Take a trip to the polar icecap in Frozen Diamonds, a 5 reel, 20 payline slot from Rabcat. Played using a tumbling reels game engine, it comes with a bonus feature where extra wilds are added to the reels during each of your free spins. Play from between 20p and £40 per spin.

Visually, Frozen Diamonds is rather nicely done. Joining the lower value playing card values are a selection of gemstones. 5 of the orange diamond will get you a payout of 1,000 times your line bet. Likewise, the multi-coloured star symbol which is the game’s wild.

The visuals in Frozen Diamonds have a decidedly chilly feel – all of the symbols are enclosed in miniature blocks of ice which explode when they form a winning combination. A payout is made, then those successful symbols are blasted away and replaced by the ones directly above. The blasts and symbol drops continue until there are no new winning combos on show.

If you’re lucky enough to land 3 consecutive symbol blast wins you’ll win either 5 or 10 free spins (this figure is decided at random). On every first fall during the free spins, 2 or 3 wild symbols will be added to the middle reel. If you get a winner on your second symbol fall, 1 extra spin will be added to your total.

You’re guaranteed to have 3 wilds on the middle reel for this free spin. Any wins that you make on this extra free spin will be boosted by a 2x multiplier and doubled.

The action rattles along at a brisk pace thanks to the symbol drop feature – the best winning opportunities come via the free spins though where the extra wilds and potential doubling multipliers can quickly get the cashier flowing. The game plays out to an atmospheric soundtrack which matches the slightly mysterious feel of the game. Combined with the cracking ice that accompanies each successful spin, it all works pretty well.

The gameplay in Frozen Diamonds is pretty simple – this slot is all about the symbol drops. If you like games with this feature, then this polar adventure should leave you more than satisfied. The free spins weren’t the easiest to trigger but the wait often proved worthwhile though.

Expect some cold spells when the coins can quickly fade away. Get lucky with the bonus though and these icy diamonds can be very rewarding. If you like the symbol drop concept, NetEnt’s Gonzo’s Quest uses Avalanche Reels which is similar and proves very rewarding in the feature as a multiplier up to 15x can apply!