Stakelogic launches Sunken City Riches slot with a 15,000x top multiplier

Stakelogic has introduced Sunken City Riches, a new online slot built around a gradual feature-unlocking system, a secondary meter that stores multiplier values and a maximum multiplier of 15,000x. The game uses a 1,024-ways format and combines its Treasure Map Meter with a Gem Meter, giving players two separate forms of progression to follow during play.

Rather than relying on a single bonus round, Sunken City Riches is designed so collected symbols can change the features available on subsequent spins. Stakelogic says several modifiers can remain active after being unlocked, creating a feature set that develops as the session progresses.

The release combines persistent reel modifiers, a separate multiplier-collection mechanic and a free spins feature. Together, these elements establish a gameplay structure in which different mechanics can become available as players collect the required symbols.

A slot built around two meters

The central mechanic begins with Treasure Map Scatter symbols, which can appear anywhere on the reels. According to the game's description, each collected scatter contributes to both the Treasure Map Meter and the Gem Meter, although the two meters serve different purposes.

The Treasure Map Meter tracks progress towards unlocking reel modifiers. Every four collected scatters unlock the next feature in the sequence: Payway Maker, Symbols Upgrade, Add Wild Multipliers and Split Symbols.

Once a modifier has been unlocked, it remains available and may activate randomly on later spins. The game can also trigger more than one unlocked feature on the same spin, allowing different modifiers to operate together.

This persistent progression is the main distinction highlighted by the release. Instead of treating each feature as an isolated event, the slot gradually expands the set of mechanics that may affect future spins. Consequently, the features available later in a session can differ from those accessible at the beginning.

The system also creates two separate progression objectives. While the Treasure Map Meter tracks feature unlocks, the Gem Meter accumulates multiplier values for a later bonus round. Each meter therefore contributes a different element to the overall game structure.

How the Gem Meter leads to the Mystery Pick Bonus

The Gem Meter follows a separate track. Instead of immediately paying out the multiplier values associated with Treasure Map Scatters, it stores those values until the meter reaches 20 gems. At that point, the Mystery Pick Bonus becomes available.

During the pick round, players select gears until the Collect Gear is revealed. The multiplier values banked in the Gem Meter are then carried into the bonus and applied to the stake according to the game mechanics. This gives the second meter a different purpose from the Treasure Map Meter: one unlocks modifiers while the other accumulates values for a subsequent bonus.

The stated maximum multiplier is 15,000x the stake. This figure represents the game's advertised maximum potential rather than a typical or guaranteed result. Actual outcomes depend on the game's mechanics and can vary substantially between spins.

The Mystery Pick Bonus also provides a connection between the collection phase and the later bonus round. Rather than introducing a completely separate set of values at the start of the bonus, the feature uses multiplier values accumulated through the Gem Meter.

Free spins and optional features

Sunken City Riches also includes a Free Spins Feature. It is triggered by landing three or more Free Spins Scatter symbols, while retriggers award three, four or five additional spins.

Stakelogic says the unlocked features remain available during the free spins round and at least one feature is guaranteed on every spin in that mode. This condition gives the feature a distinct structure from the standard game, where modifiers can activate randomly after being unlocked.

The game also offers Super Stake™, an optional setting priced at 50 per cent of the base bet. According to the release information, activating it doubles the chance of triggering free spins. Players may alternatively purchase the bonus for 100 times their stake, where that option is available and permitted.

These options provide different ways to access certain features, but they do not remove the uncertainty inherent in slot play. The stated stake requirements and availability can also depend on the casino platform and the market in which the game is offered.

Players should review the game rules and the operator's terms before using optional stake or bonus-purchase features. The applicable conditions should be checked before play rather than assumed to be identical across all operators.

James Jelliffe outlines the game's design

James Jelliffe, Head of Slots at Stakelogic, said: “Sunken City Riches is built around progress that sticks. Instead of handing players one feature and then resetting, the Treasure Map Meter keeps adding to what the reels are capable of, so the game a player is looking at after some spins is not the same game they started with.”

“Pairing that with the Gem Meter gives players two things to chase at once and because the multipliers are visibly banked before they are paid, the Mystery Pick Bonus arrives with real weight behind it. It is one of our most feature-dense releases to date and we think players will enjoy piecing it together.”

The comments describe the design priorities behind the release: persistent modifiers, two simultaneous progression systems and a bonus that uses accumulated multiplier values. The features are intended to give the game a sense of development across a session rather than concentrating all its mechanics in one isolated round.

The emphasis on ongoing progression also distinguishes the game's central mechanics from a conventional slot structure in which individual spins operate without a comparable system of persistent feature unlocks. In Sunken City Riches, the meters provide a visible way to track progress towards different gameplay elements.

Availability and player information

Sunken City Riches is a Stakelogic title, but availability may vary by operator and jurisdiction. The presence of a game in a provider's portfolio should not be taken as confirmation that it is available in every regulated market.

Players should check the rules and information displayed by their chosen casino and consult the relevant licensing authority if they need to verify an operator's status. The UK Gambling Commission maintains a public register for businesses it licenses, while the Malta Gaming Authority publishes information on player protection and responsible gambling.

GambleAware also offers practical guidance on setting spending limits, managing time and recognising when gambling may be causing concern. These resources provide general information and do not replace the terms or legal requirements applicable in a player's own location.

Conclusion

With Sunken City Riches, Stakelogic has placed persistent feature progression at the centre of a 1,024-ways slot. The Treasure Map Meter unlocks modifiers that can continue to appear, while the Gem Meter stores multiplier values for the Mystery Pick Bonus. Free spins, retriggers, Super Stake™ and a bonus-purchase option add further ways to access the game's mechanics.

The title's defining feature is the interaction between the two meters rather than the maximum multiplier alone. Its advertised 15,000x ceiling may attract attention, but the more distinctive design choice is that accumulated progress can influence the features available later in play.

Ultimately, Sunken City Riches combines several interconnected mechanics into a single gameplay structure. Whether the format appeals to individual players will depend on their preferences, but the combination of persistent modifiers and banked multipliers gives the release a clear identity within Stakelogic's slot portfolio. As with any game involving wagers, the maximum multiplier remains a possibility rather than an expected outcome. Players should consider local rules, game terms and personal spending limits before playing.

FAQs

What is Sunken City Riches?
Sunken City Riches is an online slot developed by Stakelogic. It uses a 1,024-ways format and features persistent reel modifiers, a Gem Meter, a Mystery Pick Bonus and free spins.

What is the maximum multiplier in Sunken City Riches?
The game has an advertised maximum multiplier of 15,000x the stake. This represents the maximum potential stated for the game and is not a guaranteed outcome.

How does the Treasure Map Meter work?
The Treasure Map Meter collects Treasure Map Scatter symbols. Every four collected scatters unlock the next reel modifier in the feature sequence.

Which features can the Treasure Map Meter unlock?
The four features are Payway Maker, Symbols Upgrade, Add Wild Multipliers and Split Symbols. Once unlocked, each feature can activate randomly on later spins.

What does the Gem Meter do?
The Gem Meter collects multiplier values associated with Treasure Map Scatters. The values are stored until the meter reaches 20 gems, which opens the Mystery Pick Bonus.

How does the Mystery Pick Bonus work?
Players select gears until the Collect Gear is revealed. The multiplier values accumulated in the Gem Meter are then carried into the bonus and applied to the stake according to the game's mechanics.

How can players trigger free spins?
The Free Spins Feature is triggered by landing three or more Free Spins Scatter symbols. Retriggers award three, four or five additional spins.

What happens to unlocked features during free spins?
According to Stakelogic, all unlocked features remain available during the free spins round. At least one feature is guaranteed on each spin in that mode.

What is Super Stake™ in Sunken City Riches?
Super Stake™ is an optional setting that costs 50 per cent of the base bet. Stakelogic states that it doubles the chance of triggering free spins.

Can players purchase the bonus feature?
The release information states that the bonus can be purchased for 100 times the stake. Availability and applicable conditions may vary depending on the casino operator and jurisdiction.

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