PC Pachi-Slot Idol Gambler

Arcade game, a simulation of "One-armed bandit" machine. It turns out that you can hold competitions on this game..... To win, you apparently have to go to your local arcade and ask around for the professionals. They don't play, but stand and watch, counting the number of times the knob is pulled. At a certain point, they take over the machine, win an ene sum, and walk away again. Learn.