123 Boom! Slot Review

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71% Rated

Graphics - 68%

Gameplay - 73%

Bonuses - 68%

Value - 72%

Whizz hot?

  • Thematic visuals
  • Juicy 14,727x top jackpot
  • RTP is good
  • Explosive Wins

Whats not so hot?

  • No traditional free spins

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Game information


123 Boom!











123 Boom! is an online slot from 4ThePlayer. The real money slots studio is an ambitious studio that seems intent on making it big.

The reel structure of 123 Boom! has 5 reels, 4 rows, and a total of 1,024 ways to win. At a glance, it might not look appealing but there’s a twist in the Slot Slider Feature. You can choose from two different payout modes; Slide Spin or Top Spin.

In the Slide Spin mode, the reels spin from right to left and pay from left to right. In the Top Spin mode, they spin from top to bottom and pay from bottom to top. It’s more of a gimmick than a real feature, yet it’s interesting regardless.

Cascades or Explosive Wins is the beating heart of the slot machine’s mechanic. When the winning symbols explode they disappear from the reels. Moreover, new symbols will then drop in from the top to form new winning combos.

The Hit Rate is around 30% which guarantees a payout on every 3rd spin, or so. The jackpot is 14,727x (£736,350) your stake which is excellent. Jackpot hunters pay attention because this one is especially for you. The betting range of 123 Boom! is £0.10 to £50 per spin. Players with small and big budgets can play it.

123 boom slot by 4theplayer

RTP & Symbols

123 Boom! slot has an RTP of 96.40% and it’s a medium to high variance online slot. 123 Boom! is a video slot with a classic pirate theme, yet it doesn’t do much innovations-wise. There aren’t any card ranks, thankfully, so the pirate vibe is as strong as it could be. The symbols on the reels are doubloons, treasure chess, pirate flags, and even a few actual pirates.

It’s a good line-up of symbols and two pirate ships flank the reels. As a result, it juices up the pirate experience. The Wild symbol is the cannonball and it completes winning combos. When there are no cannonball wilds. The Wild then slides in the spin’s direction until a winning spin occurs.

As a slots studio for real money, 4ThePlayer does not release its casino games to the USA casino online market. That’s the job of RealTime Gaming and Betsoft Gaming. Recently, the slot machine studios released games like Miles Bellhouse and the Gears of Time and Witchy Wins.

123 boom slot by 4theplayer

Bonus Rounds

Bonus Feature With Sliding Wilds

Once you manage to collect 3 or more Scatter symbols. The mechanic triggers the Bonus Feature that starts with some Sliding Wilds. Basically it adds a number of Wilds to the board. This will improve your winning chances until you run out of Scatters to fire.

Extra Scatters prolongs the feature. You can get up to 50 sequences in a single go this way. All this bonanza also comes with a progressive win multiplier. It starts at 2x when you first get the feature underway. However, it increases by 1 each time you receive a payout. Therefore, the multiplier value can reach epic proportions on each winning cascade.

Now, the hit frequency of the bonus is quite steep as it carries a hit rate of around 200 spins. Needless to say, you’ll have to grind out the feature.

123 boom slot by 4theplayer


123 Boom! is an innovative slot with a lot going on beneath its rustic exterior. It builds on the classic pirate theme which already has a legion of fans us included. The audiovisuals are of a sky-high quality and there is no card ranks insight. We reckon 123 Boom! is one of our better pirate slot reviews lately.

The top jackpot of 14,727x is reason enough to keep you spinning the reels. We advise discretion as the slot carries a medium to high variance tag. The downside is it doesn’t have a free spins feature. Suppose it further adds to the game’s allure and innovative streak. The Bonus Feature however comes close enough.

As long as the scatters keep on popping up you’ll keep on receiving Sliding Wilds. Suffice to say, if you have a lucky streak the feature can go on for a while. We heard of cases where players scored up to 107 explosions on one spin. More importantly, 123 Boom slots has a progressive win multiplier that increases every time you strike a winning cascade.

The last bit puts 123 Boom! surprisingly close to many Megaways slots. Even though the setup is significantly smaller. The key to the big wins lies solely with the Slot Slider Feature. Since the feature allows you to choose the direction your reels will spin and pay from – an innovative streak indeed. It doesn’t affect your style of play though. But, it gives you something to nibble on when you start to play.

Another online slot game from the same studio is 2 Gods Zeus vs Thor. It offers up to 2,048 ways to win. A jackpot of 15,360x and Free Spins with big multipliers.

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