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Big Bang Boom

Review, Demo Play, Payout, Free Spins & Bonuses

Big Bang Boom is an online slot game made by NetEnt. It offers players between 256 and 10,000 paylines over four reels, high volatility and an RTP of 96.07%. It’s... bright and bold and has bonus features including free spins and super bombs.

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  • Expanding reels with a huge number of paylines
  • Super bombs bonus
  • Avalanche bonus feature
  • Free spins feature
  • This is a highly volatile slot
  • No wilds or scatter symbol

Big Bang Boom Slot Review

3, 2, 1! The newest video slot exploding out of the NetEnt studio is Big Bang Boom. The colours are neon, the game grid is expanding, and the bonus features are fiery, all leading up to a possible total win of 4300x.

Big Bang Boom’s Theme and Graphics

The backdrop of NetEnt's Big Bang Boom  slot is a brick wall covered in graffiti and some of those ads for piano lessons with rip-off strips. The game symbols are neon bright and have an anarchic, sort of spray-painted look, with smiley faces, hearts, crowns and butterflies. The music also has an edgy vibe that adds to the alternative chaotic feel of the game perfectly. There’s not a strong theme holding the game together as such, but what is there works very effectively to create an immersive playing experience.

Big Bang Boom

RTP and Variance

Big Bang Boom has a variable RTP rate, but the baseline figure is 96.07%. It has high volatility and a max win of 4300x. 

How to Play Big Bang Boom

Starting to play the Big Bang Boom slot is a cinch, but there are a few things to be aware of. Here’s a quick guide to getting started:

  1. Hit the purple spin button to start the reels.
  2. Use the + and - buttons to raise or lower the stake. 
  3. Check out the game rules and paytable by clicking on the ‘i’ symbol at the top of the screen.
  4. Adjust the sounds using the speaker icon.
  5. Play Big Bang Boom responsibly by setting yourself a time limit for your playing session and taking regular breaks.

How to Win at Big Bang Boom

Big Bang Boom has a slightly unusual set-up. It’s played initially on a four-reel, four-row game grid, but this can grow to an eight-row, ten-reel game grid that houses between a massive 256 and 10,000 paylines. The grid can only expand vertically, and wins are scored by matching at least three and up to four OAK symbols.

Top Symbols

As in most slots, the winning symbols in Big Bang Boom are divided up into low and high payers. The low payers are J-A, which give you up to 0.2x the bet for matching four OAK. The high-paying symbols include purple hearts and yellow crowns, and they have a payout potential of up to 1x.

Betting Limits

Bets in the Big Bang Boom slot start at 0.25.

Max-win 4,300x
Volatility High
Top RTP 97.07%

Big Bang Boom Bonus Features

Big Bang Boom is home to plenty of bonus features, from free spins to exploding bombs.

Super Bombs

When new squares on the grid become visible, they can reveal up to seven different types of bombs, which can all explode in a slightly different way to reveal an extra win multiplier and trigger the Avalanche feature.

  • Vertical: when vertical bombs explode they remove the top and bottom symbols next to it.
  • Horizontal: removes symbols to the left and right of it.
  • Diagonal: removes adjacent symbols at the corners of its position.
  • Plus-pattern: removes symbols in a cross-shaped pattern.
  • Omni-directional: removes all adjacent symbols around its position.
  • Cluster: will reveal three to five random positions.
  • Persistent: this bomb can only be triggered during the free spins bonus not the base game.

Avalanche Feature

The Avalanche feature can be triggered by a winning way or a bomb explosion. Winning symbols will disappear from the board and new symbols will fall on to the grid. This will carry on until no more wins can be scored. If you love games with a cascading wins feature, then you might also love Reel King Megaways from Inspired Gaming, which provides up to 117,649 ways to win.

Big Bang Boom Review Summary

Big Bang Boom is another hit, as you’d expect from a studio like Net Ent. It doesn’t have such a strong theme as some other slots, but it’s tightly tied together with the explosive bonus features. However, we have to admit we were surprised at the win potential, which is not as bountiful as that provided by other slots from this maker.

Bombs Away for Free Spins And More!

Gameplay in Big Bang Boom sure is explosive, and the expanding grid is a quirky feature that makes this slot stand out from the crowd.

Disclaimer: Big Bang Boom trademark / license is owned by Net Ent. This site is not endorsed by Net Ent.

Slot Data
Slot Name: Big Bang Boom
Software: Net Ent
RTP: 97.07%
Volatility: High volatility
Paylines: 4
Reels: 4
Min Bet (all lines covered): £0.25 (GBP)
Max Bet: £100 (GBP)
Top Win: 4300
Features: Multiplier, Free Spins, High volatility, Cascading, Expanding Reels, Reel Modifiers
UK Available in UK? Yes. Net Ent have a UKGC license and are allowed to offer their games at UK licensed casinos.


Does Big Bang Boom have a free spins feature?

It sure does! Free spins aren’t triggered by a scatter symbol but will appear when the game grid reaches its maximum height of ten reels, giving you six free turns. During the free spins round, only vertical, horizontal, diagonal, plus-pattern and persistent bombs can land on the reels, along with prizes worth x1. They’ll all remain on the reels until the round finishes. Any bomb explosions that go over a prize will add a win multiplier of at least x2, going up to x2048.

What is the Treasure Prize feature in the Big Bang Boom slot?

If new positions are uncovered on the game grid, then this can reveal Treasure Prizes, such as the Super Bombs mentioned above. New positions might become visible during free spins or the base game. During the free spins round, you might also reveal a prize of a 16x, 32x or 64x or a free spin.

Who is the maker of the Big Bang Boom slot?

Big Bang Boom is made by NetEnt. They are a top slot maker who have produced some of the best-known titles at online casinos in recent years, from Gonzo’s Quest to Starburst. Their output is very varied, and you’ll find slots themed around gorillas (Gorilla Kingdom), TV tie-ins (Narcos and Vikings) and even heavy metal (Guns and Roses). They’re all available to play here at Slots Temple, along with the hottest slots from other makers.

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