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300 Shields Extreme

300 Shields Extreme

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We reviewed SG Digital and NextGen Gaming’s bloody and rewarding 300 Shields Extreme online and mobile slot machine.

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300 Shields Extreme Review

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Slot Overview

slot machine icon Name

300 Shields Extreme

chef hat icon Released


customer icon Provider

NextGen Gaming

platform icon Platform

Desktop, Mobile

Slot Details

RTP icon RTP


Volatility icon Volatility


Jackpot icon Jackpot

17,770x bet

paylines icon Paylines


Reels icon Reels


Rows icon Rows


Min. bet icon Min. bet


Max. bet icon Max. bet



Game Rating


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Sound Effects

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Loading Time

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Game Features

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Big Win Potential

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Mobile Gaming

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The Overall Rating of this casino game was calculated based on our research and data collected by our casino games review team. Learn more about Our Review Process

Game Review

300 Shields Extreme Slot

Grab your sword, fix your shield and prepare to go to war on the reels of NextGen Gaming’s 300 Shields Extreme slot machine. Bring Warriors to heel as you use them to boost your wins with up to x300 Warrior multipliers during the slots Free Games bonus round! To the victor goes the spoils and you could win up to 17,773x your stake today!

Theme and Background

This NextGen Gaming slot game is based on the infamous Battle of Thermopylae of 480 BC! The ancient battle was between more than 7000 Greek allied warriors, led by King Leonidas of Sparta, and close to 150,000 Persian warriors under the authority of Emperor Xerxes!

The legend of the 300 springs from the betrayal of the Greeks by a local man named Ephialtes who let the Persians know of a secret path into the Greek mainland.

King Leonidas and 300 of his most fearsome warriors held the line against the Persian army to allow the balance of the Greek warriors to fall back and defend their homeland against the encroaching enemy.

Game Mechanics

300 Shields Extreme offers players a chance to win up to 17,773x stake across 25 fixed paylines. You can set yourself up for greatness by choosing to stake up to €12.50 per spin, which could see you win more than €222,000!

The standard reel wins are worth fighting for too with 5x Warrior symbols offering up 1000x your stake and 5x Scatter symbols paying out a staggering 2500x stake plus triggering the Free Games feature!

Bonus Features

The setting of 300 Shields Extreme is a peaceful Grecian landscape which much like the historical setting will soon be drowned in shouts and clashing steel.

The reels are populated with a screaming warrior Wild and a bloody Shield as the Scatter. The high-value symbols comprise an Archer, a Longboat, a Sword and a volley of Arrows. The slot machines low-value symbols are the fairly common A, K, Q, J, 10 and 9 symbols but battle-worn and stuck with arrows in keeping with the theme.

The soundtrack for 300 Shields Extreme is surprisingly good. It is a rich driving piece of music with drums, trumpets, violins and vocal overlays that put in on par with any big period piece score.

Free Games

Landing three or more Scatters on the reels will trigger the Free Games feature. Begin the round with 5 free games and an x2 Win Multiplier on all Warrior symbol winning combinations.

Claim more Free Games and level up your Warrior Win Multiplier by collecting Shield symbols on the reels:

  • 2+ Shields: +5 Free Games and Warrior wins get x5 multiplier

  • 6+ Shields: +5 Free Games and Warrior wins get x25 multiplier

  • 12+ Shields: +5 Free Games and Warrior wins get x300 multiplier

Once the max multiplier of x300 has been achieved any three or more additional Shield symbols will add +5 Free Games to your available total!

Buy Pass Feature

Some casinos choose to offer the 300 Shield Extreme Buy Pass option. This feature allows you to skip the spins and buy your way into the Free Games fray. The cost of this feature is set at 60x your current stake. Given the potential to unlock up to x300 multiplier, the question is whether or not you believe the gods smile upon your quest this day?


Some bow before the gods and those who shake their fists at them, if you fall into the latter camp, then the Gamble feature is for you. Take the treasures you have wrested from the reels and bet it all on a 50/50 Red/Black bet or test the fates by selecting a Suit.

If you win on a Red/Black bet your stake will be doubled, but if you win a Suit bet, you will receive x4 your stake in return! However, lose the bet and you return to reels empty-handed, but ready to spin again!

Play 'On The Go'

SG Digital and NextGen Gaming have created a fantastic mobile product with smooth gameplay, high-quality graphics and a player-first approach to controls. That allows you to choose between various platforms where you can play the game. The menu offers four choices of Spin button location so you can play in a manner that best suits your needs.

CasinoWow Game Verdict

300 Shields Extreme is a rewarding slot machine with massive win multipliers, high volatility gameplay and a maximum win of up to 17,773x stake. It does, however, suffer a little from an outdated set of graphics and spins animations. That being said, it is great on mobile and even offers you the option to set where you’d prefer the spin button to be, which is immensely useful depending on your circumstances.

You may be interested in NextGen bonuses. They will boost your starter bankroll and give you more freedom to play and gain more experience.

Anything incorrect or missing?

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Game Review by Niki

CasinoWow Contributor

Hey, there! It’s Niki! My power is in playing online casino games and knowing what’s best in each. I help in the creation of the most reliable casino guides to support players and get them well-prepared for their gambling time online. I am dedicated to helping my Wow Team stay on top of the game as being the SEO guru of CasinoWow!

300 Shields Extreme FAQs

What is the RTP/volatility of this casino game?

This is a high volatility casino game with an RTP of 95.3%.

How many paylines are available on this game?

A total of 25 paylines can be triggered when playing 300 Shields Extreme.

What is the maximum win on this casino game?

A maximum win of more than 17,000x is waiting to be won on this slot.

Does this game have bonus features?

Yes! Enjoy great special features such as free spins, the Buy Pass feature, and the Gamble feature.

Play 300 Shields Extreme for Real Money

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300 Shields Extreme

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