| Title | Cluster Kingdom |
| Provider | ELK Studios |
| Game release | 01-10-2024 |
| RTP | 94% |
| Min bet | 0.20 |
| Max bet | 100 |
| Max win | 10000x |
| Reels | 5 |
| Rows | 5 |
| Paylines | Cluster Pay |
| Bonus game | Yes |
| Jackpot slot | No |
| Feature Buy-In | Yes |
| Hold and Win | No |
Cluster Kingdom by ELK Studios is a regal cluster-paying slot where royalty rules the reels. Released in October 2024, it combines classic fantasy visuals with strategic gameplay centered around unique royal features and persistent multipliers. With a 5×5 grid, cluster wins, and a 10,000× max win, the slot captures the grandeur of a medieval court while offering the deep mechanical layering that defines ELK’s premium releases. Play the slot for free here.
⦿ Developer: ELK Studios
⦿ Release Date: October, 2024
⦿ Reels / Rows: 5 × 5
⦿ Volatility: High
⦿ RTP: 94.0%
⦿ Max Win: 10,000× bet
⦿ Min / Max Bet: €0.20 – €100
⦿ Pay System: Cluster Pays
⦿ Bonus System: Free Drops, Sticky Redrops, Mini, Super, and Regular Bonuses
⦿ X-iter™ Options: 3×–500× bet
Cluster Kingdom unfolds in a world of royal treasures, illuminated by torches and glimmering gold. The warm tones of wood and metal dominate the backdrop, setting a noble but grounded atmosphere. The symbols include coins, gemstones, and heraldic icons, accompanied by Wilds and the royal trio — King, Queen, and Princess — who shape the entire gameplay.
The soundtrack feels majestic yet restrained — a blend of orchestral cues and the subtle clink of coins — immersing players in a medieval castle’s throne room.
Wins occur when five or more matching symbols connect vertically or horizontally. After each win, the symbols are removed, and new ones cascade into place — a key feature of ELK’s cluster design.
Wild symbols substitute for any paying symbol. When they participate in wins, Multiplier Wilds increase their value by +1. If two Multiplier Wilds touch, their values multiply, and one of them transforms into a standard Wild. Multipliers persist across rounds in bonus modes, allowing exponential growth.
Triggered by selecting one paying symbol, all matching symbols become sticky, holding their position. New matching symbols extend the round, awarding additional redrops. The sequence ends when no new matches appear, after which winnings are evaluated. Wilds and Multiplier Wilds remain inactive until the feature concludes, ensuring maximum stability for buildup potential.
Cluster Kingdom’s unique twist lies in its three royal symbols — Princess, Queen, and King — each adding a layer of depth to the gameplay.
⦿ Princess Feature: Adds 1–4 Wilds to random positions. If the King symbol appears on the grid, the Princess moves one step toward him after every win.
⦿ King Feature: Upgrades the lowest-paying adjacent symbols into higher-value ones, creating new winning opportunities.
⦿ Queen Feature: Swaps positions of neighboring symbols to set up future clusters. When the King is visible, she too moves one step closer to him per win.
Each royal operates independently but can interact dynamically — their movements and abilities align to trigger one of three bonus rounds.
Triggered when the Princess and King symbols become adjacent. Awards 3 Free Drops with increasing persistent Multiplier Wilds.
Activated when the King and Queen symbols connect. Grants 6 Free Drops, during which multipliers remain sticky between drops, creating sustained value growth.
Unlocked when King, Queen, and Princess meet side by side. Begins with 6 Free Drops featuring persistent Multiplier Wilds that increase by +1 for each win they participate in. The synergy of all three royals can lead to cascading wins that approach the game’s 10,000× win cap.
All bonus modes can be retriggered and continue until no Free Drops remain or the win cap is reached.
ELK’s X-iter™ system lets players instantly access specific gameplay states:
⦿ Bonus Hunt – 3× bet, triple chance to trigger a bonus.
⦿ Sticky Redrops – 10× bet, guarantees sticky mechanics.
⦿ Mini Bonus – 50× bet, access 3 Free Drops with multipliers.
⦿ Bonus – 100× bet, start directly in the standard bonus round.
⦿ Super Bonus – 500× bet, enter the ultimate mode with all royal features active.
All X-iter modes retain the base 94% RTP and maintain the same win cap of 10,000× bet.
Triggered when the Princess and King symbols become adjacent. Awards 3 Free Drops with increasing persistent Multiplier Wilds.
Activated when the King and Queen symbols connect. Grants 6 Free Drops, during which multipliers remain sticky between drops, creating sustained value growth.
Unlocked when King, Queen, and Princess meet side by side. Begins with 6 Free Drops featuring persistent Multiplier Wilds that increase by +1 for each win they participate in. The synergy of all three royals can lead to cascading wins that approach the game’s 10,000× win cap.
All bonus modes can be retriggered and continue until no Free Drops remain or the win cap is reached.
ELK’s X-iter™ system lets players instantly access specific gameplay states:
⦿ Bonus Hunt – 3× bet, triple chance to trigger a bonus.
⦿ Sticky Redrops – 10× bet, guarantees sticky mechanics.
⦿ Mini Bonus – 50× bet, access 3 Free Drops with multipliers.
⦿ Bonus – 100× bet, start directly in the standard bonus round.
⦿ Super Bonus – 500× bet, enter the ultimate mode with all royal features active.
All X-iter modes retain the base 94% RTP and maintain the same win cap of 10,000× bet.
With high volatility and a 94% RTP, Cluster Kingdom is designed for players who favor endurance over quick returns. The game’s true strength lies in its persistent multiplier system and sticky mechanics, which build momentum through multiple drops. The 10,000× max win is achievable in Super Bonus mode, particularly when multiple Multiplier Wilds merge within large symbol clusters.
Cluster Kingdom is a perfect showcase of ELK Studios’ evolving cluster-slot design philosophy. It replaces randomness with tactical buildup — every royal movement, sticky redrop, and multiplier merge feels earned. The medieval setting gives the chaos a regal polish, while the gameplay remains unmistakably ELK: layered, fast, and rewarding.
Though the 94% RTP might deter some players, the persistent features and 10,000× potential justify the risk. For fans of titles like Cygnus 4 and Ryze, this royal release stands tall among the year’s best.
