Bonanza is Big Time Gaming's gold-mining slot released in 2016 — the original title that debuted the Megaways system. Per the provider's own game page, it carries an RTP of 96.11%, up to 117,649 ways to win on a 6x7 grid, and a max win of 26,000x the stake.
Verified data
- RTP: 96.11%
- Volatility: 37.94% (provider-published volatility metric)
- Max win: 26,000x the stake
- Grid: 6x7
- Ways to win: 117,649 ways to win (Megaways)
- Paylines: —
Verified official source: beta.bigtimegaming.com (2026-07-06)
About wager-free terms
A note on wager-free terms: no-wagering is a property of a casino's BONUS offer, not of the slot game itself. If a UKGC-licensed operator lists this title inside a wager-free free-spins promotion, the no-wagering condition comes from that operator's specific bonus terms — it is not something the game itself guarantees. Always read the operator's current bonus terms before opting in, and never assume a game carries wager-free status just because it appears on this site.
Verified facts for Bonanza
Official RTP: 96.11% (game page on Big Time Gaming's official platform, beta.bigtimegaming.com). Volatility: 37.94% per the provider's own published metric. Max win: 26,000x the stake. Grid: 6 reels x 7 rows. Ways to win: up to 117,649 (Megaways system). We could not confirm a traditional paylines figure, because the game does not use fixed lines — it uses the Megaways ways-to-win system.
Important: the RTP figure above is the game studio's own global headline figure. UKGC-licensed operators can run a market-specific RTP configuration for the same title, which may differ slightly from the studio's published figure — always check the in-game information panel (the "i" icon) at the operator you actually play at, not just this page. Two further UKGC licence conditions apply to every online slot at every UKGC-licensed operator, regardless of which casino you play at: a mandatory per-spin stake limit (£5 for players aged 25 and over, in force since 9 April 2025; £2 for players aged 18–24, in force since 21 May 2025), and a ban on "bonus buy"/"feature buy" purchase mechanics, which has applied to UK-facing online slots since 2019 under the Gambling Commission's Remote Technical Standards.
What Megaways is, and how Bonanza plays
Bonanza was the first game to use the Megaways system, patented by Big Time Gaming: each of the 6 reels can display between 2 and 7 symbols per spin, varying every spin, which multiplies the number of possible combinations up to a maximum of 117,649 ways to win in a single spin.
The game also uses tumbling reels: after a winning combination, the involved symbols vanish and new symbols drop in, allowing chained wins within the same spin. The bonus round triggers by spelling "GOLD" with scatter symbols: four scatters award 12 free spins, and each additional scatter adds 5 more spins. During free spins, the win multiplier increases with every cascade, with no declared per-spin cap.
Because the reel-count-per-spin is randomised (2 to 7 symbols on each of the 6 reels), the grid itself changes shape on every spin — a mechanic that is now common across the wider Megaways-licensed catalogue (used by other studios under licence from Big Time Gaming) but which Bonanza was the first to bring to market in 2016.
RTP and volatility: Big Time Gaming's figure
The 96.11% RTP is, per Big Time Gaming, the official figure for this title — slightly different from the 96.00% figure repeatedly cited by numerous third-party sites. We have chosen to publish the figure that appears directly on the provider's official game page, verified 06/07/2026, rather than the one more widely circulated among aggregators.
The 37.94% volatility figure is the numerical metric the provider itself publishes (not a textual "high/low" label); combined with a 26,000x max win, the mathematical design aligns with what the industry typically describes as high volatility, though Big Time Gaming does not use that specific textual label on the page reviewed.
Bonanza and wager-free spin offers
Bonanza's Megaways free-spins round has no declared per-spin multiplier cap and the number of spins itself is variable (12 to 32+ depending on scatter count), which makes it one of the harder titles on this page to model into a fixed-value no-wagering spins package — an operator offering, say, "20 wager-free spins on Bonanza" is committing to a fixed number of spins, but the payout from those spins can vary enormously given the uncapped cascading multiplier.
In practice, this is why very-high-volatility Megaways titles like Bonanza more often turn up in deposit-based free-spins offers with a wagering requirement attached, rather than in a headline zero-wagering promotion — the wagering requirement gives the operator room to absorb the payout variance across many players' sessions. Where a no-wagering offer does include a Megaways title, look specifically for a maximum-win or maximum-withdrawal cap in the terms, since that cap is doing the same variance-control job the wagering requirement would otherwise do.
We cannot confirm whether Bonanza currently appears in any specific UKGC-licensed operator's wager-free offer — always check the operator's own current promotional terms before relying on this title being included.
Where to find Bonanza at a UKGC-licensed casino
We have not independently verified which specific UKGC-licensed operators currently carry Bonanza in their live catalogue. See our casino reviews for the current UKGC-licensed shortlist we cover, and confirm the live catalogue directly with the operator before you play if you're specifically after this title.
Where to play at a UKGC-licensed casino
Frequently asked questions
What is the RTP of Bonanza?
Big Time Gaming's official page publishes an RTP of 96.11%. UKGC operators may run their own configuration — check the in-game information panel at the operator.
What is the Megaways system Bonanza uses?
A system patented by Big Time Gaming in which each reel shows a variable number of symbols per spin, generating up to 117,649 different ways to win in Bonanza.
What is the max win on Bonanza?
26,000x the stake, per Big Time Gaming's official game page.
Was Bonanza the first Megaways slot?
Yes, Bonanza (2016) was the original title that debuted Big Time Gaming's Megaways system, later licensed to numerous other studios across the industry.
Why is a Megaways title like Bonanza less common in wager-free offers?
Its uncapped cascading multiplier makes payout variance hard to control without a wagering requirement or a promotional win cap, so it more often appears in deposit-based free-spins offers than in headline zero-wagering promotions.