Obtaining one to cash symbol grows one of many jackpots, when you’re dos-5 symbols improve one or two jackpots. Getting six-15 otherwise bucks symbols grows dos-step three otherwise 3-cuatro jackpots, respectively. Microgaming generated Thunderstruck, Thunderstruck II, and Thunderstruck Insane Lightning inside the 2004, 2010 and you can 2021.

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