Looking for a later game in this series?
This review covers the original Thunderstruck. Explore Thunderstruck II for a later game in the same series. Availability depends on the casino and your location.
Read our Thunderstruck II review SourceThunderstruck is a Microgaming slot. This guide explains the features and selected awards visible in its original game screens, with references you can enlarge to inspect the rules.
Thunderstruck screenshots
Original game imagery from our sister site KeyToCasinos. Screens and displayed rules checked on 6 October 2026. These are historical interfaces; operator branding and older controls do not establish current availability.
How Thunderstruck works
This is the original nine-line Thunderstruck, rather than its sequel. Thor substitutes for ordinary symbols and doubles a win when acting as a wild, but does not replace ram scatters. Three or more ram scatters start 15 Free Spins with tripled wins, and another qualifying trigger can award 15 more spins during the feature. Ordinary wins run left to right, with only the highest win per selected line paid.
These provider listings do not confirm that Thunderstruck is currently offered. Check the exact game and access from your location with the operator.
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Rules and payout examples
The examples below were checked against the original screens above. They are selected conditions, not a complete paytable or a promise about a current release.
| Combination or feature | Award or rule shown |
|---|---|
| 2 ram scatters | 2× total credits staked |
| 3 ram scatters | 5× total credits staked plus 15 Free Spins |
| 4 ram scatters | 20× total credits staked plus 15 Free Spins |
| 5 ram scatters | 500× total credits staked plus 15 Free Spins |
Read the award unit and any bet-setting condition together. Free spins count game rounds; a win multiplier applies to the specified win; a displayed paytable number is not automatically a multiple of the full spin stake. The exact in-game help governs how line bets, coin value and feature modifiers combine.
Edition and availability
This reference covers Thunderstruck, not a sequel or another provider’s similarly named game. The historical interface may show controls or stake settings that are no longer offered. It does not verify a current RTP, operating limit or maximum cash prize. Consult the version you are using for those details.
Frequently asked questions
Is this Thunderstruck II?
No. These screenshots and rules document the original nine-line Thunderstruck.
What does Thor do as a wild?
He substitutes for ordinary symbols and doubles the qualifying win, excluding ram scatters from substitution.
Can the 15 Free Spins retrigger?
Yes. The original paytable permits another 15-spin award during the feature.
What does the reference table show for “5 ram scatters”?
500× total credits staked plus 15 Free Spins. This applies to the pictured edition and the setting specified in the table.
Is Thunderstruck available at every listed casino?
No. Screenshots document the original edition. Check the exact title in the operator’s current library, then read its own help for current limits, payout settings and location restrictions.
