Gather the Thunderball symbols for a chance to win a jackpot worth 15,000x your bet in Thunderstruck Wild Lightning!
The bet sizes available in Thunderstruck Wild Lightning range from 20p to £16.
Betting in this game is fixed at 40 paylines.
All symbols, except Scatter symbols and Thunderball symbols, can be replaced by Wild symbols in this game.
Any wins formed with the help of a Wild symbols substitution will be multiplied by 2x or 5x.
Wild symbols can be stacked during the main game.
Any Wild symbols that land in a payline combination can form their own wins.
Scatter symbols can form their own wins.
Scatter wins are multiplied by the total bet value.
Any wins involving Scatter symbols are added to regular wins.
Thunderball symbols can land anywhere during the main game.
When these symbols land, they may be blue or gold.
Gold coloured Thunderball symbols may only appear on reels four and five.
Each gold Thunderball symbol is collected in a collection pot shown on-screen - the pot imagery does not influence a jackpot being awarded.
Either cash or jackpots may be awarded by Thunderball symbols.
Changing the bet size during the main game will update the potential cash prizes on offer from a Thunderball symbol.
Thunderball symbols cannot form their own wins.
During the Link&Win™ feature, these symbols can pay.
Six or more Thunderball symbols landing during the main game will trigger the Link&Win feature and award three spins.
Four rows are unlocked to begin with.
The Thunderball symbols used to trigger this feature are locked in place while all other positions spin independently.
Only Thunderball symbols or black positions can land.
Any new Thunderball symbols that land are locked in place for the subsequent spins.
If a Thunderball symbol lands on rows five to eight, then a jackpot prize is awarded.
Cash prizes are awarded if a Thunderball symbol lands elsewhere.
Each time a Thunderball symbol lands, the number of spins left will reset to three.
Landing 15, 20, 25 or 30 Thunderball symbols will unlock rows five, six, seven and eight, respectively.
Filling all reel positions will end the feature.
The feature will also end if there are no more spins remaining.
All prizes achieved in the unlocked rows are awarded at the end of the feature.
The Mega jackpot is awarded when all reel positions are filled with Thunderball symbols.
Free Spins Bonus
There are five modes of free spins available to unlock:
A different number of free spins is awarded for each mode.
|Free Spins Bonus||Number of Triggering Free Spins||Number of Free Spins Awarded||Wild Multiplier Value|
|Jotunheim||1||15||2x, 3x, 5x|
|Vanaheim||5||12||2x, 4x, 6x|
|Alfheim||10||9||3x, 5x, 8x|
|Nidavellir||15||6||5x, 8x, 12x|
If 20 pairs of Scatter symbols land during the main game, the Svartalfheim Free Spins Bonus will unlock.
Once the next selection is triggered, the bonus will play.
One free spin is awarded with the WildStorm feature for activating the Svartalfheim Free Spins Bonus.
A maximum of five reels are transformed into Wild reels.
Wild reels pay as separate symbols.
If just two Scatter symbols appear during a spin, they are added to the Scatter symbol collector.
The collector is refilled if no win is achieved.
At the end of the WildStorm feature, the collector resets.
If three or more Scatter symbols appear, then the number of free spins initially awarded will be re-triggered.
The Svartalfheim Free Spins Bonus cannot be re-triggered.
Free spins use the same bet level as the triggering spin.
Free spins winnings are added to the winnings from the main game.
Wild Lightning Feature
A Wild symbol landing on reels two, three and four during the Free Spins Bonus will activate the Wild Lightning feature.
The position containing the triggering Wild symbol is activated.
If another Wild symbol lands on this active position, then the reels will turn Wild for that spin and the active position is removed.
Wild reels are only active for the triggering spin.
Wild reels pay as separate symbols.
Random positions may be active at the beginning of a Free Spins Bonus.
One, two or three positions may be active at the beginning of the Vanaheim, Alfheim and Nidavellir Free Spins Bonus, respectively.
The Wild Lightning feature cannot be triggered during the Svartalfheim Free Spins Bonus.
Return to Player
Return to Player (RTP): 96.10%
The expected return is the amount we pay out to players relative to the amount of wagering on the game.
For example, if we take £100 of wagers we will, on average, pay out £96.10 of wins.