Sunken City Riches Slot
Get 100 Free Spins when You Bet £20
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Sunken City Riches Demo
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3,000+
Up to 24 hours-
United Kingdom (UKGC)
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Sunken City Riches Slot RTP, Details & Wager Limits
The quest for ancient riches in the Sunken City Riches slot game unfolds on a 5×4 gaming grid with 1,024 ways to win. As usual, you win by landing 3, 4, or 5 matching symbols on adjacent reels from left to right.
Stake levels are quite tight, ranging from 20p to £40 per spin. It feels like one of those online slots tailored for players on a budget. Still, remember that if you’re playing at UK Sunken City Riches casinos, stakes can exceed £5 and the autoplay and turbo spin functions are disabled.
At 96.01%, the Sunken City Riches RTP sits around the industry average. Unlike many new online slots, I didn’t come across lower RTP variants during my review. This quest is highly volatile, rated 5 out of 5. It means you’ll need a lot of patience to hit those big payouts.
Stakelogic compensates for the high risk with a Sunken City Riches max win of 15,000x the bet. It’s weighty. However, some players might expect more than the £450,000 payout cap. If you’re after bigger prizes, progressive slots might be right up your alley.
My top wins came in the Free Spins round, with the best reaching up to £1,800 on a £5 stake. Try the Sunken City Riches demo to see how lucky you can get. It’s available at the top of this page and on our free online slots page alongside thousands of other titles.
Sunken City Riches Theme—Follow the Monkey’s Lead on the Quest
If a name like Sunken City Riches had you thinking about Plato’s fictional city, Atlantis, then you’re not alone. But unlike the textbook submerged city visuals in titles like Atlantis 10K Ways™, this one blends in more adventure.
It’s not quite evident that the scene is set underwater, at least in the base game. After all, you wouldn’t expect butterflies to flutter around in the ocean depths.
But things start to make much more sense in the bonus round. Colourful fish swim around the grid, the corals become more vibrant, and the ancient city in the background lights up.
A playful monkey is your guide on this quest. It jumps around the grid and throws bananas on the reels. In addition, I like the cultural soundtrack that backs the scene, with flutes and drums building a sense of tension.
Here’s what the paytable looks like at UK slot sites:
| Symbols | Payouts/Info |
 10 | 3, 4, or 5 = 0.1, 0.2, or 0.4x the stake |
 J | 3, 4, or 5 = 0.1, 0.2, or 0.4x the stake |
 Q | 3, 4, or 5 = 0.2, 0.3, or 0.5x the stake |
 K | 3, 4, or 5 = 0.2, 0.3, or 0.5x the stake |
 A | 3, 4, or 5 = 0.2, 0.3, or 0.5x the stake |
 Trident | 3, 4, or 5 = 0.4, 0.7, or 1x the stake |
 Compass | 3, 4, or 5 = 0.5, 0.9, or 1.5x the stake |
 Pearl | 3, 4, or 5 = 0.6, 1.2, or 2.5x the stake |
 Diver’s Helmet | 3, 4, or 5 = 1, 2, or 5x the stake |
 Scatter | 3+ triggers the bonus round |
 Wild | Appears on reels 2–5; Completes winning combinations by substituting for regular symbols |
Sunken City Riches Mobile Slot
I had a great time playing the Sunken City Riches slot on my smartphone. The waterfall, fluttering butterflies, and monkey animations hold up well on small screens, as well as the cultural soundtrack.
I didn’t experience any stutters when loading the game, and the controls are responsive. Like the best online slots, it supports both landscape and portrait play on mobile casinos.
Sunken City Riches Bonus Features
Sunken City Riches comes with twin progression meters that unlock in-game modifiers and trigger a pick-me bonus round. There’s also a Free Spins round and a Bonus Buy feature.
Treasure Map Meter
The game features a Treasure Map Meter above the reels. It has 4 bonus features, unlocked by collecting at least 4 Treasure Map Scatter symbols that land on the reels. Once a feature is unlocked, it can randomly activate on subsequent spins.
Here’s a breakdown of these features:
- Payway Maker (4 Treasure Map Scatters): A symbol from reel 1 is randomly selected and duplicated on other reels to form a winning combination
- Symbols Upgrade (8 Treasure Map Scatters): It upgrades a random symbol into the highest-paying symbol (Diver’s Helmet)
- Add Wild Multipliers (12 Treasure Map Scatters): The monkey throws up to 3 wild multipliers on random positions on the reels. These multiplier values range from 1x to 5x the bet and apply to wins the wild is part of
- Split Symbols (16 Treasure Map Scatters): It splits up to 10 random paying symbols, increasing your chances of creating a win
Once all the features are unlocked, the meter resets, but all the features remain unlocked.
Gem Meter
There’s also a Gem Meter on the right side of the grid. It collects the cash values on the Treasure Map Scatter symbols, which can appear in four variants, each with a different prize range as follows:
- Green: 3x–10x the bet
- Blue: 15x–25x the bet
- Red: 50x–250x the bet
- Purple: 500x–1,000x the bet
Collecting any 20 Treasure Map Scatters fills the meter and unlocks the Mystery Pick Bonus game. It’s a pick-me bonus round where you choose your fate.
The 20 collected cash values are spread across the grid facedown, and selecting any reveals its prize. You are awarded 3 picks, and you can also reveal an extra life, awarding up to 4 extra picks.
At the end of the round, the awarded prizes are summed up and awarded, then you’ll return to the base game. Keep in mind that Gem Meter progression is saved for each bet level. So, the meter will always reflect the progression saved on your current bet.
Free Spins
Landing 3, 4, or 5 Free Spin Scatters in the base game triggers 8, 10, or 12 bonus spins. During this bonus round, every spin unlocks a random Treasure Map Meter feature. Even more, whenever 3, 4, or 5 scatters appear, you’ll get an additional 3, 4, or 5 spins.
Super Stake and Buy Free Spins
Super Stake is an Ante Bet that allows you to increase your stake by 50% for better chances of landing scatters in the base game.
It also has a Buy Bonus option that takes you directly into the Free Spins round. It costs 100x the bet.
Sunken City Riches Verdict: Progression Meter Makes the Quest Exciting
Fans of progression-meter gameplay will like the thrill of filling twin meters in the Sunken City Riches slot game. It’s also refreshing to see a more adventurous spin on the popular Atlantis setting.
Even though it’s clear as day that Sunken City Riches is inspired by Atlantis, it’s not until the bonus round that visuals truly tell the tale. That doesn’t take anything from it, though. If anything, it’s a bold step away from the cliched setting, and it looks great and playful.
What really caught me was the gameplay. While the progression meter mechanic isn’t novel, using it without cascading reels got an instant nod from me. I also like that the unlocked features never reset, loosely similar to Fantasma’s 3 Bandits.
The hit frequency of the Treasure Map Scatters isn’t bad. At least, I unlocked all the features in my first 120 spins and triggered the Mystery Pick Bonus game in fewer than 150 spins. Things really crank up during free spins, as a feature is guaranteed to trigger on each spin.
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Specialising in reviewing online casinos, sportsbooks, and slots, Olamidotun consistently delivers engaging and insightful content. His writing captivates readers, providing a deep understanding of the subject matter. Trusted by enthusiasts and beginners alike, he continually enhances his skills to meet the demands of the evolving online gaming world.
