First up, you can put that Periodic Table away because knowledge of minerals isn’t required here. But it’s worth knowing what everything does and how it all works.

There’s a Wild symbol that substitutes for all symbols, bar Scatters. Nothing new there.

What is somewhat different is that the Bar symbols can be mixed and matched. So different types of Bar symbols can help form winning combinations as long as they’re in the right position.

That however is small fry compared to activating one of the three bonus features.

Two or more red-bearded dwarfs activate the Treasure Blast. Down in the mines you’ll look to go as far as possible and the special reels down here in the mines will hopefully allow you to keep following the golden arrows. If the reels land on ‘collect’ it’s back to the fresh air and you’ll bank whatever you won, aided by the relevant multiplier.

If the two or more dwarves are grey-haired, then it’s the Royal Flush you’ll be playing. You’ll get three special spins and what you want to see pop up are gold and silver multipliers.

Lastly, there are the free spins. Activated by getting 3, 4 or 5 Free spins symbols, the big advantage here is that symbols appear stacked and therefore your chances of big winning combinations are increased.

The real, real gold on offer however is the Progressive Mega Jackpot. How much can you win? The clue is in the word ‘Progressive’ so there really is no limit.