- All Slots ›
- ELK Studios ›
- Cluster Kingdom™
Cluster Kingdom (ELK Studios) – Review & Demo Play
Cluster Kingdom from ELK Studios play free demo version ▶ Casino Slot Review Cluster Kingdom ✔ Return (RTP) of online slots on July 2026 and play for real money✔
The Cluster Kingdom Slot Game
Set on a tabletop with gold and silver coins showing the royal pair, Cluster Kingdom flips five cards across five reels to reveal twenty-five symbols on each spin. Wins land via clusters of five or more matching symbols that are adjacent. After a hit, the winning symbols and all non-winning identicals are removed and replaced with new ones, though they do not cascade downwards. The mediaeval vibe works well, and the heavy metal during big win counts gives the base game a proper rush.
Cluster Kingdom in Casinos:
➡️ New Slot Sites List Updated: July 2026
➡️ Casinos are licensed and tested by independent gambling auditors eCOGRA ✅ iTech Labs ✅ Gaming Laboratories International
!!! Remember the rules of the Safe Gambling & Responsible Gaming – Casinos can cause Gambling addiction !!!
Pyramid Spin
- Good selection of games
- Casino accepts players from many countries
- Huge selection of game providers
- Live chat support is available 24/7
Slots Charm
- Good selection of games
- Casino accepts players from many countries
- Huge selection of game providers
- Live chat support is available 24/7
Captain Marlin
- Good selection of games
- Casino accepts players from many countries
- Huge selection of game providers
- Live chat support is available 24/7
Libra Spins
- Good selection of games
- Casino accepts players from many countries
- Huge selection of game providers
- Live chat support is available 24/7
Euphoriawins
- Good selection of games
- Casino accepts players from many countries
- Huge selection of game providers
- Live chat support is available 24/7
Raptorwins
- Good selection of games
- Casino accepts players from many countries
- Huge selection of game providers
- Live chat support is available 24/7
Scarabwins
- Good selection of games
- Casino accepts players from many countries
- Huge selection of game providers
- Live chat support is available 24/7
Symbols and Payouts in Cluster Kingdom
Cluster Kingdom keeps it simple with five regular-paying symbols: wheat, tree, windmill, house, and castle. A cluster of five of a kind pays between 0.1x and 1x the bet, while landing twenty or more matching symbols awards between 25x and 250x the bet. A win consisting only of wild symbols pays as the highest value pay symbol. You do not need paylines here, just adjacent connections horizontally or vertically to form clusters that can expand when the grid refills after wins.
The paytable outlines each symbol clearly. Wheat pays from 0.1x up to 25x, Fruit Tree from 0.2x up to 50x, Windmill from 0.3x up to 100x, House from 0.5x up to 150x, and Castle from 1x up to 250x for the biggest clusters. Wilds substitute for any paying symbol, and multiplier wilds do the same while carrying values that apply to wins they are part of. These can be decisive in the larger cluster outcomes.
Cluster Kingdom Symbols and Paytable
| Symbol | Quantity | Payout |
|---|---|---|
 |
20+ | x250 |
| 15+ | x100 | |
| 7 | x2 | |
| 6 | x1.5 | |
| 5 | x1 | |
 |
20+ | x150 |
| 15+ | x50 | |
| 7 | x1.5 | |
| 6 | x1 | |
| 5 | x0.5 | |
 |
20+ | x100 |
| 15+ | x40 | |
| 7 | x1 | |
| 6 | x0.5 | |
| 5 | x0.3 | |
 |
20+ | x50 |
| 15+ | x20 | |
| 7 | x0.5 | |
| 6 | x0.3 | |
| 5 | x0.2 | |
 |
20+ | x25 |
| 15+ | x10 | |
| 7 | x0.3 | |
| 6 | x0.2 | |
| 5 | x0.1 | |
 | Wild, Multiplier | |
Cluster Kingdom Slot Bonus Features
Sticky Redrops are a centrepiece. When the sticky redrop symbol lands, it selects one paying symbol, and all matching symbols on the grid become sticky while the rest redrop. If at least one new matching symbol appears, you get a further redrop, and this repeats until no new matches land, at which point the payout is settled. Wilds and multiplier wilds are persistent during sticky redrops, while feature symbols remain inactive until that sequence ends.
Multiplier wilds substitute and apply their displayed values to winning combinations they join, and they stay sticky until the end of the round. When two multiplier wilds sit next to each other, their values multiply together and the total is added to one of them, with the other downgraded to a regular wild. This interaction can snowball during redrops and free drops, turning medium clusters into board-clearing results when values stack in the right spots.
Three feature symbols drive the theme. The Princess places one to four wilds, and if the King is visible she moves a step towards him after each win before refills. The King upgrades the lowest paying adjacent symbol type to the highest next to him. The Queen rearranges symbols and steps towards the King when he is visible. King and Queen adjacent award six free spins with persistent multipliers. Princess, Queen, and King together give six super free spins with increasing multipliers, while Princess and King adjacent give three spins.
Bonus Buy Feature
 | |
Bonus Hunt | |
| Feature Cost: | x3 Bet |
| RTP: | - |
| Volatility: | - |
 | |
Sticky Redrops | |
| Feature Cost: | x10 Bet |
| RTP: | - |
| Volatility: | - |
 | |
Mini Bonus | |
| Feature Cost: | x50 Bet |
| RTP: | - |
| Volatility: | - |
 | |
Bonus Game | |
| Feature Cost: | x100 Bet |
| RTP: | - |
| Volatility: | - |
 | |
Super Bonus Game | |
| Feature Cost: | x500 Bet |
| RTP: | - |
| Volatility: | - |
Feature Buy (X-iter) in Cluster Kingdom
The X-iter menu offers five buys: Bonus Hunt 3x bet, Sticky Redrops 10x, Mini Bonus 50x, Bonus Game 100x, Super Bonus Game 500x. Bonus Hunt more than triples the chance of triggering a bonus round. Sticky Redrops buys a spin with the feature active. The three bonus buys start straight into their respective free drops, with persistent multipliers where applicable. I use these when I want to shortcut the base game and target the higher rungs of the feature ladder.
How to Win at Cluster Kingdom Slot
Cluster Kingdom runs a straightforward cluster win system across five reels and five rows. I aim for blocks of five or more identical, touching symbols anywhere on the grid, as clusters pay regardless of paylines. Bets start at 0.20 and go up to 100, so I set a stake that matches my bankroll and let the refills do the work. Autoplay can help run sessions, but sticky redrops and feature symbols are the real swing points that turn small hits into rounds that matter.
Cluster Kingdom Slot RTP & Volatility
Cluster Kingdom runs a 94.0% RTP with mid-high volatility, a hit frequency around 25.0%, and a max win of 10,000x the bet. Stakes range from 0.20 to 100, which keeps it accessible while leaving headroom for those chasing bigger multipliers. The maths model can swing, but the cluster refills, sticky redrops, and multiplier wilds give frequent shots at linking wins across a round, especially when persistent multipliers carry over into free spins.
From my sessions the slot felt fair for its risk tier. Base game spice comes from multiplier wilds appearing in the right places, while the three character features nudge boards into shape for clusters. Bonuses raise the ceiling through persistence and increases on multiplier wilds. If you prefer steadier RTP realisation, Bonus Hunt is a handy lever, but the super bonus remains the clear outlier for chasing the headline numbers.
Useful guides
Free Spins No Deposit Not on GamStop (July 2026): Real Value Explained
How no deposit free spins at casinos not on GamStop really work: spin value maths, wagering and caps, the slots they run on, and how our team claims and tests them.
No Deposit Bonus Not on GamStop (July 2026): Free Spins & Cash Offers
Compare 7 tested non GamStop casino no deposit bonus offers: free cash from €5 to €50, 50 free spins, wagering maths and honest KYC facts. Updated July 2026.
Online Slots Sites (July 2026): 25,000+ Free Demos and 7 Tested Casinos
Online slots sites compared: 25,000+ free demos, every slot type from Megaways to Slingo, the new UK stake caps, and the 7 casinos we actually cashed out at.
Gallery of video and screenshots of the game
Other slots from ELK Studios:
We have 156 slots from the provider ELK Studios in our database. We recommend you check out other slots from ELK Studios:
Other Casino Software Providers
We also have slot machines from other casino software providers in our database. Many of them can give you a whole new perspective on slots gambling
References
Our editorial team
All our content is written by our editorial team and checked before publication. We play the games ourselves, verify licences and withdrawal terms, and update every review as soon as something changes.
Under the supervision of Editor-in-Chief Mark Rylance