Slots Like Big Bang Bonus: Five Dynamite Levels and a 5,050x Ceiling
Big Bang Bonus: Hold & Win is OctoPlay’s trip down a gold mine, played across five reels and four rows with 20 paylines running left to right, a headline RTP of 95.77% and a published ceiling of 5,050x the stake. Stakes open at £0.10 and run up to around £100 a spin depending on the operator. The pull is not the base game, which is deliberately quiet, but the ladder of five Dynamite levels above the reels: every time you finish a Hold & Win round the game climbs a rung, and each rung adds a multiplier to every Gold Pan, Mystery and jackpot value you collect from then on. Four fixed jackpots sit alongside it, Mini at 20x through to Grand at 1,000x, and the level is stored between sessions at that stake. Anyone hunting for slots like Big Bang Bonus is generally after that combination of a locked-symbol respin round and something that gets measurably better the longer you stay with it.
Where to Play
18+ only. T&Cs apply. Please gamble responsibly.
How the Game Works
Reviewed by Paul StonePublished: July 2026
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The framing is a working mine cut into red desert rock, with a timber pit head above the reels, a crate of TNT propped against the wall and coloured gems poking out of the spoil heap. OctoPlay has gone for a warm cartoon look rather than anything gritty, and the whole set is lit as though the sun is going down outside the tunnel mouth. It reads well on a phone, which matters more than it used to, and the four jackpot gems sit high enough above the grid that they are never competing with the symbols for attention.
Underneath the artwork the base game is deliberately plain. Twenty fixed lines pay left to right, the wild substitutes for everything except the three special symbols, and there is no cascade, no ways-to-win count and no multiplier trail to track. That plainness is a design choice rather than an oversight, because almost all of this game’s money is parked in one place. Gold Pan symbols carry cash values of 1x to 5x the stake and Mystery symbols hide 10x, 12x or 15x, but neither pays a penny when it lands in ordinary play. Both are collected only inside the Hold & Win round, which means a spin can look busy and still be worth nothing.
What the game gives you instead is a visible sense of progress. Every special symbol that lands during normal play throws gold chunks up over the reels, one chunk for each point of its multiplier, and every chunk has its own chance of setting the bonus off. It is a neat piece of design because it converts a dead spin into something that looks like it is doing work, and OctoPlay is admirably blunt in its own rules that the animation is decoration and does not change the odds. Worth remembering when the screen is raining gold and nothing happens.
Symbols and Paytable
Ten through Ace make up the bottom of the ladder, carved as cracked purple rock so they stay legible at four rows deep and at speed. Above them come the mining tools: a shovel loaded with blue and purple crystals, a pickaxe with a rag wrapped round the handle, a minecart heaped with gold, and a red sack that is the best of the ordinary symbols. OctoPlay does not publish a per-symbol pay table on its game page, so treat any figure you read elsewhere with care. The one number that is quoted in circulation is a full line of five wilds paying 50x the stake, which tells you plenty on its own: the line game here is a rounding error next to the bonus, and it is meant to be.
Bonus Features Explained
The Hold & Win Round
Six or more Gold Pan, Mystery or jackpot symbols landing together guarantees the feature. Three free spins begin on a reel set that contains only those symbols plus blanks. Anything that is not a blank locks where it falls and resets the counter back to three, and up to six fresh Gold Pans can arrive on any single respin. Nothing pays out along the way. Every value sitting on the board is swept up in one go when the round finishes, either because the counter finally runs to zero or because the grid has filled and no new symbol can land. That last detail is worth reading twice: a filled board ends the feature rather than triggering a separate grand prize, so covering all twenty positions is not the jackpot condition it is on a lot of rival games.
The Four Jackpots
Mini pays 20x, Minor 50x, Major 100x and Grand 1,000x the stake. They are fixed multiples rather than a pooled prize, so the ratio is identical whether you are staking ten pence or a hundred pounds. Jackpot symbols are only collected during the Hold & Win round, and OctoPlay limits each spin to one symbol per jackpot tier, so you will not see two Grands land together. Because the Dynamite multiplier applies to jackpot symbols as well as pans, the arithmetic behind the 5,050x maximum stops being mysterious: a Grand collected at the top level is worth 5,000x on its own.
The Dynamite Levels
This is the mechanic worth caring about. Five sticks of dynamite sit in the rock above the reels, numbered one to five, and play begins at level one. Complete a Hold & Win round and the game moves up a level. Each level unlocks multipliers equal to that level for Gold Pan, Mystery and jackpot symbols, so at level three a 5x pan is collected as 15x and a Major becomes 300x. The level is saved across sessions for that game at those stake settings, which is an unusual amount of persistence for a slot and the single strongest reason to keep your stake consistent rather than jumping around. It also means the version of the game a brand new player sees is the weakest one it has, and a listed RTP figure is an average across all five rungs rather than a description of what the opening hour feels like.
Double Chance
OctoPlay sells a side bet called Double Chance across its catalogue and it appears here as a toggle beside the reels, costing an extra 50% of the stake per round in exchange for a better shot at triggering the feature. It nudges the theoretical return from 95.77% to 95.85%. UK-licensed operators generally do not carry stake-boost options of this type under current Gambling Commission rules, so British players should assume the standard build and check the game information screen if they see anything different.
Pros and Cons
Pros
- The Dynamite ladder is genuine persistence rather than a cosmetic meter, and it survives closing the game, which almost nothing else in this category offers
- A 5,050x ceiling is respectable for a Hold & Win release and the route to it is transparent once you understand the level multiplier
- Fixed jackpots priced in stake multiples keep a ten pence player and a hundred pound player chasing the same relative prizes
- The rules OctoPlay publishes are unusually clear, including an explicit note that the gold chunk animation does not affect the trigger chance
- The artwork holds up on a small screen, with the jackpot gems kept well clear of the grid rather than crowding it
Cons
- 95.77% is under the going rate for a 2025 release, and the 95.85% version needs a side bet UK players are unlikely to be offered
- A 15.1% hit rate does not match the low volatility label some listings attach to it, and the base game can feel genuinely empty
- Gold Pan and Mystery values pay nothing outside the bonus, so a screen full of special symbols can still return zero
- Filling the grid ends the round instead of awarding a top prize, which is the opposite of what regular players of this format will expect
- Starting at level one means a new player is playing a materially weaker game than someone who has already climbed the ladder at that stake
Game Screenshot
OctoPlay’s own capture of the base game. The four jackpot gems read Mini 20x, Grand 1000x, Major 100x and Minor 50x, with the numbered Dynamite trail beneath them showing level 1 lit and levels 2 to 5 still dark. The Big Bang Bonus sign caps the 5×4 grid, and the right-hand reel holds two gold-filled minecarts above a red sack. The header shows a play-money balance of €1,000.00 and the stake button reads €2.00, so the values here are in euros rather than pounds.
The Hold & Win Round in Action
The bonus round part-filled. Eight Gold Pan discs are locked on the grid reading 2, 2, 2, 2, 6, 6, 6 and 8, alongside a green Major jackpot symbol on the fourth reel, while the remaining positions show the purple rock blanks. The respin counter above the grid displays 1, 2, 3 and the Dynamite trail still shows level 1. Balance reads €998.00 with a €2.00 stake.
Games with Free Play Demo
The demo below runs the full game on play money with no registration. It is more useful here than on most slots, because the only way to judge how the Dynamite ladder actually feels is to sit through enough bonus rounds to climb a rung or two and watch the collected values change. 18+.
Game Information
Expert Take
Reception since the autumn 2025 release has been polite rather than enthusiastic, and that seems about right. The persistent level system is the part that deserves credit, because it answers a real complaint about the Hold & Win genre: that every session starts and ends in exactly the same place. Storing progress at the stake level is a small idea with a big effect on how a game is played, and it gives regulars something to protect. The reservations are equally clear. A 95.77% return is behind where the market has settled, the hit rate is thinner than the low volatility label implies, and locking all of the pan and mystery values behind the bonus makes the base game an unusually long wait. It is a well-built slot with an honest gimmick, held back by numbers that are merely acceptable.
Similar Slots to Try
The obvious neighbour on setting, though Red Tiger builds its mine round on wandering wilds and a dynamite bonus wheel rather than a board that fills with cash discs.
If the coin-lock respins are what you came for, this is the closest maths on the site, with four fixed tiers sitting above the reels and the same three-respin reset rule.
A calmer, older take on the pit-head theme where the payouts come from free spins and a multiplier trail instead of collected pan values.
ReelPlay locks whole reels rather than single positions, so the gold nuggets stack up in columns and the multiplier does the heavy lifting.
About the Developer
OctoPlay operates out of Malta as Gameshop Limited and has been shipping games since late 2022, with a catalogue that had passed 80 titles by the middle of 2026. What is easy to miss from the game list alone is how much of the studio’s recent effort has gone into regulatory reach rather than output. Alongside the European approvals it started with, it picked up an Ontario manufacturer licence in November 2024, a Danish game provider licence a month later, a Michigan internet gaming supplier licence in February 2025, and through 2026 has added interim or temporary approvals in West Virginia, Delaware and Alberta. That is a supplier building distribution for the long haul rather than one chasing a quick European run.
Big Bang Bonus also shows how OctoPlay packages its own mechanics as products. Double Chance, the side bet attached to this game, is listed on the studio’s site as a standalone product rather than a one-off feature, and the same is true of its Jackpot Hunt system. Reusing a small number of well-tested components across many themes is how a team this size manages to release at the pace it does, and it explains why the Hold & Win structure keeps reappearing under different artwork. The Dynamite ladder is the piece that has been built specifically for this title, and it is the most interesting thing in it. The full studio write-up, including the licence numbers and the titles not yet covered here, sits on the OctoPlay page.
The studio running a spin-counter idea very close to the Dynamite ladder, except there the meter adds new symbols to the reels instead of raising multipliers.
Proof that OctoPlay does build outside the coin-collect format, feeding three separate fixed jackpots from colour-coded wild scarabs.
The studio profile, with the full licence list and the Hold & Win releases that have not been written up here yet.
Big Bang Bonus: Hold & Win Key Stats
Big Bang Bonus: Hold & Win slot information last reviewed: July 2026
| Big Bang Bonus: Hold & Win Slot Info | |
|---|---|
| Name | Big Bang Bonus: Hold & Win |
| Provider | OctoPlay |
| Developer Rank | Third OctoPlay title reviewed on SlotsLike. The studio remains a small-to-mid supplier by catalogue size, roughly 80 titles since 2022 against the thousands held by the established names, and this release sits in its core Hold & Win line rather than its licensed or experimental output |
| RTP | 95.77% as standard, or 95.85% with Double Chance switched on, an option British players are unlikely to see under current Gambling Commission rules. Reduced builds exist, so read the game information screen |
| RTP Category | Medium-Low |
| RTP Rank | Two tenths of a percent short of the 96.00% entry point for the band above, so it lands near the ceiling of the site’s 94.00% to 95.99% band while still trailing what most 2025 releases shipped with |
| Feature Description | A locked-symbol Hold & Win round with three respins that reset on every fresh symbol, four fixed jackpots from Mini at 20x to Grand at 1,000x, Gold Pan cash values of 1x to 5x and Mystery values of 10x to 15x collected only inside the bonus, and a five-rung Dynamite ladder that adds a multiplier equal to the current level and saves between sessions |
| Feature Categories | Hold and Win Respins, Fixed Jackpots, Cash Collect Symbols, Mystery Symbols, Persistent Level Multipliers |
| Reels | 5 |
| Rows | 4 |
| Paylines | 20 fixed paylines, paying left to right |
| Volatility | Low (one listing records it as low to medium; see the note below) |
| Volatility Rank | Sits at the calm end of the site’s scale on the published label, but the quoted 15.1% hit frequency is sparse for that band and all pan and mystery values are held back until the bonus, so it plays busier at the top than the label suggests |
| Min Bet | £0.10 |
| Max Bet | £100 (one tracker records a higher £150 ceiling; operator caps vary) |
| Max Win | 5,050x stake |
| Release Date | Autumn 2025 (one tracker records 17 September 2025, another 13 October 2025, most likely a staggered operator rollout) |
| Slotslike Rank | New listing, not yet ranked among the site’s 4,300+ games (View Top 100) |
Slots with the Same Features
Hold and Win Respin Slots
Every studio working this format has to answer the same three questions: what starts the round, what puts spins back on the counter, and what a completely covered board is actually worth. Our hold and win slots directory lines those answers up next to each other.
Fortune Factory runs its collect round across linked reel sets, so a single respin sequence can be resolving in more than one place at once.
Six medallions on a 5×3 board start the same three-respin clock, on a smaller grid that fills far sooner than twenty positions.
Print Studios needs a 2×2 block to start the round rather than a symbol count, which changes what a promising near miss actually looks like.
Fixed Jackpot Slots
Nothing here is pooled. Mini, Minor, Major and Grand are printed as stake multiples and paid out of the game maths itself, which is the dividing line between these and the networked progressives also gathered on our jackpot slots page.
Blueprint prints its Minor, Major and Grand values straight onto the discs, so the tiers are read off the grid rather than from plaques at the side.
Here the top tier is reserved for covering every position, which is a harder condition than collecting one matching jackpot symbol.
Mining and Prospecting Slots
The pit head, the TNT crate and the gem-loaded spoil heap place it squarely in the mining theme, one of the oldest settings in the medium and still one of the busiest.
The quarry slot that made the theme a fixture, built on cascading blocks and a rising multiplier rather than anything that locks in place.
A lighter, cartoonish dig with a straightforward free spins round, useful if the layered meters here feel like too much bookkeeping.
Betsoft sticks to expanding wilds and a small line-pay ladder, which is roughly where the genre sat before collection meters arrived.
Frequently Asked Questions
How does the Hold & Win bonus work in Big Bang Bonus?
Landing six or more Gold Pan, Mystery or Jackpot symbols on the same spin guarantees the round, and it can also start at random when one of the gold chunks thrown above the reels catches. The feature opens with three free spins on a stripped-back reel set holding only Gold Pans, Mystery symbols, jackpot symbols and blanks. Anything that is not a blank locks in place and resets the counter to three. Nothing is paid as it lands: every value on the board is collected together when the round closes, either because the counter empties or because all twenty positions are covered.
What is the RTP of Big Bang Bonus: Hold & Win?
OctoPlay publishes 95.77% as the standard build, short of the 96% or so that most UK-facing releases were launching with through 2025. Switching on OctoPlay’s Double Chance side bet, which adds 50% to the cost of every round, lifts it to 95.85%. Operators are free to run reduced builds, so read the in-game information screen rather than trusting a third-party listing.
What is the maximum win on Big Bang Bonus: Hold & Win?
OctoPlay publishes 5,050x the stake. The Grand jackpot alone pays 1,000x, so the ceiling is only reachable once the Dynamite ladder has been climbed and the level multiplier is being applied to the collected values.
How volatile is Big Bang Bonus: Hold & Win?
Listings disagree. One records it plainly as low, another as low to medium. The quoted hit frequency of 15.1% is on the sparse side for a game carrying a low label, and because Gold Pan values are only ever paid inside the bonus, long stretches of the base game return nothing at all. Treat it as calmer than a 10,000x chase but not as steady as the word low suggests.
What are the best slots like Big Bang Bonus: Hold & Win?
Gold Blitz is the nearest match on mechanics, with the same locked-disc respins and a four-tier prize board. Dynamite Riches and Mining Fever cover the mine setting from different angles, and All My Gold is worth a look if the appeal is watching gold values stack up rather than the jackpot ladder itself.
Can I play Big Bang Bonus: Hold & Win for free?
You can, and the play-money version sits on this page with no sign-up needed. It is worth more than the usual try-before-you-buy here, because the Dynamite level is stored per stake setting and the demo shows you honestly how many bonus rounds a rung actually costs.
Who makes Big Bang Bonus: Hold & Win?
OctoPlay, the Malta-based supplier trading as Gameshop Limited that opened its doors in October 2022 and holds a UK Gambling Commission supplier licence granted in March 2023.
Do the Dynamite levels carry over between sessions?
OctoPlay’s own rules say the level is saved across play sessions for that game at the same stake settings. Change your stake and you are looking at a separate saved level, which is worth knowing before you jump between bet sizes chasing a higher multiplier.
Our Verdict on Big Bang Bonus: Hold & Win
The Dynamite ladder is a better idea than the game around it, and that is not a criticism so much as a description. Persistence that survives closing the tab gives a slot a shape most of this genre lacks, and OctoPlay deserves credit for writing the rules plainly instead of burying them. The trouble is everything the ladder multiplies starts from a 95.77% return, a 15.1% hit rate and a base game that pays nothing on its special symbols, so the climb from level one is a longer and quieter grind than the artwork lets on. If you play at one consistent stake and stick with it, this rewards that habit more than almost anything else in the category. If you dip in and out at different bet sizes, you will only ever see the weakest version of it.
SlotsLike rating: 7/10