Thunder Shields
Written by: Kevin Leeson, Journalist
Updated: February 25, 2025, 7:57 am UTC+0
In mid-November, the game developer and aggregator iSoftBet added its fourth title to its Hold & Win series. But this time around, they’ve found inspiration in Norse mythology to deliver wins worth as much as 4,035x your bet in Thunder Shields video slot.
To sum up, Thunder Shields video slot invites players to follow 4 Vikings as they set sail onto a new destination to expand their empire. The game has a somewhat cartoony feel to it. So, it’s very different than other Viking-theme slots like NetEnt’s Branded game. Thunder Shields, at first glance, looks like and Yggdrasil production. The gameplay is a lot simpler since the base game mostly banks on mystery symbols to award payouts. There are, however, a few intricate features. And below, you’ll learn how these will benefit you as you set the reels in motion on this medium to high variance slot.
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Thunder Shields – game statistics and other game info
- Game Provider: iSoftBet
- Type: Video slot, Viking Mythology theme
- RTP: 96%
- Paylines: 40
- Reel: 5 reels and 4 rows
- Min – Max bet: £0.40 up to £40
- Bonuses & features: re-spins, stacked mystery symbols, win multipliers, sticky symbols, symbol collection feature, 3 static jackpots (Thunderstorm prizes), and instant cash win.
- Volatility: Medium to High
- Max Win: 4,035x your stake
- Release date: 19.11.2020
- Suitable for: Everyday pleasure seekers, Daredevils, and High Rollers.

Thunder Shields – Bonus Feature
If it’s the first time you hear about iSoftBet’s Hold & Win feature, you might be curious to know how it affects the gameplay of Thunder Shields.
Essentially, the Hold & Win mechanic somewhat replaces the free spins in this game. To activate the feature, it’s 6+ golden cash shield symbols you’ll need on the reels at once. Each of these symbols will display various amounts that you’ll have a shot at pocketing as the game awards you 3 re-spins (on a new grid).
As the bonus plays out, various reel modifiers could boost the amount you’ll collect at the end of the feature. So, your goal in the Hold & Win re-spins is to land any of the 5 symbols displayed on the reels’ right-hand side to increase payouts. Alternatively, you could also try to fill up the left-hand side achievement counter to collect Thunderstorm prizes above the reels.
Symbols and Scatters
Now that you know, Thunder Shields Video slot doesn’t have a free spins feature as such. So, there no Scatters in play in the game. However, mystery symbols can either appear partially on the grid or stack to award you a win.
Then there’s also a wild hammer symbol that’ll trigger the colossal re-spins feature. From our experience, the colossal re-spins are often triggered because any wild that land in view means that a huge symbol will appear on the first 2 reels. But if you’re so lucky to get another wild before the re-spins are paid. Then the symbols could cover up to 4 reels and even award you a 2x win multiplier too.
For more information about any of the game mechanics mentioned in this short review, you can speak to a customer care agent or refer back to the paytable in Thunder Shields Video slot.
Our thoughts on Thunder Shields
As you probably deduced by now, this slot mostly banks on re-spins to entertain. Yet, because the slot has 2 different re-spin modes, and each comes with its modifiers. The gameplay can be surprising, mainly because most re-spins feature gives you the option to win additional rounds.
But perhaps the best thing about this game if you get a multiplier in the Hold & Win re-spins.
The red symbol will not only increase the value of all golden shield symbols. But it’ll also increase the static jackpot amounts.
Most UK online casinos mentioned on casinoservice.org/uk distribute iSoftbet slots. So if you wanted to embark on a new Viking quest, you’d have no problems finding this slot.
Viking-themes games are some of the most popular in the online gambling community. And it’s lovely to see that iSoftBet contribution brings something unique to a familiar-theme. Try it, and see for yourself.



