Bubbles is a super simple, 5 reel, 10 payline slot from Novomatic. It doesn’t offer much in the way of features but watch out for the magic wilds that deliver re-spins with frozen wilds. Try and clean up, on all devices, from between 10p and £50 per spin.

The design in Bubbles is a little unusual, especially for a slot powered by Novomatic – rather than spinning, the symbols float up onto the reels like, well, bubbles! There are 7 different bubble symbols to look out for, each of which is edged in a bright colour – these work rather well against the plain black backdrop.

The most rewarding symbol is the orange bubble – land 3, 4, or 5 of these on a single payline and you’ll win a payout of 5, 20 or 25 times your total stake. Winning combinations can be formed from the right as well as the left.

Underneath reels 2, 3 and 4, you’ll notice a trio of multi-coloured bubbles – these are the wilds. They can float onto the reel above on any spin and turn 1, 2 or all 3 symbols on that reel wild.

Whenever a wild lands, you’ll also trigger the Re-spin feature and be awarded a re-spin with the wilds locked in place. The wilds will remain frozen in position until they form part of a winning combination. If another wild floats onto the reels during a re-spin, another re-spin will be added to your tally.

Bubbles has a fairly gentle feel as far as design goes – the visuals are pretty good for a Novomatic slot and the soundtrack has a slightly futuristic feel. After every spin, the bubbles are popped (and come with a satisfying popping sound) before the new symbols appear.

The volatility here doesn’t keep with the design as the variance is in the medium to high range. Think of Bubbles as a hot 90 degree spin rather than a delicate wash. This game is something of a departure for Novomatic which usually focuses on classic fruit machines.

They’ve done quite a nice job too. It is reminiscent of the NetEnt classic Starburst in that it centres on a single feature and bashes it for all its worth. The re-spins with wilds come along at regular intervals so you shouldn’t bemoan the lack of free spins too much.  Get lucky and land multiple wilds and you could clean up in this soapy-themed slot.