Siren's Kingdom

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Rules and Gameplay

Siren’s Kingdom by Iron Dog Studio offers an immersive underwater adventure set across a 5 reel, 3 row slot machine, featuring 30 paylines for players to win on. Players embark on a quest to uncover hidden treasures beneath the waves, guided by the enchanting mermaids. The game’s objective is to match symbols across paylines for a chance to win prizes, with a special emphasis on the game’s wilds and free spins to amplify winning opportunities. The betting range is wide, accommodating both casual players and high rollers, with stakes starting from $0.30 to $150 per spin.

Bonus Features

The game is rich in bonus features designed to enhance the player’s experience and increase their chances of winning big. Key features include:

  • Expanding Wilds: The mermaid wilds can expand to cover entire reels, potentially creating more winning combinations.
  • Free Spins: Triggered by landing three or more scatter symbols, offering up to 36 free spins. During free spins, wilds transform, offering additional ways to win.
  • Sticky Wilds: In the free spins mode, wilds become sticky, locking in place for subsequent spins and expanding in different directions to enhance payout potential.

These features are not only lucrative but add a layer of excitement to the gameplay, as players watch for the appearance of these special symbols and the transformative effects they have on the game.


The symbols in Siren’s Kingdom are beautifully designed to fit the underwater theme and include a range of ocean-inspired elements. Notable symbols include:

  • Low-value symbols: Traditional A to 10 playing cards.
  • High-value symbols: Starfish, shells adorned with pearls, and other sea-themed icons.
  • Wild Symbol: The flame-haired siren, which substitutes for all other symbols except the scatter, and expands to fill the reel in the base game.
  • Scatter Symbol: An octopus holding a pearl, which triggers the free spins feature.

Each symbol has been carefully crafted to contribute to the overall enchanting underwater atmosphere of the game.


Siren’s Kingdom features 30 paylines, providing numerous opportunities for players to form winning combinations across the reels. These paylines are fixed, meaning players will always be betting on the full set, ensuring maximum chances of winning on each spin. The game’s design allows for easy understanding of how paylines work, making it accessible for players of all experience levels.

Pros & Cons

Pros Cons
Engaging underwater theme with high-quality graphics May not appeal to players looking for more action-packed themes
Expanding and sticky wilds enhance winning potential High variance might deter players preferring frequent small wins
Generous free spins feature with up to 36 spins Limited bonus game variety beyond free spins and wilds

Minimum and Maximum Bet

The betting range in Siren’s Kingdom caters to a wide variety of players, with minimum bets starting at $0.30 and maximum bets reaching up to $150. This wide betting range makes the game accessible to both casual players who prefer to wager lower amounts and high rollers looking for the thrill of high stakes.

Game Jackpot

The maximum jackpot available in Siren’s Kingdom is an impressive 150,000 coins. This slot game features a Return to Player (RTP) rate of just over 96%, which is above average for online slots, indicating that players have a fair chance of winning back a significant portion of their wagers over time. The game’s variance is medium to high, suggesting that while wins might not be extremely frequent, they can be quite substantial when they do occur, aligning well with the game’s jackpot potential.

About Provider

Iron Dog Studio, the provider of Siren’s Kingdom is known for its innovative approach to online slot development. As a relatively new player in the industry, Iron Dog Studio has quickly established a reputation for creating high-quality, engaging slots with unique themes and features. Their games are characterized by detailed graphics, inventive bonus features, and compatibility across a wide range of devices, thanks to the latest HTML5 technology. Siren’s Kingdom is a testament to Iron Dog Studio’s commitment to delivering immersive gaming experiences.

How To Play

  1. Start by setting your bet size. Adjust the coin value to determine the total wager per spin, keeping in mind the minimum of $0.30 and maximum of $150.
  2. Review the paytable to understand the value of each symbol and the game’s bonus features.
  3. Press the spin button to start the game. The reels will spin and eventually stop to reveal the symbol combinations.
  4. Watch for special symbols like the expanding wild mermaids and scatter symbols. Landing three or more scatters triggers the free spins feature.
  5. Utilize the free spins and watch for sticky and expanding wilds to increase your chances of winning big.
  6. Continue playing as long as you wish, adjusting your bet size as needed to manage your bankroll.


Siren’s Kingdom offers a captivating underwater adventure with its enchanting theme, detailed graphics, and engaging gameplay. The game’s expansive betting range makes it suitable for all types of players, while the potential for big wins, especially through the generous free spins feature and the expanding wilds, adds to its appeal. Despite its few drawbacks, such as the high variance and limited bonus variety, Siren’s Kingdom stands out as a well-crafted slot that is worth exploring. Iron Dog Studio has once again demonstrated their ability to create immersive slots that captivate players’ imaginations and provide them with a rewarding gaming experience.