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NetEnt · Slot Review

Secret of the Stones MAX — Full Review & Free Demo

4.2/5
Play for Real →
RTP
96.72%
Volatility
High
Max Win
25,000x
Provider
Reels
5
Paylines
25
Bet Range ($,€,£)
0.25 - 125
Rating
4.2/5
Released
Feb 2020

Secret of the Stones MAX Overview

Secret of the Stones MAX is a refreshed version of NetEnt's 2013 classic, built on a 5x3 grid with 25 paylines. Stonehenge is the inspiration here, so expect stone-carved animal symbols, earthy tones, and a mystical vibe. The standout feature is the toggle between two modes: a low-volatility classic version capped at 2,500x and a high-volatility Max version reaching 25,000x the bet.

Bets run from 0.25 to 25 per spin. RTP sits at 96.72% in classic mode and 96.81% in Max, both comfortably above average. If I'm honest with chat, the graphics still look their age, but the core mechanic, that stone-picking bonus, gives this slot genuine character.

Symbols and Paytable

Lower-paying symbols are the standard 10, J, Q, K, and A carved into stone. Five of a kind pays between 2x and 6x the bet, and these values stay the same regardless of which mode you pick. Nothing exciting there, but they keep the base game ticking over with small returns.

Premium symbols are a snake, wolf, bull, owl, and deer, all etched into rock. Five matching premiums pay between 8x and 50x in classic, but that jumps to 10x through 160x in Max mode. The deer is the top payer. Worth knowing: the deer, owl, and bull can all convert into wilds during Max Free Spins, which is how the big wins happen.

Wild is an old man with a cane. He subs for everything except the scatter. During free spins he can appear stacked across a full reel. Scatter is a golden tree trunk; land 3 and you trigger the bonus.

Symbol Payouts

icon 1
5x160
4x16
3x1.6
icon 2
5x50
4x12
3x1
icon 3
5x32
4x4.8
3x0.8
icon 4
5x14
4x3.2
3x0.6
icon 5
5x10
4x2.4
3x0.4
icon 6
5x6
4x1.2
3x0.2
icon 7
5x5
4x1
3x0.2
icon 8
5x4
4x0.8
3x0.2
icon 9
5x3
4x0.6
3x0.2
icon 10
5x2
4x0.6
3x0.2
icon 11
Wild
icon 12
Scatter

Hidden Bonus Feature and Free Spins

Here is where the game earns its keep on stream. After 3 scatters land you get the Hidden Bonus Feature: 20 stones appear and you pick as many as the number of scatters you hit. Each stone hides one of four rewards. Extra Free Spins add 3, 4, 5, 6, or 10 spins in Max mode. Multipliers stack on top of a base 1x, with a 3x boost possible only in Max. Wild Reels lock reels 2, 3, or 4 as fully stacked wilds for the entire round. Extra Wild Symbols turn the deer, bull, or owl into additional wilds.

Once you have picked, the free spins play out with whatever combination of bonuses you collected. A good pick session with stacked wild reels plus a 3x multiplier is genuinely exciting on stream; chat goes wild for the stone picks because each reveal changes the round's potential completely.

Bonus Buy Options

Bonus Buy Hidden Bonus Feature
Hidden Bonus Feature
Before free spins begin, players pick stones from a set of 20. Each stone reveals extra free spins, multipliers, wild reels, or extra wild symbols. The number of picks equals the number of scatters that triggered the feature.
Bonus Buy Free Spins
Free Spins
Triggered by landing 3 or more scatter symbols. Starts with 3 free spins, enhanced by whatever bonuses were picked during the Hidden Bonus Feature. In Max mode, extra wild symbols and higher multipliers are available.

Volatility, RTP, and Max Win

Switching modes is as simple as pressing one button mid-session. Classic mode plays like a low-volatility grinder: steady, smaller hits, 2,500x ceiling. Max mode flips that to high volatility with a 25,000x cap. As NetEnt put it, you either win big or win often. I like having both available because it lets me adjust pace depending on how the session is going.

96.81% RTP on Max is solid. Not everyone will enjoy the swings in Max mode though; the base game can drag a bit between triggers, and when the picks go badly your free spins round feels underwhelming. That contrast is the trade-off with high volatility.

Ryan Cole’s Verdict

Final Verdict

I'd stream Secret of the Stones MAX for the stone-picking round alone. Chat loves interactive bonus triggers and this one delivers genuine tension with every reveal. The dual-mode toggle is a smart touch too; I can run classic when warming up and flip to Max when the session heats up.

Visually it has not aged well, and the base game between bonuses can feel flat. But the maths model in Max mode, combined with that 25,000x potential and a 96.81% RTP, makes it worth a session. If you want a no-nonsense classic with a proper high-volatility option bolted on, this is a good pick.
4.2
★★★★☆
out of 5
✓ Pros
Switch between classic and Max mode instantly
Hidden Bonus stone-picking adds real interaction
Max win jumps to 25,000x the bet
RTP of 96.81% in Max mode
Free spins customised by your stone picks
✗ Cons
Graphics still look dated despite the refresh
Base game can feel slow between triggers
Max mode volatility may drain balance quickly
Ryan Cole
Ryan Cole
Lead Casino Slots Analyst
5+ years analysing online slots for the UK market. Every game is played for a minimum of 500 demo spins before publication. No affiliate bias — ever.
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Secret of the Stones MAX FAQ
How does the switch between classic and Max mode work?
A single button below the reels toggles between modes instantly. Your bet stays the same. Classic gives low volatility and a 2,500x max win; Max raises volatility and the ceiling to 25,000x.
What triggers the Hidden Bonus Feature?
Landing 3 or more scatter symbols activates it. You pick stones from a pool of 20, with the number of picks matching the number of scatters you landed.
What rewards can the stone picks give during free spins?
Four possible rewards: extra free spins (up to 10 added), multipliers (up to 3x in Max), wild reels locking reels 2, 3 or 4 as stacked wilds, and extra wild symbols turning the deer, bull, or owl wild for the round.
Can you get stacked wilds on reel 3 in classic mode?
No. In classic mode only reels 2 and 4 can become wild reels. Reel 3 is only available as a wild reel in Max mode, which is one of the key upgrades.
What is the difference in symbol payouts between classic and Max?
Low-paying card symbols (10 through A) pay identically in both modes. Premium stone animals pay significantly more in Max, with the top symbol reaching 160x for five of a kind compared to 50x in classic.