Release the Kraken slot machine

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Return to Player Minimum Bet Game type Volatility Reels Progressive Jackpot
96.5% 0.20 Video Slots High 5 No
Popularity Maximum Bet Game Provider Bonus Features Paylines Theme
100 Pragmatic Play Yes 20 Kraken

Return to Player

96.5%

Minimum bet

0.20

Slot format

Video Slots

Volatility

High

Number of reels

5

Progressive jackpot

No

Popularity

Maximum bet

100

Provider

Pragmatic Play

Bonus features

Yes

Paylines

20

Theme

Kraken

Release the Kraken online slot game

Release the Kraken is an online slot featuring high-paying symbols, reel-infecting wilds, 3x4 wilds and multipliers in the base game. It also has 2 bonus games: one awards random cash prizes, while the other can offer up to 12 free spins, possible x10 multipliers and 10 sticky wilds.

Theme and Storyline

Release the Kraken is a colourful underwater slot set in a tropical ocean, beside a sunken ship dragged below the waves by the Kraken itself.

Graphics, sound and animation

Bright marine symbols include smiling sharks and grinning tropical fish swimming across the reels. The background is equally scenic, with bubbles rising through the water and underwater plants swaying in the current. Before the first spin, the lively artwork and gentle animation already hint at a game full of action, movement and sound effects.

Release the Kraken 1

Top casinos to play Release the Kraken:

18+. UK only. Deposit £25 to receive 20x10p in Free Spins each day for 7 days on selected games. Claim daily; unclaimed spins expire at midnight, while claimed spins expire after 3 days. Missed days forfeit only that day's spins. Daily winnings are capped at £100. Winnings are bonus funds subject to 10x wagering and expire after 7 days. Exclusions apply. Limit 1 per person, address, device or IP. Gambleaware.org.
18+ | 1st Deposit Only | Minimum deposit: £10 | Maximum bet: £1 | Maximum bonus: £50 | Maximum cashout: X3 the bonus | Maximum cashout from bonus spin winnings: £50 | 10 wagering on bonus and bonus spin winnings | Bonus expires after 2 days | Bonus spins expire after 2 days | Bonus and spin winnings can be played on any slot or scratch game except restricted-bonus games | BeGambleAware.org – Terms and conditions apply
18+. UK only. Deposit £25 to get 20x10p in Free Spins each day for 7 days on selected games. Claim each day; spins expire at midnight if unclaimed and 3 days after claiming. Missing a day forfeits only that day's spins. Daily maximum: £100. Winnings are bonus funds with 10x wagering and a 7-day expiry. Exclusions apply. Limit 1 per person, address, device or IP. Gambleaware.org.
18+ | £10 minimum deposit | £10 in slot bets earns 50 spins on Big Bass Splash | £5 total spin value | £0.10 per spin | Expires in 7 days | Selected payment methods only
18+. New players only. Minimum deposit £20. Welcome offer: 100% bonus match up to £25. Bonus funds are separate from cash funds and carry a 10x wagering requirement (based on the bonus amount). Only bonus funds count towards wagering. Maximum bonus bet £5. Bonus funds must be used within 7 days. Terms apply. Play responsibly. BeGambleAware.org

Gameplay

Release the Kraken uses 5x4 reels and 20 paylines in its online video slot format. During the free spins bonus, another 20 paylines are added, bringing the total to 40 and opening up more chances for winning combinations.

The game has 10 regular symbols that can form winning combinations. The Release the Kraken logo and wild are the highest-paying symbols, and each can pay 500x, 200x or 50x the ‘bet per line’. The remaining 8 regular symbols are the grinning shark, sea turtle, blue tropical fish, yellow tropical fish, A, K, Q and J. Any symbol can be substituted by the ‘bubble wild symbol’ or one of 3 randomly triggered wild features.

Select the ‘i’ button to open the paytable and see symbol payouts. To calculate your ‘bets per line’, multiply the ‘coin value’ by the number of coins wagered, then divide that total by the win amount shown in the paytable.

The reels also have 3 scatter symbols: ‘Bonus’, ‘Free Spins’ and ‘Chest Bonus’. See the next section for details.

Release the Kraken 2

Bonuses and free spins

Random Spins Feature: At a random moment, you may be invited to choose one of 3 tentacles.

  1. Kraken Locking Wilds: The reels keep spinning while 1 of 3 chests is chosen at random. The selected chest awards one of these outcomes: extra wilds on the reels, continued spinning or a x2 multiplier.
  2. Colossal Kraken Wilds: When the reels stop, a 3x4 Kraken wild symbol lands across them.
  3. Infectious Kraken Wilds: 1 or more Kraken wild symbols land on the reels and spread to adjacent positions, potentially covering the reels with wilds.

Sunken Treasure Bonus: Land the ‘Bonus’ symbol on reels 1 and 3, followed by the ‘Chest Bonus’ on reel 5, to trigger the feature. A ‘pick me’ game then presents 3 treasure chests; choose one to reveal a random cash prize.

Roaming Kraken Free Spins: Land the ‘Free Spins’ symbol on reels 1 and 3, then the ‘Chest Bonus’ on reel 5 to trigger this feature. Before the free spins begin, keep choosing chests until one reveals ‘collect’; the free-spins round then starts.

Each chest holds 1, 2 or 3 free spins, so opening more chests before ‘collect’ appears gives you more spins. The maximum award is 12 free spins. The round has 40 paylines and starts with a x1 multiplier, which increases by x1 whenever a wild lands. The maximum multiplier is x10.

Wilds also stay sticky on the reels and move to a new position after each free spin. That means up to 10 wilds and x10 multipliers could be active at once.

Bet sizes, RTP and variance

Adjust your wager using ‘Coins’, ‘Coin Value’ or ‘Total Bet’. The ‘Total Bet’ box allows wagers from 0.20 to 100.00 per spin. Over time, the stated RTP indicates that 96.5% of bets are expected to be returned. Pragmatic Play rates Release the Kraken’s volatility at 4/5, placing it in the medium/high variance game category.

Conclusion

If you enjoy action-packed slots and the prospect of larger wins, Release the Kraken has plenty of features to explore. The base game includes 3 random wild features and 2 bonus games. Free spins are the main feature for pursuing bigger wins, bringing together sticky wilds, multipliers and 40 paylines.

Evan Carrington brings more than 12 years of experience in the iGaming industry, with a focus on reviewing online casinos, assessing slot games and examining player safety. Their work covers casino licensing, RTP, volatility, bonus terms and withdrawal policies. Drawing on practical testing and independent research, Evan provides clear, evidence-based reviews to help players understand gambling platforms, their features and possible risks.

Evan Carrington
Release the Kraken
5.0/5.0
Reviewed by Evan Carrington

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Top casinos
18+. UK only. Deposit £25 to receive 20x10p in Free Spins each day for 7 days on selected games. Claim daily; unclaimed spins expire at midnight, while claimed spins expire after 3 days. Missed days forfeit only that day's spins. Daily winnings are capped at £100. Winnings are bonus funds subject to 10x wagering and expire after 7 days. Exclusions apply. Limit 1 per person, address, device or IP. Gambleaware.org.
18+ | 1st Deposit Only | Minimum deposit: £10 | Maximum bet: £1 | Maximum bonus: £50 | Maximum cashout: X3 the bonus | Maximum cashout from bonus spin winnings: £50 | 10 wagering on bonus and bonus spin winnings | Bonus expires after 2 days | Bonus spins expire after 2 days | Bonus and spin winnings can be played on any slot or scratch game except restricted-bonus games | BeGambleAware.org – Terms and conditions apply
18+. UK only. Deposit £25 to get 20x10p in Free Spins each day for 7 days on selected games. Claim each day; spins expire at midnight if unclaimed and 3 days after claiming. Missing a day forfeits only that day's spins. Daily maximum: £100. Winnings are bonus funds with 10x wagering and a 7-day expiry. Exclusions apply. Limit 1 per person, address, device or IP. Gambleaware.org.
18+ | £10 minimum deposit | £10 in slot bets earns 50 spins on Big Bass Splash | £5 total spin value | £0.10 per spin | Expires in 7 days | Selected payment methods only
18+. New players only. Minimum deposit £20. Welcome offer: 100% bonus match up to £25. Bonus funds are separate from cash funds and carry a 10x wagering requirement (based on the bonus amount). Only bonus funds count towards wagering. Maximum bonus bet £5. Bonus funds must be used within 7 days. Terms apply. Play responsibly. BeGambleAware.org
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