Boomberries RTP is 94% — ELK Studios' High volatility 6-reel Cluster Pays slot with an explosive berry mechanic and a 25,000x max win. Releases June 24, 2026. Play the free demo below.
18+ | T&Cs Apply | Gamble Responsibly
Boomberries is ELK Studios doing what they do best — building a distinct mechanical identity around a strong visual concept. The 25,000x max win is exceptional for a 6-reel Cluster Pays format and positions the game among the highest-ceiling ELK releases in recent years. The 94% RTP is the clear trade-off: it sits below the 96% industry benchmark and players should factor that into their bankroll expectations. What ELK consistently delivers is a bonus round that earns its ceiling — and based on the pre-release build, Boomberries is on track to do the same. Recommended for High volatility players who prioritise ceiling over long-run return.
18+ | T&Cs Apply | Gamble Responsibly
Rainbet Casino Review →
18+ | T&Cs Apply | Gamble Responsibly
18+ | T&Cs Apply | Gamble Responsibly
Boomberries is an upcoming High volatility slot from ELK Studios, scheduled for June 24, 2026. ELK is a Swedish provider with a strong track record of mechanically innovative releases — titles like Nitropolis and Cygnus demonstrated their ability to push the format beyond standard cluster pays templates. Boomberries brings an explosive berry theme to a 6-reel Cluster Pays grid, where the "Boom" mechanic — based on pre-release materials — triggers chain-reaction explosions that clear symbols and sustain cascade sequences.
Key stats: 94% RTP, High volatility, 25,000x max win, 6 reels, Cluster Pays, $0.20–$100 bet range. The 25,000x max win is the headline figure — it places Boomberries among ELK's highest-ceiling releases and is competitive with the top tier of cluster pays titles from any provider. The 94% RTP is the acknowledged compromise: ELK redirects the theoretical return into peak-win potential, a trade-off common across their high-ceiling catalogue. The $0.20 minimum bet keeps the game accessible despite the ambitious ceiling.
Boomberries — base game.
The core Boomberries mechanic triggers explosive chain reactions when berries cluster on the 6-reel grid. Each explosion clears surrounding symbols and enables new symbols to fall into place, extending cascade sequences beyond what standard cluster formation would allow. This creates multi-stage win events within a single spin — ELK's signature approach to volatile return distribution.
Six reels give Boomberries a wider win surface than the 5-reel standard, creating more space for multi-cluster formations and extended cascade chains. Cluster Pays removes fixed paylines in favour of symbol adjacency — winning combinations form wherever matching symbols connect horizontally or vertically. This format rewards full-grid coverage and penalises isolated symbol placements.
The 25,000x ceiling is exceptional — at $0.20 minimum bet that's $5,000, and at $100 maximum it reaches $2,500,000. ELK's approach to max win delivery involves multiplier accumulation through cascade chains during bonus rounds, where each successive wave builds the multiplier to the point where a premium cluster completes the ceiling outcome.
ELK Studios applies a consistent philosophy across their high-ceiling titles: compress the long-run return to fund a higher peak-win multiplier. At 94%, Boomberries sits 2 percentage points below the 96% industry benchmark. For players who play short, high-variance sessions targeting the bonus round, this is an acceptable trade. For high-volume grinders, the RTP gap matters.
The Boomberries free spins bonus is where the explosion mechanic reaches its full potential. Each cascade during the bonus produces a boom trigger that clears additional symbols from the grid, extending the chain and adding new symbols into the open positions. This creates self-sustaining cascade sequences where a single strong landing can produce five or more consecutive chain events — each adding to the win total and resetting the grid for the next explosion.
The multiplier structure during free spins compounds with each cascade chain. A bonus round that runs through multiple explosion sequences will see the multiplier climb rapidly — the 25,000x max win is the product of a sustained chain with a high-value cluster completing during an elevated multiplier phase. Most bonus sessions will deliver outcomes in the 20x–200x range, with strong runs pushing significantly higher when early explosions trigger the multiplier buildup early in the round.
Boomberries — bonus round.
