Pragmatic Play · Slots

Release the Kraken

4.6
Gambafish score4.6 / 5
RTP95.5% Volatilityhigh Max win10,000x

Release the Kraken is Pragmatic Play's deep-sea high-volatility slot on a 5x4 grid with 20 paylines in the base game and 40 during free spins. RTP varies by build: Pragmatic's published default is 96.50%, but the build most casinos run returns about 95.50%, so the figure at your casino matters. The maximum win is 10,000x your stake. The free-spins round is where the game's value concentrates: you pick treasure chests to set the number of spins, then every wild that lands roams to a new position on each spin and lifts a win multiplier by 1x for each wild on the grid. Those roaming wilds and the building multiplier are the game's central mechanic.

Key takeaways

  • RTP: ~95.50% on the build most casinos run; 96.50% is Pragmatic's published default, with lower configurations also in circulation. Verify the active version in the game's info panel.
  • Volatility: high. Base-game payouts are modest on 20 fixed paylines; value concentrates in the Roaming Kraken free spins and the building win multiplier.
  • Max win: 10,000x your stake, reachable in the Roaming Kraken free spins when several roaming wilds stack and the win multiplier climbs.
  • Roaming wilds: every wild in free spins moves to a new position on each spin and raises a win multiplier by 1x for each wild on the grid, so more wilds mean a higher multiplier.
  • Paylines double in free spins: 20 paylines in the base game expand to 40 during the bonus round, increasing the win coverage on the same 5x4 grid.

Play Release the Kraken for free

Try the full game in demo mode: play money only, no deposit, no real winnings. Test the features and volatility before you stake anything real.

Release the Kraken · free demo, play money only

Play Release the Kraken for real money

The best casinos to play Release the Kraken, ranked on payout speed, licence and bonus fairness.

1

Feature-rich crypto casino with deep VIP rakeback and a daily BTC faucet, but a 10,000 USDT monthly withdrawal cap.

4.7
CuraçaoFast payoutLive dealer
4.7
GambafishScore
Visit site Read review

Independently tested ·verified Est. 2022
2

One of crypto gambling's longest-running casinos with fast payouts, but 40x wagering and a 60-country block list.

4.6
CuraçaoFast payoutLive dealer
4.6
GambafishScore
Visit site Read review

Independently tested ·verified Est. 2014
3

High-volume crypto casino with instant uncapped payouts and provably fair Originals, but mandatory KYC and blocked in 40-plus countries.

4.6
CuraçaoFast payoutLive dealer
4.6
GambafishScore
Visit site Read review

Independently tested ·verified Est. 2017

Grid structure and paylines

Release the Kraken uses a 5-reel, 4-row grid, larger than the standard 5x3 found in most Pragmatic titles of the same era. Base-game paylines are 20; the free-spins round expands these to 40, covering more of the grid area and increasing the win frequency on the same symbol landing. The sea-creature theme features a kraken, shark, turtle, and tropical fish as the higher-paying symbols, with card royals as the low-pays. The kraken logo is the most valuable regular symbol.

The Roaming Kraken free spins

The free-spins round is the game’s defining feature. It triggers when bonus symbols land on reels one and three with the Free Spins symbol on reel five. Before the round begins you pick from a set of treasure chests, and the chest you choose sets how many free spins you start with.

Once the spins begin, the grid runs on 40 paylines instead of the base 20. The key mechanic is the roaming wild: any wild that lands stays on screen for the rest of the round but moves to a new random position on every spin, so its payline coverage changes spin to spin. Each wild on the grid also adds 1x to a running win multiplier, so the more wilds in play, the higher every win is multiplied.

A round that keeps two or three wilds roaming for several spins builds a meaningful multiplier, and that is where the larger free-spins payouts come from. A round with few wilds and a low multiplier returns modestly. The variance is in how many wilds stay in play and how high the multiplier climbs before the spins run out.

RTP and payline expansion

The 96.50% figure is Pragmatic’s published default, consistent with its stronger-performing high-volatility titles, but the build most casinos run returns about 95.50%, with lower configurations beneath it. The payline doubling from 20 to 40 in free spins is a mechanical lever that increases win coverage without changing the reel layout: the 40-payline evaluation applies to the same 5x4 grid, simply counting more possible left-to-right combinations. Combined with the roaming wilds and the building multiplier, free-spins sessions can produce substantially more coverage than the base game.

These build differences apply here as they do across Pragmatic’s catalogue, and the info panel at your casino shows the active version. The gap between that reduced build and the 96.50% default compounds in a high-volatility game where the free-spins trigger is infrequent.

Volatility and the free-spins trigger rate

High volatility means the base game is not the primary source of returns. The 20 paylines on a 5x4 grid produce base-game wins, but they are modest relative to the stakes required to sustain a session long enough to trigger free spins. The trigger frequency determines how often the bonus arrives, and the roaming wilds and multiplier determine the payout. A session with a few short free-spins rounds at low multipliers looks very different from one where the wilds roam for many spins and the multiplier climbs high.

Sizing stakes to allow for a meaningful number of spins before expecting a bonus trigger is the practical approach to the game’s volatility profile.

Verdict: who Release the Kraken suits

Release the Kraken suits players who like a roaming-wild free-spins feature with a building multiplier and can sit through a quiet base game to reach it. At its 96.50% premium build it’s a strong high-volatility Pragmatic title, and the 10,000x ceiling is meaningful.

Skip it if you want frequent action or a steady session. The base game on 20 paylines is modest, the free-spins trigger is infrequent, and many casinos run the reduced 95.50% build rather than the 96.50% default, so confirm the version before you commit.

Where to play online

Release the Kraken is available at crypto casinos carrying Pragmatic Play’s library. For casinos where you can verify the active RTP configuration and deposit in Bitcoin or other cryptocurrencies, see our crypto casinos page. For live table games alongside slots, see our live dealer page.

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Frequently asked questions

Is Release the Kraken 2 a sequel, and who developed it?

Yes. Release the Kraken 2 is a Pragmatic Play sequel to this slot, made by the same studio. It keeps the sea-creature theme and the roaming-wild free-spins idea but adds new mechanics on top. If you like the roaming-wild format in the original, the sequel is the natural next title; both run at casinos carrying Pragmatic Play's library. There is also a separate Release the Kraken Megaways, a distinct Megaways-format release.

What is the RTP of Release the Kraken, and does any slot reach 99%?

Pragmatic's published default is 96.50%, above the slot average, but the build most casinos run returns about 95.50%, and lower configurations also circulate, so the figure in the info panel is the one that applies. None reach the 99% some searches chase: the genuine near-99% returns belong to vintage optimal-play classics like Mega Joker and provably fair originals. Among standard slots 96.50% is strong, but a reduced Kraken build erodes that on an already high-variance game.

How do you find out a slot machine's RTP?

Open the game's information, rules, or paytable panel, usually an 'i' or menu icon, and read the return-to-player percentage; every licensed online slot lists it there. That panel shows the exact build your casino is running, which matters on Release the Kraken because Pragmatic ships it at more than one RTP. It's the only reliable source: ignore review-site headline figures and 'hot/cold' claims, which may quote a different build than your casino runs.

How do you win on Release the Kraken?

There's no strategy that beats the house edge, since every spin is decided by a certified random generator. The wins concentrate in the Roaming Kraken free spins, where each wild on the grid adds 1x to a building multiplier, so a round that keeps several wilds roaming pays the most. What you control is the RTP build and your bankroll: play the highest version you can find, stake small relative to your budget so you can survive to the bonus, and don't raise stakes to chase the feature.

Is Release the Kraken the slot the same as the Kraken crypto app?

No. Release the Kraken is a Pragmatic Play online slot, reviewed here. The Kraken app whose trustworthiness people search for is a separate cryptocurrency exchange with no connection to the game. The phrase itself comes from the film Clash of the Titans, not the slot. If you searched for the exchange's safety or to 'spawn a kraken event' in a video game, those are different products entirely from this sea-monster slot.

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