Volts and Bolts is a WMS Gaming-powered slot with 5 reels, 3 rows and 50 paylines. Available to play on all devices from 50p to £45 a spin, you are taken to Dr Volts’ laboratory which is charged with electricity. You will see robot heads lock and link together for 5 spins with robot symbols transforming into bigger robot shapes for big wins. There are fixed jackpots to be won up to 750 times your stake as well as a Mad Scientist Free Spins feature where you get 12 free spins and up to 100 times your stake as a cash prize.

Set in Dr Volts’ laboratory, Volts and Bolts has cartoon style graphics and looks superb – symbols including A, K, Q and J playing cards, diaries, wrenches, voltmeters, brains and the Volts and Bolts symbol. The latter is the most rewarding giving you 5 times your stake for 5 on a payline. The battery symbol is the wild and replaces all symbols bar the scatter/bonus symbols – the Mad Scientist is the scatter with the Robot the bonus symbol.

Volts and Bolts comes with a Robot Lock It Link feature which is triggered when 6 or more Robot bonus symbols land on the reels – you will then get 5 spins with each Robot remaining locked in place. When these combine with other robots, the robot symbol will change into large robot shapes.

When 4 or more reel positions are covered by a robot shape, you will activate the High Voltage Spins feature – the robot shape then becomes an Electricity Reel. If 4 to 6 positions are covered with a robot shape, you can win the Minor or Mini Bonus – or up to 100 times your stake.

If you cover 10 positions, you can win the Major, Minor or Mini Bonus – or up to 150 times your stake. If you cover 12 to 15 positions with Robot shapes, you can win the Grand or Major Progressive – or up to 750 times your total stake! As mentioned above, you have 5 spins in which to cover as many positions as possible.

Finally, there’s the Mad Scientist Free Spins feature which is played when you get 3, 4 or 5 Mad Scientist scatter symbols anywhere on the reels – as well as 12 free spins, you will receive a cash prize, 3, 4 or 5 scatters will give you 2, 15 or 100 times your stake respectively.

Volts and Bolts is a very entertaining slot with the bigger wins coming from covering reel positions with robot shapes – if you fill the entire reel set, you’ll win a cool 750 times your stake! I found it to be a medium variance title with good wins throughout – just hope the electromagnetic power locks and links robot heads for huge wins. If you like the theme, Yggdrasil Gaming’s Alchymedes or Novomatic’s Reel Attraction are recommended.