A slot machine (American English), known variously as a fruit machine (British English), puggy (Scottish English), the slots (Canadian English and American English), poker machine/pokies (Australian English and New Zealand English), fruities (British English) or slots (American English), is a gambling machine that creates a game of chance for its customers. Slot machines are also known. Reel type slot machines have a number of spaces and stops on each reel that contain either a symbol or blank. These are refereed to as the physical stops. Most of the old mechanical machines had reels that could hold 20 symbols while the modern slots have reels with 22 physical stops.
1990s: The Online Revolution
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WMS Industries Inc. had been hovering around the slot machine industry for a few years, but by the 1990s they had grasped the video slot revolution by the horns.
WMS developed its first video slot with a second screen bonus. Reel 'Em In featured a fishing theme where players were able to trigger a Pick'em style bonus game. It paved the way for second screen bonuses like free spins for years to come.

A speedier and cheaper internet allowed online gambling manufacturers to start developing slots that could be played at home. Microgaming had already been operating an online casino since 1994 but launched Cash Splash in 1998, one of the world's first ever online progressive jackpot slots.

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As broadband speeds and operating systems improved, the number of developers grew. Major players like NetEnt, Playtech, and Play'n GO all started up operations in the 1990s and continue to innovate and expand. Online games became slicker and became available to play through both download clients and via web browsers.