Crystal Furnace

Intro

Screenshots

RTP and variance, or volatility, are two primary factors slot players should consider before they spin the reels. Standing for return to player, RTP figures are given as a percentage, indicating a rough estimate of the expected payout rate over an extended period of time.

Anything above 96% can be viewed as a decent rate, and Crystal Furnace’s 96.56% belongs in this category; this means that on average, this slot will payout £96.56 for every £100 wagered. Before you take this figure as gospel, bear in mind that it’s based on millions of spin simulations, and any one session can deviate significantly from this number.

That’s where volatility comes into play. Volatility is what makes any casino game worth playing, allowing for fluctuations in RTP rates in both directions. If a slot has a low volatility rating – like Crystal Furnace – then it tends to pay out small amounts at frequent rates. High volatility slots will do the opposite, so are less suited to players on smaller budgets.

In terms of gameplay, we enjoy the simplicity of Crystal Furnace, which makes excellent use of gem-styled imagery made popular by games such as Bejewelled Blitz. No wheels have been reinvented on the standard 5×3 grid, but the win-both-ways payline structure constantly keeps players in the hunt for cash prizes.

If you’re looking for a slot replete with bonus features, Crystal Furnace probably won’t be what you’re after. There’s just the one bonus element to this slot, but it’s a good one: when the wild hammer symbol appears on reels two, three and four, it will expand to fill the reel while up to three re-spins play out. The reel will retain its wilds for the duration, and this bonus will be triggered again if another hammer appears in the right place.

Like all modern casino games, Crystal Furnace was built on HTML5 technology, which means it’s primed and ready for mobile gameplay. Whether you prefer accessing your online casino through your mobile browser, or via a dedicated native app, you’ll be able to step into the heat of the furnace and carve out the treasures within.

There’s a real ominous quality to the design of this slot, which creates a brooding, bubbling atmosphere that looks and sounds fantastic. In the background, you’ll hear the slow and rhythmic beating of swordsmith tools, and the crackling of fire as gems and crystals are forged into existence – it reminds us of Sauron and Saruman’s summoning of the evils of Middle Earth in The Lord of the Rings.

The gems themselves come in all sorts of shapes and colours: the rubies, amethysts, sapphires and emeralds all pay out at 50x the bet; the lucky 7s at 500x; and the Bars at 1,500x, which represent the highest paying symbol. When the expanding wild lands, the soundtrack picks up the beat as the wilds set into a continuous hammering motion.