A fish tank full of friendly looking creatures is the centrepiece to Aquarium, a simple 5 reel, 30 payline slot from Playson. This game might look gentle and soothing but don’t be fooled, it’s a seriously volatile game. Play on all devices from between 15p and £90 per spin.

Playson slots are usually good-looking affairs and that’s certainly the case with Aquarium. A bubbling, watery backdrop filled with coral and plankton forms the backdrop to the reels – those reels are filled with 7 different standard fishy symbols. The best of these is the smiling sea horse that awards 166 times your total stake if you land 5 of them in the same payline.

Helping you to create winning combinations is the goldfish, who is sporting a rather fine Elvis-style quiff. This wild symbol doesn’t offer any payouts in its own right but does replace all other symbols bar the scatter when it lands on the middle 3 reels.

There is some serious money on offer from the starfish which is that scatter – land 3, 4 or 5 of these anywhere on the reels on the same spin and you’ll pocket an award equal to 5, 50 or 500 times your total stake!

If you’re looking for bonus features, free spins, tumbling reels, pick ‘em rounds or cash trails then you’ve come to the wrong place. You won’t find anything here – there’s precisely zero on offer on the features front.

Just as well then that the base game offers some volatile action – expect plenty of spells when all the fish do is bob and smile but don’t trouble the cashier. Land a winner featuring the sea horse or scatter and the coins can quickly mount.

Aquarium is a nicely designed slot. The imagery is bright and bold and there’s a tranquil soundtrack playing as you spin. If you’re after plenty of variety and features, then you’d be advised to look elsewhere – I recommend Novomatic’s Jewels of the Sea and NetEnt’s Secrets of Atlantis.