3 Secret Cities Slot Review

Expert Rating: 5 out of 5
Review by Chris Taylor
Last update 8th June 2022
Review by Chris Taylor
Last update 8th June 2022

Embark on an amazing Aztec adventure and discover the lost temple treasures in the 3 Secret Cities slot. Powered by 4ThePlayer and with 5 reels and 1,024 ways to win, it uses the BONUS↑UP feature where you progress on the map to reach 3 cities. The city you’re at will determine what you can play in the Temple Free Spins Bonus feature. The Gold City can give you up to 50 initial free spins with a 15x multiplier as well a super stacked symbol. This can lead to 50,000 x stake wins on each free spin. What riches will you discover? Find out in our 3 Secret Cities review.

3 Secret Cities Max Win
50,000 x bet
Type of Slot
Video Slot
Aztec Adventure
Stakes Range
10p to £20
Bonus Features
Yes (3)
Free Spins/Multiplier
Max Win
50,000 x

3 Secret Cities Demo

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3 Secret Cities Slot RTP, Details & Wager Limits

Reels/Paylines: 5 reels + 1,024 ways to win

Stakes Range: 10p to £20 per spin

RTP: 96.5%

Max Win: 50,000 x stake per spin

The 3 Secret Cities slot comes with 5 reels, 4 rows and 1,024 ways to win. To land a winning combination, you need 3, 4 or 5 matching symbols on successive reels beginning from reel 1. The 3 exceptions are the highest value symbols whereby you only need 2 to form a win.

You can spin away from 10p to £20 per spin. This allows for all players to play. To play at your desired bet level, click on the plus and minus buttons which appear above or below the main spin button. You will also see an Autoplay function which allows up to 100 autospins with loss and single win limits. This option will not be available in the UK from October 2021.

The 3 Secret Cities RTP is 96.5% which gives you a better return than most slots (normally 96%). 70% of wins will come from the base game and 26.5% from the free spins. If you use the Buy feature, the RTP increases to 98%.

Highly volatile, the bigger wins will come in the free spins with the multipliers. The maximum win per free spin is 50,000 x your total stake.

Theme – Audio and Design Features – discover the lost temple treasures

Theme: Aztec Adventure

High Value Symbol: Priestess

Compatibility: Mobile, Tablet, Desktop


The 3 Secret Cities slot has an Aztec adventure theme. It’s set deep in the darkest jungle where the lost Aztec temples lie hidden. These temples are filled with riches that only the bravest explorers will get to. With dangers lurking, will you go on this adventure?

Visually quite bright, you will hear birds chirping. The soundtrack has an eerie and mystical feel which adds to the atmosphere and intensity. Overall, I must say developer 4ThePlayer has delivered a superb-looking game.

Symbols on the reels include low value A, K, Q, J and 10 royals which have an Aztec style. They have been enhanced with a knife, treasure map, adventurer hat, grapple hook and compass. Then you have golden jewel encrusted snakes, jewel-filled necklaces, black panthers, the adventurer and the Priestess. The adventurer resembles Lara Croft slightly.

The latter 2 symbols appear stacked on the reels. The Priestess is the highest paying symbol giving you 0.5, 1.5, 3 or 5 x stake for 2, 3, 4 or 5 in combination.

The gold Aztec coin is the wild symbol and appears on all 5 reels. As with most games, the wild substitutes for every symbol except for the Free Spins scatter. Here’s a list of payouts per symbol:

Symbol Payouts
3-secret-cities-slot-10-symbol10 3, 4 or 5 = 0.2, 0.5 or 1 x stake
3-secret-cities-slot-j-symbolJ 3, 4 or 5 = 0.2, 0.5 or 1 x stake
3-secret-cities-slot-q-symbolQ 3, 4 or 5 = 0.3, 0.7 or 1.5 x stake
3-secret-cities-slot-k-symbolK 3, 4 or 5 = 0.3, 0.7 or 1.5 x stake
3-secret-cities-slot-a-symbolA 3, 4 or 5 = 0.3, 1 or 2 x stake
3-secret-cities-slot-snake-symbolSnake 3, 4 or 5 = 0.5, 1.5 or 2.5 x stake
3-secret-cities-slot-necklace-symbolNecklace 3, 4 or 5 = 0.5, 1.5 or 2.5 x stake
3-secret-cities-slot-panther-symbolPanther 2, 3, 4 or 5 = 0.2, 1, 2 or 3 x stake
3-secret-cities-slot-adventurer-symbolAdventurer 2, 3, 4 or 5 = 0.5, 1.2, 2.5 or 4 x stake
3-secret-cities-slot-priestess-symbolPriestess 2, 3, 4 or 5 = 0.5, 1.5, 3 or 5 x stake
3-secret-cities-slot-gold-aztec-coin-wild-symbolGold Aztec Coin Wild Substitutes for all symbols except scatter
3-secret-cities-slot-free-spins-scatter-symbolFree Spins Scatter Triggers Temple Free Spins Bonus feature

BIG REEL Portrait Mode

When playing 3 Secret Cities on a mobile device in portrait mode, you have the option of playing classic small reels or BIG REEL Portrait Mode. The latter enlarges the reels and stacks them on top of each other with the reels spinning right to left and paying top to bottom.

The BIG REEL Portrait Mode maximises the visual experience on a mobile device. Also, the reels will occupy 60% of your mobile screen as opposed to 20% in classic mode. Furthermore, 3 Secret Cities is available to play on tablet and desktop devices too.

3 Secret Cities Bonus Features

3 Secret Cities comes with 3 bonus features. Central to the action is the BONUS↑UP feature which determines what your reward is in the Temple Free Spins Bonus feature. The more you play, the bigger the prizes. There’s also a Buy feature giving you instant access to the free spins.

BONUS↑UP feature


3 Secret Cities is the first slot to use the BONUS↑UP feature. As you play the game, the bonus prizes are improved. The more you play, the better the prizes. This is displayed above the reels. There are 3 mysterious locations each with multiple prize levels:

  • Jungle City
  • Lake City
  • Gold City

If you land Free Spins scatters on reels 1 and 3 only, you will need to pick from the scatters to reveal the following:

  • Cash prize up to 50 x stake
  • Progression to the next location

Each time you win progression, you move 1 dot on the map. This map is found by clicking on the Bonus Top Prizes panel. Once you’ve played the free spins, you will be taken back to the Jungle City which offers the best chance of triggering the Temple Free Spins Bonus feature.

Temple Free Spins Bonus feature


To play the Temple Free Spins Bonus feature, land the Free Spins scatter on reels 1, 3 and 5 in your current location. This will transport you to the Temple Pick where you select 1 block from each row, beginning with the bottom row. Choosing a block will reveal 1 of the following:

  • A number of free spins
  • A multiplier for the free spins
  • A symbol that will appear super stacked on the reels
  • An ‘X’ which ends the picks and begins the free spins

The top prizes in the Temple Pick will be determined by your progress in the BONUS↑UP feature. Here’s the maximum free spins and multiplier you can get per location depending on your progress on the map:

City Free Spins Multiplier Max Win/Free Spin
Jungle City 15 free spins 5x multiplier 16,000 x stake
Lake City 25 free spins 8x multiplier 30,000 x stake
Gold City 50 free spins 15x multiplier 50,000 x stake

Once in the free spins, Free Spins scatters on reels 1 and 3 will give you between 5 and 10 additional free spins. You pick a scatter to determine how many extra free spins are won. The number of free spins is in theory unlimited.

Buy feature

In some countries, there’s a Buy feature. You have 3 options to buy your way into the Temple Free Spins Bonus feature which take you to Jungle, Lake or Gold City. Here’s what they offer and how much it costs:

City Free Spins Multiplier Cost
Jungle City 15 free spins 5x multiplier 50 x stake
Lake City 25 free spins 8x multiplier 100 x stake
Gold City 50 free spins 15x multiplier 200 x stake

One important thing to note is that the RTP increases to 98% if you use the Buy feature. Unfortunately, this option isn’t available in the UK due to Gambling Commission regulations.

3 Secret Cities Review Summary – superb from 4ThePlayer

Theme & Symbols

Sounds & Music

Bonus Features

RTP (96.5%)

Max Win (50,000 x)


4ThePlayer has released other innovative games and the 3 Secret Cities slot is another to add to the list. With big 50,000 x stake wins possible on each free spin, this game is all about the BONUS↑UP feature which gives you a more rewarding free spins game the more you play.

The key to winning big is to land scatters on reels 1 and 3 and progress on the map to reach the Gold City. If you reach the latter, the picks in the Temple are more lucrative which will lead to more free spins, bigger multipliers and a super stacked symbol.

However, 3 Secret Cities is a volatile slot game with the average free spins win being 111 x your total stake. Furthermore, no RTP is stored for later prizes which gives you full value on every spin.

The BONUS↑UP feature has some similarities to the Heartstopper token system used in Big Time Gaming slots like Lil’ Devil. It means that you won’t want to trigger the free spins that quickly. If you progress through the map and reach Lake or Gold City, the potential prizes are bigger as you’ll play with more free spins and a higher multiplier.

The Temple pick element reminds me of the Dino Bonus feature in Push Gaming’s Dinopolis where you choose from playing cards to win sticky stack wilds, single reel multiplier boosters, all reel multiplier boosts, more picks and free spins.

Overall, 3 Secret Cities is a unique slot which will appeal to the more experienced player. Brilliantly designed, this could be 4ThePlayer’s best release yet.

4ThePlayer has since released a sequel, 4 Secret Pyramids, which takes you to ancient Egypt. Bigger and better, it offers 55,000 x bet max wins.

  • Big win potential (50,000 x stake)
  • Rewarding BONUS↑UP feature
  • Superb graphics + soundtrack
  • Hard to trigger free spins

3 Secret Cities FAQs

What is the 3 Secret Cities RTP?

The 3 Secret Cities RTP is 96.5%. Higher than most slot games, the RTP rises to 98% if you use the Buy feature. The variance is very high though with the bigger wins coming in the free spins.

What is the 3 Secret Cities max win?

The maximum win per spin is 50,000 x your total stake. This will come in the free spins if you manage to reach Gold City where the multiplier can reach up to 15x.

What is the BONUS↑UP feature?

The BONUS↑UP feature gives you a potentially more lucrative free spins experience the more you play. With 3 cities to reach on the map, each location gives you varying number of free spins, multiplier and max win per free spin.

Are there any 3 Secret Cities free spins?

Yes, the Temple Free Spins Bonus feature sees you head to the Temple Pick and select 1 block from each row. With free spins, multipliers and super stacked symbols to be won, the Gold City can give you up to 50 initial free spins with a multiplier up to 50x. In all 3 cities, you can win unlimited extra free spins.