Play Hammerstorm for Free

The reels sit within an idyllic setting of mountains, colorful wooden houses, and the golden palace of Asgard in the background. Symbols include a range of classic Norse trinkets such as curved horns, the helmet, decorative shield, and the elaborate ax, with high card icons rounding out the reels.

Thor, the God of Thunder can make an appearance, and a spectacular animated version of the character announces the bonus rounds, in a bombastic style. It’s a good-looking example of a game themed around Norse mythology and you can play the Hammerstorm slot online at our favorite casinos with Pragmatic Play games.

You can play with stakes from just 0.20 all the way up to a generous 240.00, winning these portions of the bet as symbols match from the left over any of 40 paylines –

It’s a high volatility game with a return to players of 96.5%, which is an exciting mix that can lead to big wins on any spin. Play Hammerstorm for free on this page to see how it works, or why not explore the biggest collection of free online slots across this site?

As well as paying by far the highest prizes, Mjölnir, the legendary Hammer of Thor is wild, with the power to act as other paid symbols when possible.

Look above the reels of the Hammerstorm slot machine and you find three wooden chests marked Double, Expand, and Spins. Red, green, and purple bolts of lightning can strike the reels at any time, collecting in the matching chests above to trigger respins at random times. Land the ghostly image of Thor on the left reel at the same time as a lightning bolt and the respective respins trigger automatically.

Whichever way the round triggers, you get five respins played out on a 5x5 grid, where only coins, or lightning bolts can land. Each holds a random value of 0.5x, 1x, 1.5x, 2x, 2.5x, 3x, 4x, 5x, 6x, 8x, 10x, 12x, 12.5x, 20x, 37.5x, 50x, 100x, 250x, 625x, or a huge 10,000x the total stake.

Thor takes up a 2x2 section of the grid, and at the start of the feature he moves around collecting the combined values of any triggering lighting bolts. Reels then respin as Thor moves across the grid gathering in any coin and lighting money symbols landing in his zone. Lighting also builds in a meter and on the fifth bolt, the zone increases to 3x3, then 4x4 once you collect three more. Gather three more bolts of lighting and the mighty Thor takes up a 5x5 block, making it increasingly easy for him to collect money symbols.

It's a fantastic Hammerstorm online slot bonus feature with extra respins awarded each time the zone grows. It gets even more exciting though, as depending on which chests triggered the round you get modifiers throughout.

The red Double feature sees gold coins or lightning bolts join the regular silver versions. Thor collects any in his zone, then applies a new random value from the same range and collects them once more.

If the green Expand respins are active the respins start on a huge 7x7 grid, which can change randomly to 5×5, 6×5, 6×6, or 7×6 sizes. Each expansion adds three lightning bolts, so you have a better chance to see the mighty Thor fill big blocks of the grid.

Trigger respins via the purple Spins chest and lightning bolts can have ‘+1’ overlays for an additional spin. One two, or all three respins features can trigger at once, as lighting strikes up to three times for epic rewards.

The popularity of Norse mythology is reflected in the wide range of games that follow the theme. Try the Age of the Gods: Norse King of Asgard slot by Playtech or the Thor God of Thunder slot machine from Nolimit City  to enjoy some of the best examples.

Bring ancient legends to life as you play the Hammerstorm slot machine. Along with the attractive design and some impressive animations, the game comes with popular features such as wild substitutions and respins where you always win. There’s an exciting twist to respins, as Thor gathers money symbols within his realm, potentially growing in size, adding new values to coins, and over an increased number of spins.

There’s 10,000x your bet up for grabs when you play this slot at our approved real money online casinos. Try our demo version of the Hammerstorm online slot here, then unleash Thor for mighty prizes today.