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12 Bolts of Thunder

Get ready for the chance to unleash thunderous wins with the mightiest hammer in the realm. With a spin from just 10p, you could win up to 30,000x your bet! Activate the Hammer Win feature or unlock the bonus game to supercharge your play.



Spin with the power of the gods as you wield the legendary hammer on the reels. Play from just 10p and you could knock out staggering prizes!

Activate the Hammer Win feature and watch as the reels get a taste of divine chaos. Unlock the bonus game and dive into a realm of Free Spins that could make your wins skyrocket up to 30,000x your bet!

Fancy taking a swing? Play 12 Bolts of Thunder online.

If you’re looking for more electrifying titles, then check out our other online slots.

How To Play

Hammer Win

A Hammer win is awarded when 4 or more (up to a maximum of 12) Hammer symbols appear on reels 2, 3, or 4. The size of the win is dependent on the number of Hammer symbols in accordance with the Hammer Paytable. For example, in the main game 6 Hammer symbols will award a payout equal to the current bet multiplied by 10.

In the main game, the multiplier levels in the Hammer Paytable are (2X, 5X, 10X, 15X, 20X, 50X, 100X, 500X, and 1,000X).

Wild Symbol

The Wild symbol substitutes for all other symbols except the Bonus and Hammer symbols.

Bonus Game

3 or more Bonus symbols trigger the Bonus Game consisting of Free Spins. The amount of awarded Free Spins depends on the number of Bonus symbols, according to the pay table.

Hammer wins during Bonus Game will upgrade each multiplier level on the Hammer Paytable after payouts. Maximum number of upgrades in bonus are 5. The highest multiplier is 30,000X for 12 hammer symbols at the highest level. See Hammer Paytable for more details. The Bonus Game awards 3 extra Free Spins for each Hammer win.

For information on symbols and base game instructions, please see in-game help menu.

Game Information

  • Min stake: 10p
  • Max stake: £5
  • Max payout: £150,000
  • Jackpot: No
  • Paylines: 20
  • RTP: 94.12%
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