About 12 Bolts of Thunder

While we wouldn’t go as far as to say that 9 Masks of Fire is an iconic slot that redefined the online slots landscape, there is no denying the format has shown long-lasting star power, leading to a slew of knockoffs.

Thunderkick has released their Norse-mythology version of a slot where big wins are formed by landing stacked scatter symbols. This time, they come in the form of Hammers, which deliver truly electrifying wins as long as you land enough of them on the reels.

12 Bolts of Thunder RTP

12 Bolts of Thunder has been released in one RTP setting of 96.15%. When the Bonus Buy feature is used, the Return to Player increases to 96.50%.

Should Thunderkick decide to release other RTP versions of the slot, CasinoWizard will be the first to report.

Update: After extensive research, we found two lower-paying versions of 12 Bolts of Thunder. These average an RTP of 87.19% or 94.12%, so choose your casino wisely by following the CasinoWizards guidance.

Gameplay and features

12 Bolts of Thunder is a slot with a straightforward setup. Played on a 5×4 grid, there are 20 fixed paylines, with a betting range of 0.10 – 100 per spin.

The paytable for the regular symbols plays a secondary part in this slot, as all action is gravitated toward Thor’s magic hammer. A prize of between 2x and 500x the bet is won when four or more hammers appear on the middle three reels.

Other features include:

  • High variance.
  • Wilds substitute all symbols except scatters.
  • Three, four, or five scatters trigger 6, 9, or 12 free spins.
  • Every time a Hammer win occurs during free spins, both the win and a level upgrade are awarded.
  • Each level upgrade awards +3 free spins and increases the Hammer win prize ladder.
  • Up to 5 upgrades can be won.
  • When the free spins bonus ends, the Hammer prize ladder is reset to the starting values.

12 Bolts of ThunderBuy Feature

The Feature Buy is a quick way to gain access to the free spins round, and players may do so by paying 100 times the total bet.

What is the max win on 12 Bolts of Thunder?

You can win up to 30,000x the bet on 12 Bolts of Thunder. It would require you to reach the highest free spins level and land 12 hammer symbols.

CasinoWizard’s verdict: 4 out of 5 stars

If you are a fan of 9 Masks of Fire style slots but are looking for something with a little more oomph (and max win potential!) 12 Bolts of Thunder will be right up your alley.

The free spins level upgrade is a cool feature that doesn’t only award extra free spins but gives players the chance to win bigger amounts of money, too.

Find more high-RTP slots

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Low RTP casinos for 12 Bolts of Thunder
Title: 12 Bolts of Thunder
Provider: Thunderkick
Genre: Video slot
Theme: Mythology
RTP: 87.19% | 94.12% | 96.15%
Volatility: High
Paylines: 20
Minimum bet: 0.10
Maximum bet: 100
Max. win: 30,000x