The Power of Thor Megaways slot is a 2021 Pragmatic Play game with six reels, up to 117,649 ways and a default RTP of 96.55%. Its signature is a hammer that strikes the top row and turns the symbols beneath into wilds, and its free spins start when scatters spell THOR. Wins are capped at 5,000x your stake.
A hammer landing on the top row turns the symbols below it into wilds.
Scatters that spell THOR start the free spins, where a multiplier rises with every tumble.
96.55% RTP: on average £3.45 of every £100 staked is lost over the long run.
High volatility with a 5,000x cap: £10,000 at £2 and £25,000 at £5.
Check the help screen for free spin counts and multiplier steps.
Developer
Pragmatic Play
RTP
96.55% (default)
Volatility
High
Layout
6 reels, up to 7 symbols each
Ways to win
Up to 117,649
Max win
5,000x your stake
Released
2021
Power of Thor Megaways slot in brief
Pragmatic Play built this Norse-themed game on its own run of Megaways slots, and it uses the studio's tumble system, where winning symbols vanish and the gaps refill. Three ideas carry the game: random reel heights for a ways count that changes each spin, a hammer that converts symbols to wilds, and a letter-collecting bonus with a multiplier that only goes up. Pragmatic Play's site (opens in a new tab) lists the game alongside its other Megaways titles.
Power of Thor Megaways at a glance
Feature
Detail
Effect on play
Reels
6, up to 7 symbols each
Ways change every spin
Ways
Up to 117,649
More ways on taller reels
Tumble
Winning symbols removed, gaps refilled
One spin can pay several times
Hammer
Strikes the top row, makes symbols below wild
Can connect a spin across reels
Free spins
Scatters spell THOR
Multiplier rises with every tumble
RTP / cap
96.55% default / 5,000x
High volatility
How the Power of Thor Megaways slot machine works
As with any online slot, the RNG settles the full outcome, including any hammer strike and every tumble, at the moment you spin. The Gambling Commission's standard on random outcomes (opens in a new tab) requires those results to be unpredictable and unaffected by previous play. What you see next is the order in which the game reveals it.
Pick your stake. The bet is fixed for the spin and any tumbles that follow.
Six reels settle at random heights; the ways count is the product of those heights.
If a hammer lands on the top row, the symbols underneath it become wilds before wins are counted.
Matching symbols on adjacent reels from the left pay according to the paytable.
Winning symbols disappear, those above drop, new ones fill the gaps and the game checks for more wins.
Scatter letters are checked: T, H, O and R together start the free spins.
When no further wins form, the spin ends and your balance and net result are displayed.
The hammer feature: how a row becomes wild
The hammer is a wild-creating feature. Pragmatic describes it as landing horizontally on the top row and turning the symbols beneath it into wilds. Because a Megaways win needs symbols on adjacent reels from the left, a block of new wilds in the middle of the grid can join up a partial combination that would otherwise stop short.
Illustration: one hammer, several ways
Imagine reels one and two each hold two Thor portraits, reel three has none, and the hammer converts three symbols on reel three into wilds. Every Thor on reel one can now link to every Thor on reel two and then to each wild on reel three: 2 × 2 × 3 = 12 ways for a three-of-a-kind, before counting any further reels. That multiplication is why wild coverage on Megaways games can turn a modest spin into a better one. The values here are invented for the arithmetic; the paytable sets the real pays.
The hammer is part of the spin result. It doesn't make the next spin more or less likely to produce a hammer.
Power of Thor Megaways free spins and the THOR letters
The free spins begin when scatter symbols spell T-H-O-R on screen. That is a letter-collection trigger: you need each letter, not just a number of identical scatters. The help screen states how many free spins the round awards and whether extra letters add more.
Inside the round, a multiplier increases with every tumble, according to Pragmatic's game page. Each successive tumble adds to it, so a spin that cascades several times pays its later wins at a higher multiple. Whether that multiplier carries between free spins or resets for each is set out in the game rules, and it makes a big difference to how the round plays: carried multipliers back-load value into the final spins.
Worked example
On a £1 stake, suppose the multiplier stands at 1x when a free spin starts. The first tumble pays 50p at 1x. The multiplier rises one step, the second tumble pays 40p at 2x, which is 80p, and a third pays £1 at 3x, which is £3. The spin returns £4.30, compared with £1.90 without the multiplier. The step size used here is illustrative; Pragmatic's help screen lists the actual increments.
Power of Thor Megaways RTP and cost per session
Power of Thor Megaways RTP is 96.55% in its default version, giving a house edge of 3.45%. Pragmatic, like several studios, offers alternative RTP versions to casinos, so check the figure in the game's information panel.
Power of Thor Megaways: average cost of 100 spins at 96.55%
Stake
Staked over 100 spins
Expected back
Expected cost
10p
£10
£9.65
35p
20p
£20
£19.31
69p
50p
£50
£48.27
£1.73
£1
£100
£96.55
£3.45
£2
£200
£193.10
£6.90
£5
£500
£482.75
£17.25
Those are averages. With high volatility, a 100-spin session at 20p might return nothing like £19.31: it could end with £5 or with £60. Plan your budget around the possibility of losing all of it, which is what our volatility and budgets guide recommends.
Power of Thor Megaways max win and what the cap tells you
The top prize is 5,000x your stake. That is modest for a high-volatility Megaways game; several rivals advertise caps of 10,000x or more. A lower cap usually means the game's variance comes from frequent mid-sized bonus results rather than a very long tail of rare giant wins.
Power of Thor Megaways 5,000x cap at UK stakes
Stake
Note
Maximum payout
10p
Low stake
£500
£1
Mid stake
£5,000
£2
Cap for ages 18–24
£10,000
£5
Cap for ages 25+
£25,000
Players aged 18 to 24 are limited to £2 a spin on online slots, as announced in the government's under-25 stake limit notice (opens in a new tab), so their ceiling here is £10,000. For players 25 and over the £5 limit sets it at £25,000. Our max win caps page explains how the cap is enforced.
Who the Power of Thor Megaways slot suits
Advantages
96.55% default RTP is above the long-standing 96% benchmark.
The hammer adds regular base-game interest.
Letter collection makes progress towards the bonus visible.
Drawbacks
High volatility with a relatively low 5,000x cap.
Free spin details must be read in the help screen.
Tall-reel spins are rare, so ways are often modest.
It fits adults who like Megaways but want a smaller ceiling than the most extreme games, and who are comfortable with gaps between bonuses. Anyone wanting smaller, steadier returns might look at a medium volatility slot instead.
Power of Thor Megaways myths checked
Claims about Power of Thor Megaways
Claim
Verdict
Why
Three letters showing means the fourth is close
False
Each spin is independent; near misses don't predict hits
Raising the stake after losses brings the bonus faster
False
Stake size doesn't change trigger chances
Hammers come in streaks
False
Short runs happen by chance and don't continue
The RTP is the same at every casino
Not always
Several RTP versions can exist
The first point is the near-miss effect: the game has no memory of earlier spins.
A Power of Thor Megaways demo is available at many UK casinos once you have passed age verification, which has been required for free-play games since 2019. Real-money play in Great Britain follows the online slot design rules in force since 31 October 2021: no autoplay, no turbo, at least 2.5 seconds per spin, and no win celebration when the return is equal to or below your stake. No feature buy is offered in the British version.
Where to play Power of Thor Megaways
Pragmatic Play supplies many UK-licensed casinos, but no lobby stays the same for long, so search for the game by name first. All offers here are 18+ and subject to terms. With Coral, depositing and betting £10 or more on slots brings 100 spins at 10p on selected games, accepted within 48 hours and valid for 7 days; there is no wagering on winnings. At Ladbrokes, spending £10 on slots gives 50 spins a day for the first 10 days, up to 500, each worth 10p with no wagering and claimed by 23:59 each day.
PlayOJO's welcome spins are 80 no-wagering spins on Big Bass Bonanza at 10p, after a first deposit of at least £10. Coral and Ladbrokes are run by the same company, so one person may not qualify at both. Set a limit before you start; help is free on 0808 8020 133.
Coral and Ladbrokes are both run by LC International Limited (Entain). If you already hold an account with one Entain brand, you may not be able to open a new account with another; check the terms before signing up.
Significant terms: 18+. New players only. Offer runs 01/10/2026 to 01/02/2027. Deposit (certain types excluded) and bet £10+ on slot games to get 100 free spins (selected games, £0.10 each, 48 hrs to accept, valid 7 days). No wagering on free spin winnings. Deposits by Neteller, PayPal, Paysafe, Skrill, prepaid cards and certain debit cards do not qualify. Restrictions and T&Cs apply. GamCare.org.uk
Read the Coral reviewLicence: LC International Limited, UKGC account 54743. Offer checked 5 October 2026.
Significant terms: 18+. New customers only, from 14/11/25 until further notice. Certain deposit methods excluded. Deposit and spend £10+ on slots for 50 free spins a day during the first 10 days after first deposit and registration (max 500, £0.10 each, selected games, claim before 23:59 each day, valid 7 days). No wagering. Prepaid cards, PayPal, Paysafe, Neteller, Skrill and Moneybookers deposits do not qualify. Restrictions and T&Cs apply. GamCare.org.uk
Read the Ladbrokes reviewLicence: LC International Limited, UKGC account 54743. Offer checked 5 October 2026.
Significant terms: 18+. New UK customers (excluding Northern Ireland). First deposit only. Minimum deposit £10. 80 free spins on Big Bass Bonanza, £0.10 each. No wagering requirements; winnings paid in cash. Cannot be used with any other offer. Only available to players who arrive through the designated offer link. Full T&Cs apply. GamCare.org.uk
Read the PlayOJO reviewLicence: Skill On Net Limited, UKGC account 39326. Offer checked 5 October 2026.
18+. Gambling should be entertainment that costs money, not a way to make it. Decide a budget before you play: plan a slot budget. Free, confidential help: National Gambling Helpline 0808 8020 133.
Frequently asked questions
What is the RTP of Power of Thor Megaways?
The default RTP is 96.55%, which leaves a house edge of 3.45%. Across millions of spins that works out at about £3.45 lost for every £100 staked; a single session can be far better or worse. Pragmatic Play makes more than one RTP version of many games, so check the information screen at your casino. Our guide to where to find RTP on UK slots shows where it is listed.
What is the max win on Power of Thor Megaways?
The maximum win is 5,000 times your stake. That works out at £500 on a 10p spin, £5,000 on £1, £10,000 on £2 (the most an 18–24-year-old can bet) and £25,000 on £5, the limit for players aged 25 and over. Once the cap is reached the game stops paying for that spin or bonus. It is a rare outcome, not a target. See max win explained.
How do you trigger the Power of Thor Megaways free spins?
You need scatter symbols that spell THOR on the screen in one spin. Unlike games that ask for any three or four matching scatters, this one needs each of the four letters. The help screen lists how many free spins you get and any retrigger rules. Free spins can't be bought in the UK version. More on scatters is on our scatter symbols page.
What does the hammer do in Power of Thor Megaways?
The hammer lands on the top row and turns the symbols beneath it into wilds. Those wilds substitute for paying symbols, so they can link partial combinations across reels and add extra ways to a win. It is part of the random result of the spin, so you can't trigger it on purpose, and one hammer doesn't make another more likely. Our wild symbols guide explains how substitution works.
Does the free spins multiplier reset?
Pragmatic's description says the multiplier increases with every tumble during the free games. Whether it carries from one free spin to the next or starts again on each is set out in the game's rules, so read the help screen. If it carries over, later free spins become more valuable as the round goes on. Our page on increasing multipliers in free spins compares the two designs.
Is Power of Thor Megaways high volatility?
Yes, it is rated high volatility. Expect many spins with no win or a return below your stake, and a bigger share of the total return coming from the free spins. The 5,000x cap is lower than many high-volatility Megaways games, which keeps the very top end smaller. If that sounds too bumpy, consider a lower-variance game. Our volatility explainer covers how to read ratings.
Can I play Power of Thor Megaways for free?
You can play free demo mode at UK casinos only after age verification, a rule in place since May 2019. The demo uses play credits and the same maths as the real game, which makes it a good way to read the paytable and see the hammer and THOR letters in action. It won't tell you when to play for real, because every spin is independent. Read our free slot machines guide.
How many ways does Power of Thor Megaways have?
Up to 117,649. The game has six reels holding up to seven symbols each, and the number of ways equals the reel heights multiplied together. A spin with all six reels at seven gives the maximum; shorter reels give far fewer. The count is random each spin and is already part of the result. For how this compares with a fixed grid, see Megaways vs 243 ways.
Is there an ante bet on Power of Thor Megaways?
Pragmatic's game page doesn't list an ante bet for this title, so check the bet panel in the game itself. Where an ante bet exists on any slot, it raises the cost of each spin in exchange for a higher chance of triggering the bonus, and the total stake still has to fit within the UK limits of £2 or £5 per spin. Our ante bet page shows the maths.
Who made Power of Thor Megaways and when?
Pragmatic Play released it in 2021. The studio produces Megaways games under licence from Big Time Gaming, which created the mechanic, and this title uses Pragmatic's tumble system and a horizontal top row for the hammer. Its other Megaways games share the same basic engine but have different features and caps. Browse them on our Pragmatic Play page.
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