Slots Like Big Bad Wolf Pigs Of Steel: Reinforced Frames, Piggy Wilds and Three Bonus Tiers
Big Bad Wolf: Pigs of Steel is the third chapter in Quickspin’s long-running pig and wolf saga, and it keeps the format the series has always used: five reels, three rows and 25 fixed paylines, with wins paid from the left. Quickspin ships it at a 96.14% default return with the variance dial pushed to the very top of its five-point scale, accepts bets anywhere between £0.20 and £100, and puts the published ceiling somewhere near 18,000x stake. Every win tumbles away, the pigs turn wild after the second, fourth and sixth tumble in a sequence, and once enough symbols have been cleared the survivors get bolted into reinforced steel frames that refuse to leave the board. Three moons open a free spins round, four opens a better one, five opens the best. Anyone hunting for slots like Big Bad Wolf: Pigs of Steel usually wants the same combination: a chain reaction that keeps rebuilding itself, and a bonus that pays for the patience.
Where to Play
18+ only. T&Cs apply. Please gamble responsibly.
How the Game Works
Reviewed by Brian TaylorPublished: July 2026
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The premise has been upgraded since the pigs last appeared. They are no longer three nervous brothers hiding behind a stack of straw, they are builders with hard hats, hand tools and a plan. The reels sit inside whichever house is currently standing, and the base game opens with the straw one: a countryside afternoon, a windmill turning in the distance, a couple of red-roofed cottages on the hillside. The wolf keeps his distance until the free spins arrive, at which point he strolls into shot looking thoroughly unimpressed with everyone.
Mechanically it plays like a cascade game with an unusual safety net. Land three or more matching symbols along one of the 25 lines and those symbols burst, everything above drops down, and the board is paid again. Most tumble games leave it there. This one counts. Every pig symbol that gets removed during a sequence is logged on a meter, and once the count reaches three, the pigs still on the board are reinforced. Reach six and they are reinforced twice over. A reinforced symbol that would normally be cleared simply loses a layer of protection instead, so it stays where it is and keeps working for the next drop.
Running alongside that is a second counter tied to the tumbles themselves. After the second tumble in a chain, every pig on the board turns into a Piggy Wild. After the fourth it happens again, and after the sixth. Those two systems interact in a way that takes a few sessions to appreciate: the reinforced frames keep pigs alive long enough for the tumble counter to catch up, and the tumble counter then converts those survivors into wilds. Get both moving at once and the board can rebuild itself four or five times before it finally goes quiet. Get neither and the spin is over in a second and a half. That gap is the whole game.
Symbols and Paytable
The paytable is short. Five card ranks from 10 up to Ace carry the low end, cut into painted wooden planks so they sit into the scenery rather than on top of it. Above those are two tool symbols, an axe and a trowel with bricks, and above those the three pigs in their red, green and blue helmets. Published paytables put the pigs somewhere around 15x to 25x stake for a full line of five, with the tools nearer 5x and the card ranks between 1x and 2x. The standard wild, a hammer and spanner crossed over a gold plate, is the single best symbol on the reels at roughly 40x for five. Piggy Wilds behave differently: they substitute like a wild but pay the value of the pig they replaced, so a board full of transformed blue pigs pays as blue pigs, not as top-tier wilds. Nobody is getting rich from one paid line here, which is exactly why the game is built around chains rather than single hits.
Game Screenshot
The base game running inside the straw house, with a windmill and red-roofed cottages spread across the green hillside behind the reels. The wooden game sign hangs on the roof, and to its right sit the three small pig portraits marked WILD in red, green and blue surrounds, the red one lit and the other two still dark. Several symbols are held inside coloured reinforced frames: a blue frame around the pig in dungarees on the bottom row, a green frame on the axe beside it and red frames on two trowel-and-bricks tiles. The rest of the grid holds a run of 10 tiles, a green Q, a blue J and a pitchfork. A green BONUS sign hangs over the hillside on the left of the screen. The bar underneath reads a balance of 4930.00, a win of 5.00 and a total bet of 10.00, all shown in euros on this capture.
Bonus Features Explained
Tumbles and Piggy Wilds
Every winning combination clears and refills, and the chain continues for as long as new wins keep landing. The transformation schedule is fixed rather than random, which is worth knowing because it changes how you read a spin. Two tumbles in and the pigs on screen become wilds. Four tumbles in it happens again to whatever pigs have arrived since. Six tumbles in, a third time. There is no hidden trigger and no weighting, so once you have watched the counter tick past two you know a wild conversion is already banked.
The Pigs of Steel Meter
This is the feature the game is named after and the one that separates it from the two earlier titles. Removed pig symbols are counted across the sequence. Three removals fits protective frames to the pigs currently on the board, six removals adds a second layer. Protected pigs that form part of a winning line still pay, but instead of vanishing they shed a layer of steel and stay put. In practice that turns a two-tumble sequence into a four or five-tumble one surprisingly often, and because the protection is granted to what is on the board rather than to a specific symbol, a well-timed frame can sit under three separate wins before it finally gives way.
The Three Free Spins Tiers
Moon symbols are the scatters, and how many land decides which round you get. Three moons awards the Bonus Game, ten free spins at a x1 win multiplier with both meters resetting between spins. Four moons awards the Super Bonus Game, ten spins at x2 with the Pigs of Steel meter carrying over from spin to spin while the Piggy Wild counter resets. Five moons awards the Ultra Bonus Game, ten spins at x3 with both meters persistent. That last version is the one worth waiting for, because a protection level that never resets means the board is effectively armoured from the first spin onwards. Collecting a moon during any of the three rounds adds two more free spins and doubles the current multiplier, so a x3 start can become x6 and then x12 without the round ever needing to be retriggered in the traditional sense.
A free spin in progress at the brick house under a night sky, with the wolf standing at the left in dark work clothes, hands on his hips. A house-shaped badge in the centre of the board reads x6, and the message beneath it says DOUBLED MULTIPLIER and 2 EXTRA FREE SPINS. A plaque up on the roof shows the same x6 with x12 marked alongside it, and the three pig portraits marked WILD sit on the right with the first one lit. The reels behind the message are dimmed, with two 10 tiles and faint K and J tiles showing through.
The Feature Buy, and Why British Players Will Not See It
Away from Great Britain the game offers two purchase routes. Paying 60x the current stake guarantees at least three moons and therefore the entry-level Bonus Game, and that build runs at a slightly better 96.41% RTP. Paying 240x guarantees at least four moons and the Super Bonus Game, at 96.78%. Neither is available at a UKGC-licensed casino, where feature buys are not permitted, so the badge will either be missing or greyed out. The prices are still informative. Charging four times as much for one extra scatter tells you how much the studio thinks that upgrade is worth, and it lines up with how the round actually plays.
Pros and Cons
Pros
- The reinforced frames give cascades a genuine second wind rather than just decorating them
- Fixed transformation points at tumbles two, four and six mean you can read a spin instead of guessing at it
- Three separate bonus tiers give the scatter count real meaning, which most games with a single free spins round throw away
- Moon collects during the round double the multiplier outright, so the ceiling climbs quickly once a good spin starts
- The artwork and animation are a clear step up on the 2013 original without losing the series’ sense of humour
Cons
- 96.14% is a noticeable drop from the 97.34% the first Big Bad Wolf ran at, and long-time players of the series will feel it
- Reduced 94.19%, 92.07% and 87.15% builds are in circulation and the lowest of those is a completely different game
- The base paytable is weak on its own, with the best regular symbol around 40x stake for five
- Two overlapping meters plus a multiplier plus a tumble counter is a lot of information for one small screen
- Published max win figures do not agree with each other, which makes the headline number harder to trust than it should be
Demo Play
Play credit, identical maths, nothing at stake. It is the one place you can sit through a couple of hundred spins without it costing anything, so spend them ignoring the win amounts and watching the pig counter beside the reels instead. Once you can tell at a glance whether a sequence is about to armour up or die out, the game reads completely differently, and that understanding transfers straight across to the paid version.
Game Information
Expert Take
Coverage of this one has been positive but rarely enthusiastic, and the reason comes up again and again: it is a well-made sequel that asks its audience to accept a lower return than the game they remember. Reviewers have generally liked the protection mechanic, singling it out as a smarter answer to the cascade problem than simply bolting on a multiplier ladder, and the three-tier bonus has been credited with giving the scatter count a purpose. The reservations cluster around the same two points. The default RTP sits more than a full percentage point below the 2013 original, and the sheer density of overlapping systems makes the first hour heavier going than a 25-line slot has any right to be. Nobody has called it a poor game. Plenty have called it a busy one.
Similar Slots to Try
The 2013 original on the same 5×3, 25-line frame, with Swooping Reels doing the tumbling and the moon meter blowing the house down. A far more generous 97.34% RTP and no meters to keep track of.
The middle chapter, which swapped 25 lines for up to 117,649 ways and a progressive tumble multiplier. Its 30,540x ceiling is well clear of anything the Pigs of Steel board can reach.
Leander’s take on the same fable, also 5×3 with 25 lines and a higher 96.77% RTP, but filed as medium-low volatility. The obvious choice if you like the story and not the swings.
Relax Gaming drops the pigs into a jazz-age mansion across 243 ways at 96.55%, with expanding and sticky wilds instead of tumbles. Same animal, entirely different rhythm.
About the Developer
Quickspin has been building slots out of Stockholm since 2011 and has belonged to Playtech since 2016, an arrangement that has left the studio unusually intact. It still ships under its own name, still writes its own maths, and still returns to the same handful of characters years after most studios would have moved on. Big Bad Wolf: Pigs of Steel is the clearest example of that habit anywhere in the catalogue: a decade after the first game, the same three pigs are back with a mechanic built specifically for them. Alongside the slots the company sells a set of operator-facing promotional tools and runs a separate live-casino arm, and the games library now runs to well over a hundred titles. If there is a criticism to make, it is that the studio favours refinement over invention, and a new Quickspin release usually turns out to be a familiar idea done carefully rather than a new one done roughly. Our Quickspin developer page lists the rest of the catalogue we cover.
Released the same year and rated just as volatile, but stripped down to ten fixed lines and one expanding symbol. A 5,846x ceiling makes it the calmer of the two on paper.
The studio’s other long-running series, and its most mechanically crowded modern release. Wild types push the grid outwards here rather than steel frames holding symbols in place.
Quickspin’s other fairytale, on the same 25-line frame at a much higher 97.09% RTP and only medium-low volatility. Multiplier wilds do the work instead of tumbles.
Nine lines, locked symbols and multipliers that climb to 25x for a top prize of 5,625x. The closest thing in the catalogue to a symbol-holding mechanic before the steel frames arrived.
Big Bad Wolf Pigs Of Steel Key Stats
Big Bad Wolf Pigs Of Steel slot information last reviewed: July 2026
| Big Bad Wolf Pigs Of Steel Slot Info | |
|---|---|
| Name: | Big Bad Wolf: Pigs of Steel |
| Provider: | Quickspin |
| Developer Rank: | 27 out of 130+ Quickspin games |
| RTP: | 96.14% default (reduced 94.19%, 92.07% and 87.15% builds are also published, and where a feature buy is offered it runs at 96.41% or 96.78%, so check the game information screen before playing) |
| RTP Category: | Medium-High |
| RTP Rank: | Sits a little above the floor of the 96.00% to 96.49% band and marginally under the UK online average |
| Feature Description: | Tumbling reels, Piggy Wild transformations after the second, fourth and sixth tumble, Pigs of Steel reinforced frames granted at three and six pig removals, Moon scatters, three free spins tiers running at x1, x2 and x3 with the two meters carrying over differently in each, moon collects during the round for two extra spins and a doubled multiplier, feature buys at 60x and 240x outside Great Britain, variable RTP configurations. |
| Feature Categories: | Tumbling Reels, Free Spins, Wild Symbol, Symbol Protection, Win Multipliers, Bonus Buy |
| Reels: | 5 |
| Rows: | 3 |
| Paylines: | 25 fixed, paying left to right |
| Volatility: | High (rated 5 out of 5 by Quickspin) |
| Volatility Rank: | Upper tier among the Quickspin games we track, level with Book Of Inferno on the studio’s own 5 out of 5 scale |
| Min Bet: | £0.20 |
| Max Bet: | £100 |
| Max Win: | Around 18,000x stake. Published figures disagree, with some trackers recording 18,173x, others 18,081x, and several simply rounding to 18,000x |
| Release Date: | 14 November 2023 |
| Slotslike Rank: | New listing, not yet ranked among our 4,300+ games (View Top 100) |
Slots with the Same Features
Tumbling and Cascading Wins
Chain reactions are the engine here, and the wider set of games built the same way lives on our cascading wins slots page. These two show how differently the idea can be dressed.
Relax Gaming’s six-by-six jungle board clears whole blocks at a time and hands you a choice of free spins packages at 96.25%. Bigger grid, no symbol protection.
Push Gaming keeps it to 20 lines on a five-by-four board at 96.49% and medium volatility, using substitution symbols where the pigs use steel frames.
Fairytale Themes
The three little pigs turn up in more slots than almost any other folk tale, and the rest of the storybook shelf sits on our fairytale slots page. If it is the pigs you are following rather than the fable, we keep those gathered on the pigs slots page.
The other big wolf story, handled by NetEnt across 20 lines at 96.30% with random wilds and a set of pick features. Gentler, prettier and far less demanding to follow.
Playtech’s older reading of the same fable over 50 lines and four rows. Low volatility and a 92.01% return recorded on our records, so treat it as a change of pace rather than an upgrade.
High Volatility
Top-of-scale variance means long flat spells broken by a handful of spins that carry the whole session. Every game we cover with that shape is listed together on the high volatility slots page.
Blueprint sends the wolf out alone across up to 117,649 ways at 96.21%, with cascades, sticky wilds and a variance rating a notch above this one.
Red Tiger’s wealthy pigs run cascades and free spins to a 10,474x cap on a 95.71% build. Same animal and the same chain-reaction shape, on a much wider board.
Frequently Asked Questions
How does the bonus feature work in Big Bad Wolf: Pigs of Steel?
Moon scatters decide everything. Three moons start the Bonus Game, ten free spins at a x1 multiplier with both meters clearing between spins. Four moons start the Super Bonus Game, ten spins at x2 with the Pigs of Steel protection carried over from spin to spin. Five moons start the Ultra Bonus Game, ten spins at x3 with both the protection meter and the Piggy Wild counter left running throughout. Every moon collected once a round is under way adds two more spins and doubles the multiplier you are currently on.
What is the RTP of Big Bad Wolf: Pigs of Steel?
The default configuration returns 96.14%, which places it in the medium-high band between 96.00% and 96.49%, a shade above the bottom of that range. Quickspin also publishes reduced builds recorded at 94.19%, 92.07% and 87.15%, and operators choose which one to run. Where a feature buy is offered the maths changes again, to 96.41% on the 60x route and 96.78% on the 240x route. Always read the figure in the game information screen rather than assuming the headline number applies.
What is the maximum win on Big Bad Wolf: Pigs of Steel?
Roughly 18,000x your stake, reached through the Ultra Bonus Game with the multiplier doubled several times over. The exact number is where sources part company: some trackers record 18,173x, others 18,081x, and a good many round it off to a flat 18,000x. We have not found a figure published by Quickspin itself that settles it, so treat 18,000x as the working answer.
How volatile is Big Bad Wolf: Pigs of Steel?
High, and the studio does not soften the label: this one is filed at the very top of the five-point variance scale Quickspin applies to its own games. You notice it fastest in the base game, where a great many spins pay one small line and then stop dead instead of building a chain. The money is held back for the free spins tiers, and most of all for the four and five-moon rounds, where the steel protection carries across every spin rather than clearing each time.
What are the best slots like Big Bad Wolf: Pigs of Steel?
Start inside the series. The 2013 Big Bad Wolf uses the same board with a much higher return, and Big Bad Wolf Megaways takes the tumbles onto a six-reel ways engine with a bigger ceiling. Outside Quickspin, The Great Pigsby from Relax Gaming and Leander’s Little Pigs Strike Back cover the same fable at gentler variance, while Piggy Riches Megaways matches the cascade rhythm on a far wider grid.
Can I play Big Bad Wolf: Pigs of Steel for free, and is there a demo?
Yes. A free-play build sits in the demo section of this page, and most British casinos carrying the Quickspin library run their own no-deposit demo as well. The credit is not real and nothing you win in it can be withdrawn, but the maths is identical, which makes it the sensible place to work out how the two meters interact before you stake anything.
Who makes Big Bad Wolf: Pigs of Steel?
Quickspin, the Stockholm studio founded in 2011 and owned by Playtech since 2016. It released this one on 14 November 2023 as the third entry in the Big Bad Wolf line, a decade after the original, and the Pigs of Steel protection mechanic was built specifically for it rather than carried over from another game.
Is the feature buy available at UK casinos?
No. The game ships with buy options at 60x and 240x the current stake, but feature buys are not permitted at UKGC-licensed sites, so British players will find the badge missing or inactive. The only route into the free spins rounds here is landing three or more moons on the reels.
Our Verdict on Big Bad Wolf Pigs Of Steel
Ten years on, Quickspin has found something genuinely new to say about a cascade. The reinforced frames answer the oldest complaint about tumble games, that a good sequence dies for no reason other than that it ran out of matching symbols, and pairing that protection with a fixed wild-transformation schedule gives every chain a shape you can actually follow. The three-tier bonus is the other quiet success, turning the scatter count from a formality into the most important number on the screen. What holds it back is arithmetic. Dropping from 97.34% to 96.14% is a real cost to anyone who played the first game to death, the paytable underneath all this cleverness is thin, and there are four separate things to keep an eye on at once. If you enjoyed Big Bad Wolf Megaways and wanted the same energy on a tighter board, this is the better-built game of the two. If you came back to the series expecting the return the original gave you, check the RTP in the help file first and set your expectations from there.
SlotsLike rating: 8/10