Thunder Birds: Power Zones Slot Review

Expert Rating: 4 out of 5
Review by Chris Taylor
Last update 16th December 2021
Review by Chris Taylor
Last update 16th December 2021

Powered by Playtech, the Thunder Birds: Power Zones slot is played on an 8×8 grid with a Cluster Pays mechanic. Based on frying birds, it comes with collapsing/cascading wins and Power Zones which transform symbols. The main attraction is the Free Games feature where chicken multipliers up to 100x are in play. This can lead to 7,387 x stake max wins on each free spin. Find out more in our Thunder Birds: Power Zones review.

Thunder Birds: Power Zones Max Win
7,387 x bet
Type of Slot
Video Slot
Cluster Pays
Stakes Range
10p to £200
Bonus Features
Yes (3)
Free Spins/Multiplier
Max Win
7,387 x

Thunder Birds: Power Zones Demo

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Thunder Birds: Power Zones Slot RTP, Details and Wager Limits

Reels/Paylines: 8 reels + Cluster Pays

Stakes Range: 10p to £200 per spin

RTP: 96.42%

Max Win: 7,387 x stake

The Thunder Birds: Power Zones slot is played on a 8×8 grid with a Cluster Pays mechanic. 5 or more matching symbols vertically and/or horizontally anywhere will form a winning combination. The bigger the cluster, the bigger the win.

Playable from 10p to £200 per spin, some UK casinos may limit the max stake level at £50 or less. Most Playtech slot sites will offer the max limit of £200 though. Outside of the UK, there’s an Autoplay function and Turbo Mode for quicker spin speed.

The Thunder Birds: Power Zones RTP is 96.42% which is higher than the 96% online slots average. Most of that RTP is for the base game though. Variance wise, it’s in the middle. The hit frequency rate is 29.29% meaning nearly a third of spins will result in a win.

The maximum payout per spin is 7,387 x your total stake. The bigger wins will definitely come from in the free spins due to the multipliers that can reach 100x. It will take approximately 857,632 spins to win over 1,000 x stake.

Theme – Audio and Design Features – fry birds

Theme: Bird

High Value Symbol: Pink/Purple Bird (Bird 10)

Compatibility: Mobile, Tablet, Desktop


With a bird theme, the Thunder Birds: Power Zones slot is a colourful affair. Reminding me of the Angry Birds films, the cartoon-style graphics and bright and fun. The grid is represented by electrical lines which the birds sit on. When you get a win, the winning birds are fried by the electricity. The soundtrack is light-hearted.

On the grid you will see 10 different bird symbols. The pink/purple bird is the highest value symbol (bird 10) giving you 4.2 x your total stake for 25 or more in a cluster. That said, the lowest value symbols (there are 4 of them) pay 3.2 x stake for 25+ in a cluster.

Then there are 2 special symbols. You have the egg bonus symbol which triggers the free spins. In the free spins, you will see a chicken multiplier symbol (more details in the Bonus Features section below). There is no wild symbol on the grid.

Thunder Birds: Power Zones Mobile


Thunder Birds: Power Zones has been created by Playtech using the latest HTML5 technology. This allows for play on mobile, laptop, PC and tablet devices. The 8×8 grid is nicely presented and perfect for handheld devices. For the best visual experience, a larger screen is always better in my opinion.

Thunder Birds: Power Zones Bonus Features

The Thunder Birds: Power Zones slot has 3 bonus features. The collapsing wins, there’s a Power Zones element which transforms symbols. It’s all about the free spins though where you can get chicken multipliers up to 100x.

Collapsing Wins feature

When you land a winning combination, the Collapsing Wins feature is triggered. The winning symbols are removed causing symbols above them to drop down. This allows for new symbols to fall from above. It basically gives you another chance of forming a winning cluster. These collapses continue as long as you keep winning.

Power Zones feature

At the beginning of every spin, you will see 16 Power Zones in the middle of the grid. Each win fries a bird and adds 1 drumstick to the meter (to the left of the grid). Every 4 drumsticks increase the number on the meter by 1. If a number is on the meter when the reels stop collapsing, a symbol is revealed and the number on the meter goes down by 1.

A Power Zone forms on the position if the revealed symbol is on a grid position without a Power Zone. If this position is next to a Power Zone, the Power Zone area expands to include it. If the revealed symbol is in the Power Zone, every position transforms to that symbol. This is known as the Power Zones feature.

Free Games feature


The Free Games feature is activated when 4 or more egg bonus symbols land anywhere on the grid. The more egg bonus symbols, the more free spins awarded:

4 Egg Bonus symbols 8 free spins
5 Egg Bonus symbols 9 free spins
6 Egg Bonus symbols 10 free spins
7 Egg Bonus symbols 11 free spins
8 Egg Bonus symbols 12 free spins

Much more importantly, a chicken multiplier symbol can land any on the reels. The multiplier values range from 2x up to 100x. Land multiple multiplier symbols will see the values added together. Like in the base game, you’ll benefit from collapsing wins and the Power Zones feature.

Thunder Birds: Power Zones Review Summary – a simple grid slot with big multipliers

Theme & Symbols

Sounds & Music

Bonus Features

RTP (96.42%)

Max Win (7,387 x)


The Thunder Birds: Power Zones slot is a decent grid game which is fun and light-hearted. Visually, it will remind you of a few kids’ movies which may not be the wisest move by Playtech.

Anyway, the gameplay is pretty simple and that’s not a bad thing. With more and more grid slots available to play, slot providers are trying to outdo each other by adding various bonus features and extras. Playtech has taken the simple route with Thunder Birds: Power Zones.

The unique Power Zones feature from other Playtech slots, like Stallion Strike, is used here. The Power Zone feature basically transforms symbols into 1 symbol. This can result in some decent wins, especially if you combine them with the multipliers in the free spins.

The key to winning big is in the Free Games feature is from the chicken multiplier symbol for obvious reasons. It’s the same as the rainbow bomb multipliers found in Pragmatic Play’s Sweet Bonanza. With 7,387 x stake max wins per free spin up for grabs, it’s lower than Stallion Strike (26,900 x stake) and Sweet Bonanza (21,175 x stake).

If you’re looking for grid slots, there are better ones available. My picks would by Push Gaming’s Jammin’ Jars 2 and Star Clusters Megaclusters from Big Time Gaming. Both offer bigger max wins than Thunder Birds: Power Zones.

  • Simple grid gameplay
  • Multipliers up to 100x in free spins
  • 7,387 x stake max wins
  • Cutesy graphics might not appeal to some

Thunder Birds: Power Zones FAQs

What is Thunder Birds: Power Zones RTP?

The Thunder Birds: Power Zones RTP rate is 96.42% which is higher than most slot games (96% average). The variance is medium to high with the bigger wins coming from the free spins.

What is Thunder Birds: Power Zones max win?

The most you can win is 7,387 x your total stake. This can be won during the free spins with chicken multipliers up to 100x can land on the reels.

Are there any Thunder Birds: Power Zones free spins?

Yes, the Free Games feature gives you up to 12 free spins. Look out for chicken multiplier symbols which will add multipliers up to 100x to your wins. Multiple multipliers will see the values added together too.

Is there a Thunder Birds: Power Zones demo?

Yes, the Thunder Birds: Power Zones free play version can be found here at Fry birds with this exciting grid slot on mobile, tablet and/or desktop devices.