Tempered Steel Slot Review

⭐ 7/10
Create by: Yggdrasil Gaming
Review by:
Posts by Michael White
Updated: November 29, 2025

Tempered Steel is a High volatile slot from Yggdrasil Gaming with an RTP 96.15% and up to x10000 maximum win. Play demo for free.

Tempered Steel Slot Demo

Release Date
2022-06-23
RTP
96.15%
Max Win
x10000
Volatility
High
Bet Range ($,€,£)
0.20 - 100
Number of Reels
5
Betways
20
Features
Bonus Buy, Fire, Pick Bonus, Respins, Stacked Symbols, Symbol Swap, Walking Symbols

Tempered Steel Slot Overview

When I load up Tempered Steel from Bulletproof Games, I step straight into a blacksmith full of lethal weapons and glowing kilns. The 5x3 grid with 20 paylines feels tight and focused, framed by heavy steel and chains with a furnace burning away under the reels. The whole thing is dark and steamy, which gives spins a tense, almost claustrophobic vibe that fits the weapon forging theme very well.

From the first few spins, I notice how active the base game can be. Three random features, Lock and Spin, Forge Your Weapon and Bonus Frenzy, keep things ticking as stacked wilds and extra symbols hammer the reels. Free spins come with climbing stacked wilds and are technically unlimited, though the game caps wins at 10000x the bet. It feels like a slot built for long, swingy sessions rather than quick hits.

Tempered Steel slot screenshot

Tempered Steel Slot Information

Tempered Steel runs on 5 reels, 3 rows and 20 fixed paylines, paying left to right from reel one with at least three matching symbols. The standard RTP sits at 96%, but there are lower versions down to 86%, so I always check the info panel first. Volatility is high, backed up by a max win of 10000x and a quoted hit frequency of 24.4%, with free spins triggering on average once in about 223 spins.

Symbols and Paytable in Tempered Steel

The paytable in Tempered Steel fits the molten metal setting. At the low end, card suits clubs, spades, hearts and diamonds show up as semi melted steel icons. Wins from them keep the balance ticking over but do not move the needle much. The higher paying symbols are all weapons, starting with a crossbow and two daggers, then stepping up through a hammer and a sword to the premium two headed axe at the top.

The wild symbol is a bald, bearded blacksmith holding his hammer high, while the scatter is molten steel pouring over a BONUS sign. Wilds substitute all paying symbols and can appear stacked, up to three positions high in the base game and five high in free spins. From my sessions, lining up stacked wilds with the axe symbols is where the paytable suddenly comes alive, especially when Lock and Spin decides to hold everything in place.

Symbols and Paytable

Symbol Quantity Payout
icon 1 Wild
5 x100
4 x8
3 x4
2 x0.2
icon 2 5 x40
4 x5
3 x2.5
icon 3 5 x15
4 x4
3 x2
icon 4 5 x10
4 x4
3 x2
icon 5 5 x8
4 x2.5
3 x1
icon 6 5 x6
4 x2.5
3 x1
icon 7 5 x5
4 x1.5
3 x0.5
icon 8 5 x5
4 x1.5
3 x0.5
icon 9 5 x4
4 x1
3 x0.2
icon 10 5 x4
4 x1
3 x0.2
icon 11 Scatter

Tempered Steel Slot Features

Tempered Steel packs three random features in the base game, which stop it becoming a simple high variance grind. Lock and Spin is the standout for me. The reels go into an extended spin and stacked wilds of three positions can land. If a stack covers a full reel, that reel locks while the rest respin. New full stacks also lock and the process continues until no extra stacked wilds appear, leading to some wild heavy screens.

Forge Your Weapon feels different, as I actually get to make a choice. Three hidden weapon symbols appear and I pick one, then extra copies of that weapon are added to the reels for the next spin. Hitting a full screen of one of the better weapons, especially the two headed axe, can be a proper adrenaline moment. It is a neat way to focus the game on one symbol for a shot at a chunky line up.

Bonus Frenzy is the third random modifier and it simply throws extra scatter symbols onto the reels for the next spin. On paper it is the least exciting of the three, but when I am hunting the bonus, any extra molten BONUS signs feel welcome. I have had runs where Bonus Frenzy fired back to back and handed me the free spins from what looked like a dead base game, so I would not write it off at all.

Free Spins in Tempered Steel

Free spins in Tempered Steel trigger when at least three scatter symbols land, and that number matters. Three, four or five scatters set the height of the climbing stacked wilds to 3, 4 or 5 positions. Under every reel sits a burning kiln which can randomly send up one of these stacked wilds during the feature. Each reel can only award one climbing wild, which moves up one step each spin until it leaves the grid and that kiln goes out.

Tempered Steel slot screenshot

Tempered Steel Slot Conclusion

After a fair amount of time in this blacksmith, I rate Tempered Steel as a dark, gritty high volatility slot with a smart mix of modifiers and bonus play. The random features keep base spins interesting, with Lock and Spin being my favourite when it floods several reels with stacked wilds. Forge Your Weapon adds a touch of involvement, while Bonus Frenzy gives that feeling of being one good spin away from the bonus.

The 96% RTP is solid, and the betting range from 0.20 to 100 per spin means most players can get involved, though the swings will not suit everyone. The unlimited style free spins with climbing stacked wilds fit the heavy hitting profile and line up well with the 10000x potential. For me, Tempered Steel is a strong choice when I am in the mood for a hot and steamy session where a single feature can change the whole balance.

Screenshots

Tempered Steel slot screenshot 1
Tempered Steel slot screenshot 2
Tempered Steel slot screenshot 3
Tempered Steel slot screenshot 4
Tempered Steel slot screenshot 5
Tempered Steel slot screenshot 6
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Tempered Steel slot screenshot 8
Tempered Steel Final Ratings
Theme & Symbols








Sounds & Music








Bonus Features








RTP (96.15%)








Max Win (x10000)








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FAQs About Tempered Steel

Can I play Tempered Steel free slot?

Absolutely! You can enjoy Tempered Steel for free on our website without registration. Our partner casinos of Yggdrasil Gaming also usually offer demo mode access.

Can I win real money on Tempered Steel slot?

Yes, to win real money in Tempered Steel, you'll need to create an account at a licensed casino site. You can then play for real and win up to x10000.

Can I play Tempered Steel slot on mobile phone?

Yes, Tempered Steel is fully optimized for mobile devices and runs smoothly on any devices.

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