Release the Kraken slot machine by Pragmatic Play
Demo play uses virtual credits, NO real-money play and NO withdrawals
Release date
2020
Min. bet
0.2
Max. bet
100
Max. payout
1000000
Genre
Treasures
RTP (%):
96.5
Coin value
0.01
Reels
5
Rows
4
Volatility
high
Paylines
40
Mechanics
Free Spins , Wild , Scatter , Mystery Symbol , Bonus Buy
Release the Kraken slot review: RTP, Bonuses & Max Win
Release the Kraken slot is a deep-sea adventure slot that launched in the 2020s and quickly found an audience among bonus hunters and highβvariance players. The game leans into an ominous underwater theme with stacked symbols, free spins and even a bonusβbuy option, making it suitable for both newcomers who want straightforward controls and veterans who chase bigger swings. The provider lists the RTP at around 96.5% with high volatility, so expect long dry spells interspersed with explosive bonus rounds and large stacked-symbol payouts.
Bonus features: free spins, wilds, stacked symbols and bonus buy
Release the Krakenβs bonus suite is the engine that drives the excitement. The main features to watch for are free spins (triggered by scatters), a generous Wild that substitutes for other symbols, stacked symbols that can fill entire reels, and a bonus buy for players who prefer to jump straight into the action. Free spins are the primary route to big wins: when you land the required number of scatters you enter a bonus round where multipliers can increase and retriggers are possible, producing sustained winning potential.
Stacked symbols are particularly important here - when a highβvalue symbol or wild stacks across a reel it can instantly turn a modest spin into a huge payout. The bonus buy is set at a fixed cost and sends you directly to the free spins round, which is handy for players who dislike long dry spells. In practice free spins donβt trigger extremely often, but when they do the session becomes noticeably more volatile and entertaining.
Theme, graphics and sound
The slotβs atmosphere is all about the dark ocean depths: seaweed, distant bioluminescent creatures and creaking shipwreck vibes. Graphics arenβt blockbuster level but are tidy and effective - smooth symbol artwork, bubble animations and a dramatic Kraken entrance animation give the game personality without being overblown. Visual highlights like large stacked symbols and a showy wild effect keep spins visually interesting and reduce any sense of monotony during longer sessions.
Sound design supports the tension with a moody, cinematic soundtrack and subtle underwater tones that build atmosphere without fatiguing the ears. Sound cues during big hits and the free spins round help reinforce the emotional peaks, so the audio complements the gameplay rather than distracting from it. Overall, the presentation matches the gameβs intent: a sluggish, suspenseful sea saga that peaks during bonus play.
Gameplay and mechanics
Gameplay in Release the Kraken is straightforward and userβfriendly: a standard reel grid with familiar paylines, stepβbased bet selection, and an autoplay option for handsβoff spins. Key mechanics include stacked symbols, a Wild (logo/bubbles) that substitutes for missing symbols, Scatter symbols that trigger free spins, and the optional bonus buy. The game emphasizes intermittent big payouts rather than a steady trickle - stacks and free spins create the possibility of jumpy, highβimpact wins rather than many small wins.
Because stacked symbols can cover entire reels, a single spin can produce multiple substantial payouts at once; that design is what makes the game feel explosive when it lines up. There are no complex extra layers (no cascading reels or cluster pays noted in the base mechanics), which keeps the interface approachable while still offering enough volatility for players who want to chase larger returns.
Symbols and paytable
Symbols split into lowβvalue card royals (J, Q, K, A) and higherβvalue sea creatures: green fish, blue fish, turtle, shark, plus the game logo/bubbles which acts as the Wild. Wilds replace missing symbols to complete combinations and carry strong payout values on their own. Stacked symbols sometimes occupy a whole reel and dramatically increase the chance of large combinations across multiple paylines.
- J, Q - 3: 25, 4: 50, 5: 200
- K, A - 3: 50, 4: 100, 5: 400
- Green fish - 3: 100, 4: 300, 5: 500
- Blue fish - 3: 100, 4: 300, 5: 750
- Turtle - 3: 200, 4: 400, 5: 1 000
- Shark - 3: 200, 4: 500, 5: 1 250
- Game logo / Bubbles (Wild) - 3: 250, 4: 1 000, 5: 2 500
The numbers above represent payouts for 3/4/5 matching symbols on a payline and are listed in the same units as your line bet (for example, if you bet $1 per line the values correspond to dollar payouts). The Wild is especially lucrative by itself and helps convert nearβmisses into full wins when it substitutes. Scatter symbols are the trigger for the free spins feature and do not follow the standard payline rules when activating bonuses.
RTP, volatility and win potential
The provider states an RTP of about 96.5% and classifies the game as high volatility. In plain terms, that means you can expect extended stretches without major payouts, but when free spins or large stacked symbols hit the returns can be significant. The top paytable value is 2,500Γ the line bet for five Wild symbols - while that doesnβt guarantee huge progressive jackpots, it demonstrates the slotβs capacity for big singleβspin payouts. Players have reported the occasional x1000+ sessions, though those are not the norm.
High volatility suits players who prefer fewer but larger wins and are prepared to weather dry runs. If you prefer frequent small wins, this slot may feel slow. Responsible gambling note: always play within your limits - this is a highβvolatility slot that can run dry between big hits.
Demo mode and availability
Most operators carry a demo version of Release the Kraken, letting you try the interface, learn the paytable, and test feature frequency without risking real money. The demo is a recommended first step, especially given the gameβs high variance and the presence of a bonus buy option. Practicing in demo mode helps you judge whether the bet range and feature pacing suit your bankroll and style.
The game performs well on mobile devices: controls are adapted for touch, buttons are clear and sizeable, and animations remain smooth even on budget smartphones. Sound and visual effects are optimized so sessions feel responsive on both desktop and mobile slot play.
Editorial Rating
4.5
Pros

RTP about 96.5%

Stacked symbols for big wins

Free spins with retriggers

Mobile-friendly smooth play
Cons

High volatility means dry spells

Bonus buy costs may be steep

Graphics not blockbuster level
Conclusion - who should play Release the Kraken?
Release the Kraken is best for players who enjoy a moody, immersive theme combined with punchy bonus potential. The stacked symbols and free spins deliver the gameβs biggest moments, while the bonus buy gives impatient players a direct route to the action. Itβs not a casual βspin for tiny winsβ experience - itβs built around the suspense of waiting for the right combination and then enjoying a big payoff when it arrives.
If you like highβvariance slots with occasional explosive rounds, try the demo first and then consider real money play with a clear staking plan. The gameβs aesthetic and mechanics work well together: atmospheric presentation, easy-to-use gameplay, and bonus mechanics designed to create memorable, highβimpact sessions.