The technicians at the control center supervise all the casino’s slot machines via computer. Tanaka.When you hit a big jackpot at a Las Vegas casino, the first thing that will happen is that the casino boss is going to call a technician from the control center. The unnamed player walked away with $10.1 million after placing the small bet. What’s even more staggering is that the unnamed tourist won the sum on a notoriously tricky slot machine. Deciding to stop and have a bit of a flutter, the player's $5 gamble turned into a $10.1 million jackpot.