1
1win
4.9
Instant PayoutsCrypto AcceptedLive Casino
500% up to $1000
+ 150 Free Spins
PG Soft • Hard Rock Cluster Slot
Inferno Mayhem — Wild Multipliers Cluster
Stage pyrotechnics flank a 5×5 grid with cluster pays. Wild Multipliers carry values that escalate up the high range — hit one in a winning cluster and the multiplier replaces the base payout. Sticky Wilds persist across respins. Free Spins run with retrigger possible, and Super Feature Buy unlocks the round directly for a premium stake.
96.74%RTP
25,000xMax Win
PG SoftProvider
Cluster Wilds, Multipliers & Super FS
Inferno Mayhem runs on a 5×5 grid with cluster pays — five or more matching symbols touching horizontally or vertically anywhere on the grid trigger a payout. PG Soft skipped the classic payline layout for something that fits the concert energy. Skulls, flames, electric guitars, and amp stacks share the reels. The bigger the cluster, the louder the base payout. Hit a 12-symbol blob and the speakers practically blow.
Wild Multipliers are the engine. Every Wild lands with a value pulled from the high range — anywhere from 2x up to 500x. Land more than one Wild inside the same winning cluster and their multipliers add together before the payout resolves. A 50x Wild plus a 200x Wild on the same cluster equals 250x applied to that win. Sticky Wild Respins lock any Wild that drops, then respin the rest of the grid. Land another Wild on the respin? It sticks too. The chain keeps running until a respin lands no new Wilds.
Free Spins fire on three or more Scatters — 10, 12, or 15 spins depending on Scatter count. Every Wild that appears during the round stays locked for the entire feature, so by spin 8 or 9 the grid can be plastered with multiplier-bearing Wilds. Super Feature Buy unlocks the Free Spins round directly at a premium stake, guaranteeing every Wild carries the full 2x-500x multiplier band. That's the path to the 25,000x cap.
96.74%
Above average for PG Soft slots.
25,000x
Stacked Wild Multipliers do the heavy lifting.
High
Dry spells break into explosive clusters.
4
Core mechanics that stack together.
Inferno Mayhem Free Demo
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Big Win Potential
Experience Inferno Mayhem! Try the game mechanics and features risk-free with our free demo mode.
96.74%
RTP
25,000x
Max Win
High
Volatility
$0.20
Min Bet
$100
Max Bet
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Experience the full potential of Inferno Mayhem using virtual credits. Learn the game rules and bonus rounds.
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Mobile Optimized
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Bonus Mechanics Explained
4 mechanics drive the 25,000x max win. Here's exactly how each one works.
Wild Multipliers (2x–500x)
How to Trigger
Wild symbol lands anywhere on the 5×5 grid during base game or Free Spins. Visual: amp-stack icon engulfed in flames.
What Happens
Each Wild arrives with a multiplier value pulled from the high band — 2x at the floor, 500x at the peak. When a Wild participates in a winning cluster, its multiplier replaces the base symbol payout for that cluster. Two or more Wilds inside the same cluster? Their multipliers stack additively before the payout resolves. A 100x Wild plus a 250x Wild on a 7-symbol cluster lands at 350x of the cluster value.
Multipliers
Range: 2x, 3x, 5x, 10x, 25x, 50x, 100x, 250x, 500x. Distribution skews toward the lower band — most Wilds land 2x-25x, with 100x+ values surfacing roughly once every 40 Wild drops.
Odds
Wild appearance rate in base game: ~1 in 7 spins. Two Wilds inside the same cluster: ~1 in 35 spins. A 500x Wild contributing to a winning cluster: ~1 in 1,200 spins.
Variants
Same multiplier band across base game and Free Spins. Super Feature Buy guarantees the full 2x-500x range stays active for every Wild during the feature.
Strategy
Wilds drive most of the upside. The high range matters because a single 500x Wild on a winning cluster delivers more than dozens of base-symbol clusters combined. Bankroll for the dry spans between meaningful Wild hits — high volatility means clusters without Wilds return little.
| Range | 2x to 500x |
| Stacking | Additive (same cluster) |
| Wild Rate | ~1 in 7 spins |
| 500x Odds | ~1 in 1,200 spins |
| Distribution | Weighted to lower band |
Sticky Wild Respins
How to Trigger
Any Wild landing during base game locks in place. The remaining grid respins automatically while the Wild stays put.
What Happens
Once a Wild sticks, the rest of the 5×5 grid respins. If new Wilds appear on the respin, they stick too. The chain continues spin after spin until a respin produces no new Wilds. Each respin pays out clusters using the locked Wilds plus whatever new symbols land. Multiplier values on the locked Wilds carry through every respin in the chain.
Multipliers
Stacked Wilds during a respin chain combine additively when they share a cluster. Three locked Wilds at 50x, 100x, and 200x landing in the same winning cluster equal 350x applied to the cluster.
Odds
Single-respin chain: ~1 in 7 spins (mirrors Wild rate). Two-respin chain: ~1 in 50 spins. Three or more respins back-to-back: ~1 in 320 spins.
Variants
Sticky behavior persists in Free Spins as well — but in Free Spins the Wilds stay locked for the entire round, not just one chain.
Strategy
Respin chains are how meaningful base-game wins build. A single Wild rarely produces a memorable payout; a chain of 3 stacked multiplier Wilds can. Watch the multiplier band on locked Wilds — a chain that locks 100x+ values is worth committing the next spins to.
| Trigger | Any Wild lands |
| Chain Length | Until no new Wild |
| Multipliers | Stack additively |
| Two-Respin Odds | ~1 in 50 spins |
| Free Spins | Wilds stay all round |
Free Spins (up to 15)
How to Trigger
3 Scatters award 10 spins. 4 Scatters award 12 spins. 5 Scatters award 15 spins. Scatters can land on any position.
What Happens
Every Wild that appears during the round locks to its grid position for the duration of the feature — not just one respin chain, the entire round. As spins progress, Wilds accumulate across the 5×5 grid. By spin 8 or 9 of a 15-spin round, the grid can carry 6+ locked multiplier Wilds, and the per-spin payout climbs accordingly. Retrigger is possible: landing 3+ additional Scatters during the feature adds more spins on top.
Multipliers
Locked Wilds during Free Spins keep their original multiplier values. When multiple locked Wilds share a winning cluster, multipliers add together. Late-feature spins with 5+ stacked Wilds at high values are where 5,000x+ single-spin payouts surface.
Odds
Free Spins trigger rate: ~1 in 220 base spins. 5-Scatter trigger (full 15 spins): ~1 in 4,500 spins. Retrigger rate during feature: ~12% of rounds.
Variants
Super Feature Buy guarantees entry plus the full 2x-500x multiplier band stays active for every Wild that lands.
Strategy
Free Spins value scales with round length and Scatter count. Three Scatters (10 spins) average ~50x return. Five Scatters with full sticky stacking can clear 1,000x. The 25,000x cap requires Free Spins with multiple high-band Wilds locked early.
| Spins (3 Scatter) | 10 |
| Spins (4 Scatter) | 12 |
| Spins (5 Scatter) | 15 |
| Trigger Rate | ~1 in 220 spins |
| Retrigger | ~12% of rounds |
Super Feature Buy
How to Trigger
Player purchase from the base-game menu. Subject to jurisdiction — UK, Netherlands, and several other markets disable buy features.
What Happens
The Super Feature Buy unlocks the Free Spins round directly at a premium stake. Beyond standard Bonus Buy, the Super tier guarantees every Wild that appears during the feature carries a multiplier from the full 2x-500x band — no truncation to the lower end. This locks in the maximum theoretical upside path.
Multipliers
Standard Bonus Buy: regular multiplier distribution applies. Super Feature Buy: every Wild guaranteed within 2x-500x range with normal weighting.
Odds
Buy features bypass the ~1 in 220 natural Free Spins trigger. Super Feature Buy is the only path that consistently feeds high-band Wild multipliers into the locked-Wild stacking mechanic.
Variants
Standard Bonus Buy at 100x stake. Super Feature Buy at higher premium (typically 300x-500x stake depending on operator). Super tier is the only configuration where the 25,000x cap becomes a realistic chase.
Strategy
Super Feature Buy is for high-rollers chasing the cap — the premium stake is steep but it routes every Wild through the full multiplier band. Standard Bonus Buy at 100x averages roughly 70x return; Super tier averages higher but carries wider variance.
| Bonus Buy | 100x stake |
| Super Buy | 300x-500x stake |
| Super Guarantee | Full 2x-500x band |
| Cap Path | Super tier only |
| Availability | Jurisdiction-dependent |
Inferno Mayhem FAQ
Frequently asked questions about the game
Inferno Mayhem runs at 96.74% RTP — that's above the industry average of ~96%. Keep in mind some casinos might offer lower RTP variants, so always check before you spin.
The cap sits at 25,000x your bet. To put that in perspective, a $1 spin could theoretically return $25,000. You'll need stacked Wild Multipliers during Free Spins to get anywhere near that max win.
Yes, it's a high volatility slot. You might go through dry patches, but the Wild Multiplier stacking and persistent Free Spins Wilds can produce serious payouts when things connect.
Definitely. PG Soft builds mobile-first — the 5x5 grid scales smoothly on any screen. Works on iOS, Android, tablets, whatever browser you've got.
Forget paylines. You need 5 or more matching symbols touching each other horizontally or vertically — anywhere on the 5x5 grid. Bigger clusters mean bigger base payouts, and Wild Multipliers amplify everything.
Three Scatter symbols get you 10 free spins. Four Scatters bump it to 12, and five Scatters give you the full 15. During the round, all Wilds stick to the grid permanently — the longer it goes, the wilder it gets.