Yggdrasil and Bulletproof Games are hard at work forging fantastic gaming experiences in its latest release, Tempered Steel.

The 5×3, 20 payline slot is set in a fearsome forge, where a blacksmith is busy pounding out wins for players brave enough to handle the heat of his workshop.

During base gameplay, the blacksmith acts as a wild, while at random points his tools may heat up and drop into the barrel, causing steam to rise and a random modifier appear. This triggers either the Lock and Spin, Bonus Frenzy, or Forge Your Weapon features.

Lock and Spin will lock in any stacked wilds lock into place, and a respin occur. If any reel remains unlocked, an extra spin will be awarded.

The Bonus Frenzy feature adds more scatter symbols to the reels, increasing the chances of triggering the free spins. These are set on fire as they pass the reels.

Forge Your Weapon sees players smash through rock three times to reveal a weapon, which will appear stacked on the reels.

If three or more bonus symbols land on the reels it will activate the free spins mode, where five forges are lit upon entering the mode. On each spin, one or more of these forges may be activated, adding a wild to the reel above.

Depending on how many scatters land, a corresponding number of wilds will be added to the reels for the duration of the feature. Wilds will move up one step per spin in the bonus, and once all forges have been extinguished and all wilds have moved out of the reel the round ends. At the end of free spins, there is a chance that the forges will be relit, and the bonus will continue.

In jurisdictions that permit it, players can also buy their way into the bonus at a cost of 100x their stake.

Part of the YG Masters portfolio, Tempered Steel is powered by GATI, Yggdrasil’s state-of-the-art technology enabling partners to employ the preconfigured, regulation-ready, standardised development toolkit to produce consistently cutting-edge content followed by rapid distribution.

Stuart McCarthy, Head of Product & Programs at Yggdrasil, said: “Our collaboration with Bulletproof Games allows us to explore interesting themes and concepts and nowhere is that more evident than in this smithy-inspired Tempered Steel.

“The YG Masters program continues to blaze a trail for boutique studios and innovative concepts, and we’re very pleased to facilitate the latest Bulletproof release.”

Michael Bullock, Product Director at Bulletproof Games, said: “Tempered Steel is a fiery environment filled with stacked wilds, modifiers and more as we look to bring a unique product to the market.

“With the potential for forges to relight in the bonus, huge wins can await in the heat of the forge and we’re excited to see how players enjoy our product.”