Oil has been one of the most attractive substances to drill since the first drilled oil well was completed. Of course, that’s because of it the fortune drillers can make selling it. You see the parallel with online gambling, of course, and you see why oil extraction-themed slots exist. Stakelogic alone has several such titles, like Arizona Diamonds Quattro, Black Gold Megaways and Black Gold 2 Megaways, but so does Plank Gaming with Rich Geyser.
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