Hammerstorm Slot Review – Lightning Respins Up to 10,000x

by Angelina Vodenicharova, 4 December 2025

Hammerstorm from Pragmatic Play, releasing on 11 December 2025, is a high volatility 5×3 Viking theme slot with 40 paylines and a 96.5% RTP. The lightning money symbols and a roaming collection zone during respins can build hits up to 10,000x your stake.

Hammerstorm is set on 5×3 reels with respins, modifiers, and multipliers.

Hammerstorm in Brief:

• Release Date: 11 December 2025
• Type: Video Slot
• Theme: Viking, Norse
• Software Studio: Pragmatic Play
• RTP: 96.5%
• Hit Frequency: 26.53%
• Bonus Hit Frequency: 5%
• Volatility: High
• Special Features: Wilds, Scatters, Modifiers, Respins
• Bonus Rounds: Respins
• How to Trigger Bonus Round: Scatter plus Wild landing

Hammerstorm is a Viking-themed slot with a unique respins feature, which can be triggered by landing the Wild on reel 1 and lightning anywhere on the reels. I really like the modifiers Double, Expand, and Spins, which make the slot special.

Full Rules & Information About the Hammerstorm Online Slot

The Hammerstorm online slot is a classic video slot with 40 paylines. However, what makes the game unique is the Thor hammers symbol, where if you land it on reel plus a lightning, you’ll unlock respins.

Starting a game is just like every other Pragmatic Play online slot. To begin, click the spin button located at the bottom of the screen. You also have the option to edit your bet size with the plus and minus buttons. To read the rules, press the “i” symbol.

Hammerstorm Symbols & Payouts

The lowest paying Hammerstorm symbols are the playing cards (Jack – Ace). On the other hand, the highest paying symbol is the Wild (Thor’s Hammer), which will pay 50x your bet if you land 5.

Other top-tier symbols in the Hammerstorm slot include the horns, gauntlets, helmets, axes, and shields. Landing 5 of any of these symbols on the reels will net you 1.75x bet.

The unique symbols that show on the reels are the lightning bolts. These come in red, green, or purple and add to the Double, Expand, or Spin chests. At any time, any of these can be triggered. In the base game, lightning symbols double up as multipliers, where you can win up to 10,000x your bet.

Hammerstorm paytable with cards the lowest paying and Viking icons the highest.

• All symbols: 10
• Highest-Paying Symbol: Wild (Thor)
• Wilds: Classic
• Paylines Pay: Left to Right
• Maximum Win: 10,000x

Hammerstorm Bonuses & Features

To trigger the respins feature, you must land the Wild (Thor’s Hammer) on reel 1, while at the same time landing at least one Lightning symbol. What happens next is where the game gets exciting.

The grid expands to 5×5, and to begin, you’ll receive 5 free respins. The game changes as only coins, lightning symbols, and blanks can land.

When you unlock the respins feature, the grid can expand.

As you collect more Lightning symbols, they charge a meter that gradually upgrades the collection zone. It progresses from 3×3 to 4×4 and then 5×5, adding extra respins at each step and allowing the Double, Expand, and Spins modifiers to extend the round truly.

Similar Games & Best Alternatives

If you cannot get enough of Viking-themed slots, then you can enjoy plenty made by big names like NetEnt or Play’n GO. The best alternative to Hammerstorm, in our opinion, is Vikings Fortune Hold and Win, which has an RTP of 96.33%. This game is perfect for players looking for the Hold and Wins feature.

Storm Worth Chasing, Or Not?

If you’re looking for a Norse-themed online slot with an exciting respins feature, then Hammerstorm ticks all the boxes. The lightning features enable you to win up to 10,000 times your bet. However, because the slot is high volatility, you can wait a while for a big hit.