The same central server hosts the slot machine jackpot, fed by 100s of different online casinos. In the online space, linking slots is relatively simple. By pooling a tiny percentage of each wager, huge jackpots could be created. In 1986, modern technology enabled IGT to link slot machines to a network, all sharing the same jackpot. Did you know that the world’s first progressive jackpot machine was launched in 1986 by International Game Technology (IGT)? IGT had already earned both fortune and reputation with the invention of the classic video poker game.