300 Shields Slot Review

Join the warriors of ancient Sparta in a recreation of the famous Battle of Thermopylae in the 300 Shields slot. Created by NextGen Gaming, it’s a super volatile 5 reel, 25 payline title that comes with a cracking free spins feature. Once triggered, you’ll play 5 free spins with all wild warrior wins doubled. Collect shields for a retrigger and another 5 free spins, this time with a 5x multiplier. Subsequent retriggers take the multipliers up to 25x and then a mind-boggling 300x multiplier. With potential wins of 17,773 x stake per spin, find out more about this ancient Greek epic in our in-depth 300 Shields review.

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300 Shields Slot RTP, Details & Wager Limits

The setup in the 300 Shields slot is nice and straightforward. The action takes place on 5 reels, 3 rows and 25 paylines. To create a winner, land 3 or more matching symbols or wilds across a payline starting from reel 1.

Stake levels here start at 25p per spin, rising to a potential maximum of £12.50 per spin. Click on the coins in the settings tab and use the slider to adjust your stake. Settings is also where you’ll find autoplay. You can run up to 100 autospins if required here.

The 300 Shields RTP is 95.3% which is a little below average. However, The action here is extremely high variance. 300 Shields is a very volatile slot. The maximum win is large too. The most you could potentially win from a single spin is 17,773 x your total stake.

Theme – Audio & Design Features – inspired by the epic battle


The 300 Shields slot takes inspiration from the ancient Battle of Thermopylae where 300 Spartan warriors confronted a Persian army of much greater strength. With a Spartan theme, here’s a comic book-style to the imagery here which is simple but nicely done. Everything is clean and sharp.

Released way back in March 2015, you’ll hear a suitably drum-heavy, martial backing track while you spin, accompanied by blood curdling splats whenever a shield scatter lands. It’s all rather good.

Set against a backdrop of fields full of crops with marble temple building in the distance, the reels are made up of A to 9 royals, swords and arrows, ships and fighters. The fighter is the most rewarding symbol giving you 10 x your stake for 5 in combination.

The Leonidas symbol is the wild. This replaces all the standard symbols in a winning combination and pays 0.2, 1, 10 or 40 x your total stake if you land 2, 3, 4 or 5 across a payline. Those figures can get much bigger in the free spins thanks to the potentially massive multiplier boosts available.

There are fully optimised versions of 300 Shields available for all devices including desktop, tablet and smartphone. The classy cartoon design and simple gameplay are well suited to the small screen. We had no grumbles playing the 300 Shields mobile slot in comparison to the other versions.

300 Shields Bonus Features

There’s just the single bonus feature to concern us in the 300 Shields online slot. It has the potential to be an absolute corker though. It’s a free spins round where wild wins are doubled. Retriggers not only add extra free spins, they also increase the multiplier up to a maximum of 300x!

Battle Feature Free Games feature


Trigger the Battle Feature Free Games feature in the usual manner by landing 3, 4 or 5 shield scatter symbols anywhere on the reels on the same spin. You’ll pocket an award worth 5, 12 or 100 x your total stake.

You’ll also be awarded 5 free spins. Each time a wild warrior symbol makes up part of a winning combination, the payout is boosted by a 2x multiplier and doubled.

Each time a shield scatter lands during the free spins, the scatter is collected in a meter to the right of the reels. If you manage to collect 2 of them during your initial haul of 5 free spins, you’ll land a retrigger. Another 5 free spins are added to your total, this time with all wins that include the warrior wild benefitting from a 5x multiplier.

If you manage to collect 6 shields during the second round of free spins, another retrigger ensues. This time, there’s a 25x wild multiplier in play during this round of free spins.

Collect 12 shields and you’ll get a 4th series of 5 free spins. These come with an enormous wild multiplier which sends payouts rocketing by a massive 300x. Land 3 shields on a single free spin and you’ll get 5 more free spins at the current multiplier level. To summarise:

Shields Collected Multiplier Value Extra Free Spins
2 shields 5x multiplier +5 free spins
6 shields 25x multiplier +5 free spins
12 shields 300 x multiplier +5 free spins
Every 3+ shields Same as current multiplier +5 free spins

300 Shields Review Summary – a high variance favourite

The 300 Shields slot is a cult favourite that has become a huge hit with slots players due to the potential 300x multiplier. Not for the faint-hearted, the possibility of a 300x multiplier is not common at all so this is a unique game in that respect.

NextGen Gaming has kept things nice and simple though. The visuals aren’t exactly the height of HD sophistication but this was released in 2015. The gameplay is a basic as the design and again that’s no bad thing.

It’s all about collecting shield scatters in the Battle Feature Free Games feature which increases the multiplier and gives you additional free spins. As you might expect from a slot where the multipliers can reach stratospheric heights, the action here is extremely volatile so tread carefully. If you like the ancient theme and simple, high variance gameplay, 300 Shields has plenty to offer.

Since the initial release, NextGen Gaming has released 300 Shields Extreme which is more or less the same but with better graphics and a Buy Pass feature. Another option would be the Spartan King slot by Pragmatic Play which comes with 2×2 wilds that have a multiplier up to 25x.

300 Shields FAQs

What is the 300 Shields RTP?

The 300 Shields return to player rate is 95.3% which is a little on the low side compared to most slots (96%). It is highly volatile though so don’t be fooled.

What is 300 Shields max win?

The maximum win is 17,773 x your total stake from a single spin. Extremely volatile, the key to winning big is from the potential 300x multiplier during the free spins.

Is there a 300 Shields free spins feature?

Yes, trigger the Battle Feature Free Games feature for 5 free spins with a 2x wild multiplier. Collect shields to win extra free spins and increase the wild multipliers up to 300x.

Can I play 300 Shields for free?

Yes. You can play for free here at Online-Slot.co.uk. There’s the option to play on desktop (laptop/PC), mobile or tablet devices as desired.

300 Shields Slot Information

  • Game:
    300 Shields
  • Provider:
    NextGen Gaming
  • Type:
    Video Slot
  • Reels:
  • Paylines:
  • Stakes Range:
    25p to £12.50
  • Bonus Features:
    Yes (1)
  • Free Spins/Multiplier :
  • RTP %:
  • Max Win:
    17,773 x
Review by Chris Taylor

Review by Chris Taylor

Chris is a slots expert that has reviewed and played over 4,000 online slots. Having being in the iGaming industry for over 16 years, he knows how slots work, how bonus features are triggered and how the RTP and variance affect the gameplay.