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123 BOOM Slot

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123 BOOM is an online slot developed by 4ThePlayer that features 1024 Winning Ways. The game comes with features like cascading reels, free spins and increasing multipliers. The RTP of ...this medium/high variance slot is 96.44% and its top prize is worth 14,827x.

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  • Top prize worth over 14000x
  • Unlimited free spins & unlimited multipliers
  • Up to 107 wins can occur in one spin


4ThePlayer brings players another unique and innovative online slots game with 123 BOOM.

This pirate-themed slot features symbols that move in unusual ways, explosive reels and unlimited bonus features.

123 BOOM uses the classic 4ThePlayer formula of taking a standard slot format and turning it on its head.

The Slot Slider is something we haven’t seen in any other slots but the game still retains a more traditional 1024 Ways to Win format so things don’t get too disorientating.

Theme and Graphics

123 BOOM from 4ThePlayer is set on the high seas – literally!

Behind the transparent set of reels, you see the ocean from a top-down view with waves billowing and two warring ships on either side of the game.

Symbols include all sorts of pirate paraphernalia, like maps, pistols and gold coins – and the main characters in this adventure are two ship captains.  

123 BOOM Slot

How to Play

  1. Once the game loads, click on the Hamburger menu in the upper left-hand corner of the screen for the game menu.
  2. In this menu, you can toggle sound options, review the paytable, see the in-depth rules and access your game history.
  3. Decide how much you’d like to wager. Bets between £0.10 and £1 are available.
  4. Hit the Spin button!

123 BOOM RTP and Variance

4the Player’s 123 BOOM slot has an RTP (return to player) of 96.44%.

It’s also a medium-to-high variance online slot. So, while you’re spinning the reels on this game, you can expect to see fairly frequent wins rather than having to wait quite a while in between payouts like you would in a highly volatile game.

How to Win

This is a 1024 Ways to Win online slot, so winning combinations are made by landing three or more matching symbols on adjacent reels. Then, when you land a win, the Explosive Wins feature is triggered, where winning symbols explode and new symbols shift into their places.

Up to 107 Explosive Wins can occur on a single spin.

The game has a unique Slot Slider feature, which depends on the orientation of your device:

  • Slide Spin: for desktop devices and a landscape orientation, where the symbols move in from the right rather than from the top if you’re playing on desktop (and wins pay left to right).
  • Top Spin: for mobile devices and portrait orientation, where the symbols will fall from the top down but wins pay from the bottom to the top.

So, on your mobile device, it might take some getting used to. However, after a couple of spins, it should make sense!

Max-win 14,727x
Volatility Medium
Top RTP 96.44%

Free Spins and Bonuses

When you land three or more bonus symbols on the reels, you’ll be taken the Cannon Bonus. There is no actual set number of free spins that you’ll receive; as long as you keep collecting cannon balls, you’ll keep earning spins.

The game starts with a 2x multiplier, which increases every time you hit a win. Again, there’s no limit to how high this multiplier climb.  

123 BOOM Review

The winning potential in this game is okay, as you’re never left waiting around very long between wins. So, while it is a medium/high volatility game with an impressive 14827x top prize, it can feel like you’re having a more medium-variance experience.

Due to this feature, the game boasts that up to 107 wins can occur in a row on any spin. There are some very interesting gameplay features in this slot, so it fits in well with other 4ThePlayer games like 6 Wild Sharks and 1 Left Alive.

Disclaimer: 123 BOOM trademark / license is owned by 4ThePlayer. This site is not endorsed by 4ThePlayer.

Slot Data
Slot Name: 123 BOOM
Software: 4ThePlayer
RTP: 96.44%
Volatility: Medium volatility
Paylines: 1024
Reels: 5
Min Bet (all lines covered): £0.10 (GBP)
Max Bet: £50 (GBP)
Top Win: 14727
Features: Wild Symbol, Scatter Symbol, Multiplier, Free Spins, Medium volatility, High volatility, 5 Reels, Cascading, Increasing Multipliers
UK Available in UK? Yes. 4ThePlayer have a UKGC license and are allowed to offer their games at UK licensed casinos.

123 BOOM Slot FAQs

What is the RTP of 123 BOOM?

124 Boom has a payout percentage of 96.44%, which is about average for online slots today.

What is the biggest win available on 123 BOOM?

The biggest win you can land while playing 123 Boom is 14,827x your stake.

How volatile is 123 BOOM?

123 BOOM is a medium/high variance slot, but plays more like a medium volatility game as wins occur more frequently than you would expect from a highly volatile slot.

How does the Spin Slider feature work?

The Spin Slider works in two ways. With Slide Spin, the symbols move from right to left and wins pay from left to right. With Top Spin, the symbols will fall from the top down but wins pay from the bottom up.

Is there a free spins bonus in 123 BOOM?

Yes, landing three bonus symbols will trigger the free spins round where every cannon ball you collect gives you one more free spin. There’s no limit to the number of free spins you’ll receive and multipliers increase for every slide that occurs.

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