Dive deep beneath the waves in the hope of discovering a jackpot in Great Reef, a 5 reel, 25 payline slot from Pragmatic Play. The visuals may look a little primitive but there’s plenty of action on offer here courtesy of the bonus feature that awards up to 33 free spins with multipliers that can top 6x. Play from between 25p and £125 per spin.

The coral-filled ocean floor is the setting for Great Reef – joining the bubble-style playing card symbols is a selection of aquatic life. Look out for a starfish, seahorse, a stripy butterfly fish and a turtle. The most rewarding symbol is the shark – land 2, 3, 4 or 5 of these on a payline for a payout of 5, 20, 75 or 500 coins.

The grizzly old sea captain is the game’s wild – the skipper won’t award you any payouts but he can help create winning combinations by substituting for all other symbols apart from the scatter.

That scatter is the oyster – land 3 or more of them anywhere on the reels and you’ll trigger the Pearl Hunter Bonus feature. Here you’ll be awarded up to 33 free spins. That on its own is impressive enough. Throw in a multiplier of up to 6x and the feature becomes a very interesting proposition.

Great Reef is a fairly simple slot – you’d be hard pushed to call it a thing of beauty. The cartoon visuals are solid enough though. It’s a similar story as far as features are concerned. There isn’t a great variety of extras. It’s all about the free spins round. It’s not the easiest to trigger but the potentially large number of free spins on offer plus the multiplier make it worth waiting for.

We found the volatility to be higher than some Pragmatic Play slot. We’d put it in the medium to high category. We wouldn’t describe Great Reef as a great slot – it’s a perfectly solid offering though. If you’re after some simple to play action that delivers a volatile kick or two, then this underwater offering fits the bill. Alternatively, Playtech’s Great Blue has a similar theme and is just superb.