walk into any casino and you will see that lineage. The lever is gone. The stepper is gone. The philosophy remains: build hardware that holds attention and generates revenue.