Volts and Bolts

Maximum profit

Volts and Bolts

Provider: WMS Gaming

It's time for a little money-making mad science! Read our Volts and Bolts review to find out about the shockingly exciting features this SG slot offers.

Volts and Bolts Review

  • SG Digital’s Volts and Bolts brings weird science to life
  • Robot spins offer a chance to win one of four random jackpots
  • Enjoy two electrifying bonus rounds

SG Digital’s Volts and Bolts traps you in the creepy lab of a mad scientist. It’s up to you to find the treasures that lie hidden amongst the clutter!

Find out about wilds, scatters, jackpots, and bonus games! We’ll even tell you where to play Volts and Bolts. Read on for everything you need to know.

Volt and Bolts Information

ProviderSG Digital
  • Wilds
  • Expanding Wilds
  • Four Walking Wilds
  • Magic Wilds
  • Scatters
  • Free Spins​
Minimum Bet$0.50
Maximum Bet $50
Top Win5,000x (Grand Jackpot)



Find the best bonus for Volts and Bolts

Volts and Bolts Symbols and Payouts

We’re going on a journey filled with weird science and zapping good fun! The slot features 50 paylines across five reels, pays left to right, and is filled with shocking wilds, crazy scatters, and even a few rewarding jackpots.


There are four-letter symbols in this game, ranging from jack through ace. The higher value picture icons include the notebook, spanner, voltmeter, brain, and the game’s logo. There are also three specials: the battery wild, mad scientist, and robot scatter.

The symbols fit perfectly with the mad science and electrifying theme, reminding you that you’re in for a shockingly good time with every spin.

Volts and Bolts Symbols
Volts and Bolts Symbols


From letters to riches and notebooks to brains, here are the different symbols and paylines you’ll encounter in this game.

Volts and Bolts Paylines
Volts and Bolts Paylines

Volts and Bolts Min / Max Bets

The minimum bet across all lines is 0.50, and the max is 50. While not the biggest bet range we’ve ever encountered, it’s certainly broad enough to make this slot bizarrely good fun for new players and high rollers.

Volts and Bolts RTP, Volatility & Hit Frequency

The Volts and Bolts RTP is 95.63%, which might seem low at first glance.

Combined with its medium volatility and reasonable hit rate, you’ll still enjoy several frequent, smaller wins as you chase after big jackpots.

During the 500 spins test for our Volts and Bolts review, we managed to trigger the regular free spins four and the robot round five times.

While we didn’t hit the jackpot, we did manage to get a few significant multipliers.

Volts and Bolts Jackpot and / or Maximum Win

The highest wins in the game are available during the robot free spins bonus round.

You can win up to 750x your stake or one of four jackpots. The mini is worth 20x, minor is 100x, major is 2,000x, and the grand jackpot is worth a whopping 5,000x.

The game has an overall cap; players can only win up to 250,000 during any single session.

Volts and Bolts Features

For our Volts and Bolts review, we’re braving the lab of a mad scientist to bring you the latest information on this electrifying slot!

Whether you prefer volts, bolts, or shocking wins, we’ve got the info you need.

Wilds and Other Base Game Features


These wilds are electrifying, and we mean that literally. In the game, these symbols are represented by shockingly active wired batteries. They’ll serve as substitutes for all other icons, letting you zap bigger wins.

Volts and Bolts Wilds

Volts and Bolts Free Spins

The slot offers two bonus games. If three mad scientists fall on the reels, you’ll receive twelve free spins. Depending on the number of scatters, you’ll also receive 2x, 15x, or 100x your bet.

During the bonus, the middle reel will only have wilds and scientists. You can retrigger additional free spins by getting a combination of 3 or more scatters. The robot jackpot game can also be triggered during play.

Robot Free Spins

If you get a combination of six or more robots, you’ll enter the jackpot bonus round. The electrified bots will stick to the reels during the five free spins, as will any additional ones that fall.

Once your spins run out, the various icons will reveal values. Singles are worth 1x, doubles are 3x, and four or more will randomly pick a multiplier up to 750x. You might also get one of the four jackpots.

Graphics & Sound

Are you brave enough to explore this eerie lab? From skulls to potions and odd critters in jars, the game’s design keeps the crawls coming.

Even the symbols make you feel slightly uncomfortable, especially the bouncing brain and madly cackling scientist.

While the reels are still, the music is just a creepy loop. However, once you start spinning, your ears will be abused by a raucous cross between carnival music and something out of a horror film.

Brilliant sound design move, or a horrible mix of noise? You decide. Just remember to check your volume before you start playing!

Volts and Bolts

Other Slots to Play If You Like Volts and Bolts

Are you looking for mad scientists, eerie labs, and weird rewards?

Try Reel Attraction from Novomatic for a little crazy fun. Better yet, give Yggdrasil’s Alchymedes a try and enjoy bonus games, multipliers, and a much better mysterious and mystical soundtrack.

Volts and Bolts Review – Conclusion

Volts and Bolts is an entertaining slot with a few exciting features and the potential for significant rewards.

The design is fun, the gameplay is playful, and the hit rate isn’t all that bad, especially for a lower RTP game.

The soundtrack is the only downside to this slot. At times, all hints at an actual tune would get lost, especially during bonus game transitions.

If you’re going to spend a few hours on this game, mute it.