Games developer Thunderkick has headed into space for Flux, another lavishly designed 5 reel, 15 payline slot. This one comes with stacked wilds and three types of bonus games featuring free spins, extra rows and the chance to win both ways. Stakes range from between 10p and £100 per spin.

The Flux in the title is in fact a river of crystals which flows through an imaginary universe, radiating energy. This river features eight brightly coloured floating shapes as symbols as well as a Wild which substitutes for everything apart from the Bonus symbol.

The Bonus is the key that opens up the feature round where the biggest wins are on offer. Find 3 or more Bonus symbols anywhere on the reels and you’ll trigger the Bonus feature where you’ll be given 3 choices.

With 3 Bonus symbols, you can pick from 16 free spins with the win both ways (paylines from right to left as well as left to right) active, 12 free spins with 7 rows on the reels instead of the usual 4 or 8 free spins with win both ways and the extra rows.

4 Bonus symbols and the choice is 32 win both way free spins, 24 free spins with the 3 extra rows or 16 with both. Trigger the feature with 5 bonus symbols and you can pick from 48 win both way free spins, 36 free spins with seven rows or 24 spins with both.

As we’ve come to expect from Thunderkick games, Flux is a visual delight. The floating symbols are simple but beautifully effective. The animation is slick and the futuristic, ambient-style soundtrack perfectly matches the graphics. Flux has a similar look and feel to NetEnt’s Starburst. The features are slightly different but the two slots share a similar hypnotic quality.

On the variance scale, Flux is on the lower side of medium so there’s plenty of play to be had whatever the size of your bankroll. Thunderkick has created another beauty in Flux. It looks terrific as usual and the gameplay is simple but effective. It may not win you a life-changing payout but in terms of entertainment, Flux is up there with the best. If you prefer something more volatile, you should try Børk The Berzerker or Esqueleto Explosivo (also by Thunderkick).