Iron Bank sends a CasinoGrounds heist crew to Havana on a 6×4 ways grid. Three Bonus Safes open a choice between three Free Spins routes, so the real decision is which kind of feature state you want to follow: sticky Mystery positions, expanding respin Wilds or reel-by-reel multipliers.
Demo availability may vary by location. You must meet the legal age in your jurisdiction; the free-play button does not record acceptance.
Iron Bank is a high-volatility video slot from Relax Gaming, built with the CasinoGrounds streamer community and released on 5 November 2020. It plays on 6×4 reels with 4,096 ways; three Bonus symbols open a choice of Sticky Mystery Symbols, Expanding Re-Spin Wilds or Progressive Multiplier Wilds, and four to six pay 20×, 200× or 2,000× the stake.
This card follows Relax Gaming’s product page, the 2020 release note, the in-game rules and the attached demo frames. It is not a report of played cash sessions.
For adults of legal gambling age in their location. Set a budget you can afford to lose.
Read full reviewListed RTP builds span 90%–96.20%. This card stores 96.20% as the displayed RTP and the top of the published span; the Buy Feature route is listed at 97.00%. High volatility is the studio label.
Each spin fills six reels with four rows, and wins form on adjacent reels from the left. The Jaguar Wild lands on reels 2–6. Before a spin settles, the game can add 1–3 Bonus symbols, drop Mystery symbols that all reveal the same paying symbol, or place Full Reel Wilds on reels 2–5 with 2×–10× multipliers that multiply together when several contribute.
Three or more Bonus Safes open the Free Spins choice. Four, five or six also pay 20×, 200× or 2,000× the stake before the feature starts. You then pick 8 Sticky Mystery spins, 10 Expanding Wild spins or 12 Multiplier Collect spins. Where offered, the Buy Feature opens the same choice.
This card suits readers who like choosing a bonus mode and following how sticky or multiplier state builds. It is less suited to players who want one simple Free Spins rule or a low-volatility session.
A regular symbol is chosen at random at the start. Whenever it lands on reels 2–6, it turns into a sticky Mystery symbol that reveals the same symbol on every spin. Filling a whole reel with sticky Mystery symbols awards 1 extra Free Spin.
Reels 3 and 4 are marked. A Wild landing there expands to cover the reel and triggers a respin; each win with an expanded Wild raises its multiplier by +1, and both expanded Wilds multiply together.
Reels 2–5 each track coconuts. Coconut Crates add 1–3 to their reel; every two coconuts lift that reel’s Wild multiplier by +1, and completing three progress notches awards 3 extra spins.
High volatility and an optional Buy Feature can move a budget quickly. Set money and time limits before spinning, decide in advance how many feature buys you would accept, and treat each chosen route as a fresh random round.
Price the Buy Feature against your stake
The feature costs a large multiple of the base bet in one decision. Count it in full toward the session limit before buying.
Do not chase with another route
A weak Mystery round does not make the Expanding Wild or Multiplier route due. Each feature is a separate random event.
Read 49,998.9× as potential
The studio headline is a ceiling for the game, not an expected feature result or a reason to raise stakes after losses.
The Bonus Safe opens the Free Spins choice and pays from four of a kind. The Bull leads the regular symbols, followed by pineapple, banana, Akappa bottle and cigar box, then card ranks A to 10. The Jaguar appears as a regular Wild and as a Full Reel Wild.
Three or more open the Free Spins choice. Four, five or six also award 20×, 200× or 2,000× the stake; the attached paytable shows 40 / 400 / 4,000 at the loaded 2.00 preview bet.
Top ordinary paying symbol. Wins need three or more on adjacent reels from the left; the paytable cells at the 2.00 preview bet read 2 / 6 / 20 / 100 for three to six.
Second-tier thematic symbol. Preview cells at the loaded 2.00 bet read 1 / 2 / 6 / 20 for three to six of a kind across the 4,096 ways.
Mid thematic symbol on a red cushion. Paytable cells scale with the selected bet; the attached values are preview figures for the 2.00 demo stake.
Rum-bottle symbol in the mid range. Like every regular symbol, it pays on adjacent reels from reel 1 and can be revealed by Mystery positions.
Lowest of the thematic symbols, ranked just above the card ranks. Preview cells at the 2.00 bet read 0.60 / 1.40 / 3 / 4 for three to six.
Highest card rank. Three to six on adjacent reels pay small amounts; the paytable lists 0.20 to 1.60 at the 2.00 preview bet.
Card-rank low. Shares the three- to five-symbol cells with A, Q, J and 10; only the six-symbol value differs.
Card-rank low in green. Mystery positions can reveal it like any other regular symbol.
Card-rank low in teal. Wins still require a matching symbol on reel 1, where Wilds do not land.
Lowest card rank. Six of a kind reads 0.80 at the 2.00 preview bet, the smallest six-symbol cell on the paytable.
The Jaguar can fill a whole reel on reels 2–5 in the base game with a 2× to 10× multiplier. Multipliers of contributing Full Reel Wilds are multiplied together.
Lands on reels 2–6 and substitutes for all regular paying symbols, not for the Bonus Safe. In Free Spins it expands or carries reel multipliers depending on the chosen route.
Iron Bank’s standard game client lists 96.20% RTP, and Relax Gaming’s product page also lists a German configuration at 90%. This card stores 96.20% as the displayed RTP and 90%–96.20% as the published span, with rtp_text listing both builds from low to high. The Buy Feature is listed separately at 97.00% for the purchased route. Relax Gaming rates volatility high and quotes a 49,998.9× maximum win. RTP remains a long-run average for the stated configuration, not a forecast for a short session.
Relax Gaming
High
49998.9x
High volatility allows long stretches without three Bonus Safes. Base-game modifiers add variety but do not guarantee a feature trigger.
On a phone, open the rules panel and read the RTP figure and bet before spinning. Check which Free Spins route you selected before judging the result.
96.20% is the standard build. The same title can run at 90% in German deployments, so confirm the figure in the loaded game info.
Desktop frames show the modifier splash, the 6×4 base grid with Buy Feature, the paytable start, Mystery Symbols help and a Multiplier Collect spin.
Portrait frames keep the modifier splash, the 6×4 base game, the paytable, Random Bonus and Mystery help and an Expanding Wilds Free Spin.
Grid: six reels, four rows, 4,096 ways
Bonus: 3+ Safes open the three-route choice
Wilds: reels 2–6; Full Reel Wilds on reels 2–5
RTP: confirm 96.20% or 90% on the live panel
Relax Gaming’s Money Train series also stacks persistent bonus state, but Iron Bank asks you to choose the Free Spins route before it begins. Compare whether a mode stores sticky positions, respin Wilds or reel multipliers, how extra spins are earned, and which RTP build the lobby loads before treating titles as alike.
| Game | Return / max win | Volatility | Bonus fit | Watch out for |
|---|---|---|---|---|
| Iron Bank | 90.00%–96.20% / 49998.9x | High | Three Bonus Safes open a choice of 8 Sticky Mystery, 10 Expanding Re-Spin Wild or 12 Multiplier Collect Free Spins; four to six also pay up to 2,000× the stake. | Full Reel Wild multipliers in the base game and the Free Spins Wild multipliers follow different rules, even though both use the Jaguar artwork. |
| Wild Chapo | 90.00%–96.36% / 10,000× | High | Two Bonus symbols open Sticky Wild Re-Spins; three or more open 7, 9 or 11 Free Spins, where every bomb is stored by position for the final spin. | The 10,000× cap applies to a single spin against the base bet. Win multiples after a 60× Buy Feature are still quoted against the base bet, not the purchase price. |
| Wild Chapo 2 | 90.00%–96.10% / 20,000× | High | Three to six Bonus symbols collected in one round open 7 to 25 Free Spins; held Wilds keep counting down and each new Bonus adds a spin. | RTP builds, the 96.50% Bonus Buy figure and the 20,000× cap are separate numbers. A 90% lobby is not the 96.10% standard build. |
When comparing, ask whether the bonus mode is chosen or random and what state carries over from spin to spin.
Relax Gaming launches Nuclear Tumble with Casino Grounds
October 30, 2026
Treat neighbouring heist titles as a shortlist, not as proof. Shared themes do not transfer ways counts, route choices or RTP builds between cards.
Book of 99
Wild Chapo 2
Money Train 3
Money Train 2
Money Train
Wild Chapo
Templar Tumble
I'm a Celebrity: Bushtucker Trial
Publication status: Document-based review against Relax Gaming’s Iron Bank product page, the 2020 release note, the in-game paytable and rules, and the attached demo frames; no cash session is represented.
Studio page and release note. Matched video-slot type, CasinoGrounds collaboration, 5 November 2020 release, high volatility, 20×/200×/2,000× Bonus awards, the three heist routes, Buy Feature, 49,998.9× maximum and German 90% RTP.
In-game rules. Confirmed 6×4 layout, 4,096 ways, random base modifiers, 8/10/12 Free Spins routes, sticky Mystery and reel-multiplier rules and the 96.20% and 97.00% figures.
Preview figures. FUN balance, the 2.00 bet and paytable cash cells on screenshots are labelled as preview figures for the loaded demo beside the published 90%–96.20% RTP span.
Player reviews
Player opinions about gameplay, pacing and usability. Ratings are unweighted and moderated separately from session data.
No player reviews yet. Be the first to rate this game.
Relax Gaming released Iron Bank, built with CasinoGrounds, on 5 November 2020.
Three or more Bonus Safes open a choice of three routes: 8 Sticky Mystery spins, 10 Expanding Re-Spin Wild spins or 12 Multiplier Collect spins.
They award 20×, 200× or 2,000× the stake respectively, in addition to opening the Free Spins choice.
In the base game they can fill reels 2–5 with a 2× to 10× multiplier. When several contribute to the same win, their multipliers are multiplied together.
The standard build lists 96.20% and Relax Gaming also lists a German build at 90%. The Buy Feature route is listed at 97.00%.
Relax Gaming quotes a maximum win of 49,998.9× the bet. It is a ceiling, not an expected outcome of any feature.
slots.tube
Rate Iron Bank
Reviews help other players. Keep feedback about gameplay and usability.
Thank you for your feedback!
Already have an account?
Sign up with GoogleCheck your inbox
We sent a sign-in link to
Incorrect email?
Didn’t get it?
