A slot called Stacks O’ Gold can mean only one thing – yes, we’re summoning up all the Irish luck we can and trying to find some treasure at the end of the rainbow. Created by iSoftBet it’s a 5 reel, 34 payline game that comes with expanding wilds and a free spins round where up to 3 reels can turn into sticky wilds. Play on all devices from 20p and £20 per spin.

A gentle rural scene forms the backdrop to the reels here – you’ll see bronze, silver and gold coins alongside horse shoes, pints of stout and green top hats. The best of the standard symbols is the gold four-leaf clover which will get you 1, 2 or 10 times your stake if you land 3, 4 or 5 in combination.

The pot of gold is the wild – it doesn’t offer any payouts in its own right but it replaces all other symbols bar the bonus whenever it lands. There are 2 main extras on offer in Stacks O’ Gold.

Free Spins feature – land the bonus (the Stacks O’ Gold symbol) on reels 1, 3 and 5 and you’ll be awarded 15 free spins. Hope to see plenty of wilds during the feature. Each time 1 hits, it’s collected in a meter. Once you have 6 of them, you’ll receive 2 extra free spins and reel 1 will turn into a sticky wild and remain that way for the rest of the feature.

Collect another 10 wilds and reel 3 turns into a sticky wild reel too and another 2 free spins are added to your tally. If you’re lucky enough to find another 10 wilds on reels 2, 4 and 5, then reel 5 becomes wild (and sticky) and 1 more free spin is added to your total. This is known as the Sticky Stacked Wilds Reels feature. Special Golden Wilds can trigger at random at the beginning of any free spin too. They can turn the whole of reels 1, 3 or 5 wild for the free spin that follows.

Some Irish-themed slots are completely over the top but the design in Stacks O’ Gold is a little more understated. The glossy visuals are nicely done and there’s a gentle harp-heavy soundtrack playing in the background. The sound and imagery might be gentle, but we found Stacks O’ Gold to be quite a volatile game.

We endured lengthy spells when the cashier went south. Get on a run with the sticky stacked wild reels in the Free Spins feature though and Stacks O’ Gold can live up to its name – to the tune of 868 times your stake on each spin/free spin. If you like the theme, Rainbow Ryan by Yggdrasil Gaming is a good option – if you like wild reels, Rainbow Wilds by Iron Dog Studio offers this as well as an Irish luck theme.