Yggdrasil and Jelly unleash electrifying hit Valhalla Saga: Thunder of Thor

8th November 2021 ­­– Yggdrasil, the leading worldwide publisher of online gambling content, has partnered with Jelly for an epic Norse adventure, Valhalla Saga: Thunder of Thor.  Prepare for glory in this ultra-epic Viking series like no other!

Set against the backdrop of a barren land, Thunder of Thor boasts iconic artwork, from runic symbols to fearsome axes, longboats, and Vikings.

The first title in the Valhalla Saga trilogy features the legendary Thor in this 5×3, 20 payline video slot, and sees Jelly’s new PowerLinks™- powered innovative Free Spins mechanic make its highly anticipated debut.  PowerLinks™ features award money driven prizes in the Free Spins and will always guarantee a feature payout.

On any spin, the Thunder of Thor modifier can trigger to create Wild symbols with attached multipliers of x2, x5, x10, x50 or x100 to tantalise the potential for huge wins.  A bonus respin can trigger if the player has 4 scatter symbols in view; this will respin the remaining reels to give a second chance at landing the 5th scatter to get in to the Free Spins bonus.

Players can win up to 10,000x in the PowerLinks™ Free Spins round.  This feature is triggered by 5 or more scatters landing in view.  By triggering Free Spins, the player is awarded 5 free spins, with the triggering scatter symbols creating special reel zones.  If any additional scatter symbols land in the reel zones, the player can enjoy bigger prizes at the end of the Free Spins bonus.

Thunder of Thor is the second release from Jelly – hot on the heels of Savanna Roar – since joining the YG Masters program.

The game is developed through Yggdrasil’s state-of-the-art GATI technology enabling partners to employ the preconfigured, regulation-ready, standardised development toolkit to produce consistently cutting-edge content followed by rapid distribution.

Stuart McCarthy, Head of Partner Programs at Yggdrasil said: “Our latest collaboration with Jelly offers an exciting and immersive experience, steeped in Norse mythology. With the Thunder of Thor modifier offering huge win potential and a lucrative free spins mode, there’s plenty to look out for in this thrilling hit.

Victoria Newbolt, Marketing Lead at Jelly, said: “Through the YG Masters initiative we’re able to create bold, expressive games and deliver an electrifying experience.  Our latest game through the Masters program takes an iconic tale and we’ve added tonnes of fun on every spin.”

Max win: 400 000€
Volatility: High
RTP: 95,90€


The Valhalla Saga incorporates three of the most famous Vikings: Thor, Loki and Odin and give each their own flavour, incorporating its own unique elements, varying volatility while keeping core elements of game play similar.

Thunder of Thor is the first of the three part epic, and with it sees the launch of the POWERLINKS TM game mechanic. POWERLINKS creates prize zones that can be upgraded as the Free Games bonus round plays out. The game also features the Thunder of Thor modifier, which can award wild multipliers of up to 100x to tantalise the potential for huge wins!


Thunder of Thor slot has 20 paylines, an RTP of 95.90%, high volatility and average hit frequency of 32.84%.

As you can see, this spinner has a high average hit rate, but is also pretty volatile – so what does this mean in reality? Typically, it means the game can go through hot and cold runs, with the potential for some really lucky spin clusters! This game doesn’t consistently fire-out wins at the theoretical average of 32.84% – it’s often more likely to be below or above this level – with the upside having serious power when hot runs are encountered. This makes Thunder of Thor slot ideal for players who like excitement and the potential to win big returns (relative to their bet size).

When it comes to betting, you can play Thunder of Thor slot with bets ranging from €0.20 to €40.

Thunder of Thor slot machine also has a Bonus Buy option, which costs 60X the standard bet, but instantly triggers the potentially powerful bonus round.

Payouts in Thunder of Thor

Thunder of Thor slot has a line-up of nine symbols that payout for landing a standard 3-5 icons: Thor, Viking ship, Thor’s Axe, Golden chalice, A, K, Q, J and 10. As illustrated in the Thunder of Thor paytable below, wins can range from X0.2 to X25 the triggering bet, creating a large range of potential base game wins. The basic payout range on the minimum €0.20 bet, is €0.04 to €5, while on the maximum bet of €40, it’s €8 to €1,000.

While the base game wins in Thunder of Thor slot machine are fairly standard, you can potentially send wins soaring to Valhalla, if you get enough luck on these bonus features. With a maximum win up to X10,000 the triggering bet, the game can theoretically payout between €2,500 and €400,000, depending on your level.


When you play at the best Thunder of Thor slot sites, you can try and trigger the game’s powerful bonus features – Bonus Respins, Free Games and Hammer of Thor! Here’s an insight into Thunder of Thor’s slot bonuses:


If you trigger four scatters on reels 1-4, but the fifth scatter isn’t activated, a Bonus Respin can be awarded, with the animated Thor’s Hammer smashing the slot screen! The Bonus Respin has the potential to bring in another Scatter symbol and trigger the Free Games.


The Free Games round unleashes the new PowerLinks™ bonus mechanic. The Free Games are launched when five or more scatters land on the reels and leave an imprint on the screen. The bonus gives you five Free Games, with any scatter symbol landing in a previously imprinted location, further boosting the payout potential. Wins in the Free Games are revealed at the end of the round and paid as a multiplier of the original bet.


A special Hammer of Thor modifier can be triggered on any spin, amidst a burst of animated action and sounds. Any wild can become either a x2, x5, x10, x50 or x100! wild multiplier. This activates huge potential wins and is one of they top reasons why this game is getting a lot of attention.

Overall, Thunder of Thor video slot has some exciting new bonus features, creating exciting visuals and the potential for some nice wins if you get enough luck. Due to the game’s volatility, buying the bonus for x60 is an option, but be sure to consider your budget before giving it a go.

Leave a Reply

Your email address will not be published. Required fields are marked *