Bonanza Megaways by Big Time Gaming — Full Review

Bonanza Megaways was released by Big Time Gaming on December 7, 2016 and changed the online slot industry forever. It was the second slot to use the Megaways engine — after Dragon Born Megaways (February 2016) — but it was Bonanza that turned Megaways into a global phenomenon. Often called "the mother of all Megaways slots," its massive success led BTG to license the Megaways mechanic to other developers starting with Blueprint Gaming in 2018.

The concept: each of the 6 reels displays a random number of symbols (2–7) on every spin, creating anywhere from 64 to 117,649 ways to win. Before Megaways, slots had fixed paylines (10, 20, 25, 243). Bonanza introduced variable-reel mechanics that have since been adopted across the entire industry. As of 2026, there are 200+ Megaways slots — from Extra Chilli Megaways (BTG's own sequel) to third-party licenses like Gonzo's Quest Megaways (NetEnt) and Sweet Bonanza Megaways (Pragmatic Play).

The game uses a gold mining theme with 6 main reels plus an extra horizontal mine cart reel above reels 2–5 that adds 4 more symbol positions. Combined with the Reactions (cascading reels) mechanic and an unlimited multiplier during Free Spins, Bonanza created the template for modern high-volatility gameplay.

BTG was acquired by Evolution Gaming in 2021, and Bonanza Megaways is now distributed via the Evolution platform. The game has spawned sequels including Bonanza Falls and Bonanza Megapays.

What Are the Key Numbers for Bonanza Megaways?

The 4.00% house edge means Bonanza Megaways keeps $4.00 of every $100 wagered across millions of spins. This is a mathematical certainty built into the certified paytable — no strategy, timing, or bet pattern changes it. For context, the industry average for video slots is approximately 3-5% house edge, placing Bonanza Megaways in the competitive range at 96.00% RTP.

Bonanza Megaways' 4.00% house edge is above average for video slots. You lose $0.86 more per $100 wagered compared to Immortal Romance (3.14%). Over 1,000 spins at $1/spin, that difference is $8.60. However, the 37.47% hit frequency is remarkably high — higher than Gates of Olympus (~29%) and Sweet Bonanza (~22%). This means more frequent small returns in the base game, which extends sessions despite the higher house edge.

— Galaxy of Slots Editorial Team

How Does Bonanza Megaways Actually Work?

Bonanza Megaways uses 6 main reels plus a horizontal mine cart reel spanning above reels 2–5. Each main reel displays 2 to 7 symbols per spin, randomly determined. The cart reel always shows 4 symbols — one above each of reels 2, 3, 4, and 5. Cart reel symbols count as part of the reel they sit above.

Variable Ways Calculation

The number of ways to win changes every spin:

• Minimum: 2×2×2×2×2×2 = 64 ways (2 symbols per reel)
• Maximum: 7×7×7×7×7×7 = 117,649 ways (7 symbols per reel)

Wins pay for matching symbols on adjacent reels from left to right, starting from reel 1.

Wild Symbol (Dynamite)

The Wild is a stick of dynamite with a lit fuse. It substitutes for all symbols except Scatters. Critically, the Wild only appears on the horizontal mine cart reel (the 4 extra positions above reels 2–5). It never appears on the 6 main reels. This makes Wilds relatively rare — at most 4 positions per spin can potentially hold a Wild.

Reactions (Cascading Reels)

After any winning combination, all winning symbols are removed from the reels. Remaining symbols cascade downward, and new symbols fall from above to fill the gaps. The cart reel also receives new symbols. This process repeats until no new wins form — the same cascading mechanic pioneered by Gonzo's Quest in 2011.

Scatter Trigger (G-O-L-D Letters)

Four separate golden letter tiles — G, O, L, and D — serve as Scatter symbols. They can appear on all reels, including the cart reel. Landing all 4 letters on a single spin triggers Free Spins. Additional Scatters beyond 4 add +5 Free Spins each.

Core Features

• Megaways Engine (up to 117,649 ways)
• Reactions (Cascading Reels)
• Unlimited Multiplier in Free Spins
• Horizontal Mine Cart Reel
• G-O-L-D Scatter Trigger
• Feature Buy (~100x, added later)

What Does Each Symbol Pay in Bonanza Megaways?

All payouts are per-way multipliers of total bet. With up to 117,649 ways active, even small per-way values produce significant total wins when symbols match across many ways. The game has 10 regular pay symbols: 4 high-pay gemstones and 6 low-pay card ranks. The Diamond is the only symbol that pays for 2-of-a-kind.

High-Pay Symbols (Gemstones)

Low-Pay Symbols (Card Ranks)

Note: Per-way values appear small, but at 117,649 max ways, winning combinations across multiple ways multiply the payouts significantly. A 6-of-a-kind Diamond at high-way-count spins with a 20x+ Free Spins multiplier is how the 26,000x cap becomes achievable.

How Do Free Spins Trigger and Pay?

Free Spins trigger when all 4 golden letter tiles — G, O, L, D — land anywhere on the reels (including the cart reel) on a single spin. Community estimates suggest the trigger frequency is approximately 1 in 150–200 spins, though BTG does not publish official figures.

The Unlimited Multiplier

During Free Spins, every Reaction (winning cascade) increases the multiplier by 1x, and it never resets during the entire round:

• 1st win: 1x multiplier
• After 1st Reaction: 2x multiplier
• After 2nd Reaction: 3x multiplier
• ...continues without limit

The multiplier carries across all spins within the round. If you reach 8x by the end of spin 3, spin 4 starts at 8x. By the end of 12 spins with consistent Reactions, multipliers of 15x–30x are achievable. In exceptional rounds with retriggers, 50x+ is possible.

This unlimited multiplier is what distinguishes Bonanza from games like Gonzo's Quest (capped at 15x). The uncapped nature means there is no mathematical ceiling on the multiplier itself — only the 26,000x total win cap limits the final payout.

Retrigger (Gold Bar Scatters)

During Free Spins, gold bar scatter symbols appear in the mine cart positions (the 4 positions above reels 2–5). These are different from the G-O-L-D letter scatters used to trigger the feature:

Retriggers can occur multiple times with no stated limit. Each retrigger extends the multiplier accumulation period, dramatically increasing potential. The combination of unlimited multiplier + retriggers is the path to the 26,000x max win.

The unlimited multiplier in Bonanza Megaways creates a fundamentally different Free Spins dynamic compared to capped systems. In Gonzo's Quest (capped at 15x), once you hit 15x, additional Reactions only add base wins — the multiplier ceiling has been reached. In Bonanza, every Reaction matters because the multiplier never stops growing. A 12-spin round with 30+ total Reactions reaches a 30x+ multiplier, which at 117,649 max ways with premium symbol matches creates extraordinary payouts up to the 26,000x cap.

— Galaxy of Slots Editorial Team

Are the Buy Feature and Ante Bet Worth Your Money?

Bonanza Megaways now offers a Feature Buy option, though this was not part of the original 2016 release — it was added in a later update.

The Feature Buy RTP (96.11%) is actually slightly higher than the base game (96.00%). This is unusual — in most slots, the Buy Feature RTP is equal to or lower than the base game. The 0.11% difference is small but mathematically real.

Important restrictions:

• The Feature Buy is not available in all jurisdictions (e.g., UK, some European markets, some Australian states)
• Some sources cite the cost as 90x rather than 100x — this may vary by operator
• There is no Ante Bet option (unlike Pragmatic Play slots)

For players in jurisdictions without the Buy Feature, Bonanza requires patience — the ~150–200 spin average wait for Free Spins cannot be bypassed. This is a significant difference from Pragmatic Play's lineup where Buy Features are standard: Gates of Olympus (100x), Sweet Bonanza (100x), Starlight Princess (100x).

What Does the Math Mean for Your Bankroll?

Bonanza Megaways' 4.00% house edge (96.00% RTP) is at the upper end of the competitive range. This is notably higher than most games in this collection — below Immortal Romance (96.86%), Dead or Alive 2 (96.82%), and the Pragmatic Play lineup (~96.50%).

However, the 37.47% hit frequency (~1 in 2.66 spins) is remarkably high for a High-volatility slot. This means you get frequent small returns from Reactions, which extends session duration compared to lower-hit-frequency slots.

Bankroll considerations:

• 37.47% hit frequency — roughly 1 in 2.66 spins produces some return (many small wins)
• Free Spins trigger approximately every 150–200 spins (community estimate)
• At $0.20/spin: average cost to first bonus = $30–$40
• The unlimited multiplier concentrates significant returns in Free Spins rounds
• The 26,000x max win requires exceptional multiplier accumulation + retriggers + premium symbol matches at high way counts

The high hit frequency combined with Reactions creates a more engaging base game experience than many High-volatility slots, even though the majority of returns still come from Free Spins. The unlimited multiplier means the variance within bonus rounds is extreme — a 12-spin round with few Reactions might return 10–20x, while a round with sustained Reactions and retriggers can approach the 26,000x cap.

Where Do the Wins Actually Come From?

BTG does not publish detailed probability distributions for Bonanza Megaways. The data below combines confirmed official statistics with community-tracked estimates.

• Hit frequency: 37.47% — approximately 1 in 2.66 spins (confirmed by multiple sources)
• Free Spins trigger: approximately 1 in 150–200 spins (community estimate; not officially published)
• 117,649 max ways probability: very rare — all 6 reels must independently show 7 symbols
• Max win: 26,000x — requires sustained Reactions building a high unlimited multiplier, combined with premium symbol matches at high way counts and retrigger extensions

The high hit frequency (37.47%) means the base game returns frequent small wins through Reactions, but the significant payouts come from the Free Spins unlimited multiplier. The variable ways mechanic adds another layer of variance: a 6-of-a-kind on a 64-way spin pays dramatically less than the same combination on a 117,649-way spin.

The best Free Spins rounds combine three factors: (1) consistent Reactions building the unlimited multiplier to high values, (2) retriggers extending the round duration, and (3) premium symbol wins (especially Diamond 6-of-a-kind) occurring at high way counts late in the round when the multiplier is elevated.

Bankroll Scenario Table

Expected loss assumes 96.00% RTP (4.00% house edge). "Cost to First Bonus" is the average expected wagering ($bet × 200 spins) — actual results vary enormously due to High volatility. See our slot glossary for term definitions.

Dragon Born Megaways was technically first (February 2016), but Bonanza Megaways (December 2016) was the game that made Megaways a household name in the slot industry. The distinction matters historically but not practically — Bonanza's combination of the mine cart reel, G-O-L-D scatter, and unlimited multiplier created a more compelling player experience that drove adoption. BTG's subsequent decision to license the Megaways patent to other developers created a multi-billion dollar market segment that now includes 200+ titles.

— Galaxy of Slots Editorial Team

How Does Bonanza Megaways Compare to the Competition?

Bonanza Megaways competes against its own sequel, other Megaways titles, and the broader tumble/cascade market:

Bonanza vs Extra Chilli Megaways

Extra Chilli Megaways (2018) is BTG's own sequel — same Megaways engine and unlimited multiplier, but with key upgrades: a Gamble Free Spins feature (gamble your spins for more), a higher RTP of up to 96.82% (vs 96.00%), and an extra horizontal reel. However, its max win is actually lower at 20,000x vs Bonanza's 26,000x. Extra Chilli offers more player agency through the gamble mechanic; Bonanza offers higher theoretical max win and historical significance.

Bonanza vs Gates of Olympus

Gates of Olympus uses scatter pays instead of paylines/ways, random multiplier orbs (2x–500x) instead of +1x incremental, and offers a standard Buy Feature (100x). Its 96.50% RTP is higher, but its 5,000x max win is much lower. Gates represents the Pragmatic Play approach: accessible, Buy Feature available, moderate max win. Bonanza represents the BTG approach: patience-rewarding, variable ways, extreme max win.

Historical Significance

Bonanza Megaways created a multi-billion dollar market segment. BTG's Megaways patent has been licensed to NetEnt, Pragmatic Play, Blueprint Gaming, Red Tiger, and a dozen other developers. Each licensee adds their own twist, but the core variable-reel engine remains BTG's invention. Understanding Bonanza is understanding the foundation of modern slot design.

Are Bonanza Megaways Predictor Apps Real?

Bonanza's status as the slot that popularized Megaways attracts persistent myths:

"Bonanza Megaways Predictor" / "Ways Hack"

These do not exist. The number of symbols per reel (2–7) is determined by an RNG on each spin. No app can predict how many ways will be active or which symbols will appear. The variable-ways mechanic is random and certified by independent testing labs.

"More Ways = Better Wins"

Partially true but misleading. More ways means more possible winning combinations, but per-way payouts remain constant. A 6-of-a-kind Diamond at 117,649 ways pays more total than the same at 64 ways, but the RTP is 96.00% across all way counts. The game does not become more "generous" at higher way counts — it simply distributes the same mathematical return differently.

"The G-O-L-D Scatter Is Rigged to Never Complete"

The G-O-L-D letters appear on all reels, not just the cart reel. Each letter's appearance is independently random. The trigger frequency (~1/150–200 spins) is normal for a High-volatility slot. The perception of rarity is amplified by confirmation bias: you remember the three letters that appeared without the fourth, but forget the many spins where no letters appeared at all.

"Bonanza Is Outdated"

The 96.00% RTP, 37.47% hit frequency, unlimited multiplier, and 26,000x max win remain competitive. "Newer" does not automatically mean "better" in a certified RNG system — the math is independent of release date. However, the 4.00% house edge is higher than many newer alternatives.

Common Myths Debunked

• "Higher bets create more Megaways per spin" — False. The number of symbols per reel (2–7) is determined independently of bet size. A $0.20 spin has the same probability of generating 117,649 ways as a $20 spin.
• "The unlimited multiplier means unlimited wins" — The multiplier itself has no ceiling, but the total win is capped at 26,000x. Once you reach 26,000x in a single round, the game caps the payout. The multiplier enables reaching the cap, not exceeding it.
• "Bonanza was the first Megaways slot" — Technically incorrect. Dragon Born Megaways (February 2016) was the first game to use the Megaways engine. Bonanza Megaways (December 2016) was the second, but it was the game that popularized the mechanic and turned it into an industry-wide phenomenon.
• "Reactions/cascades are programmed to stop at specific points" — Each new symbol that drops after a Reaction is independently random. Whether the chain continues depends entirely on whether the new configuration creates wins. There is no mechanism to artificially terminate or extend cascades.
• "You need max bet for the G-O-L-D scatter to appear" — Scatter probability is bet-independent. The G-O-L-D letters appear with the same frequency at all bet levels from $0.20 to $20.

Who Is Bonanza Megaways Actually For?

Bonanza Megaways is for players who want the original Megaways experience — variable ways, unlimited multiplier, and the game that built an entire genre.

Choose Bonanza Megaways if:

• You want to experience the slot that popularized the Megaways engine
• You enjoy variable-ways mechanics — the changing number of ways per spin adds unpredictability
• You appreciate the unlimited Free Spins multiplier (+1x per Reaction, no cap)
• You want a 26,000x max win with High volatility and 37.47% hit frequency
• You prefer a mining/gold rush theme with a horizontal mine cart reel

Consider alternatives if:

• Same engine, more features: Extra Chilli Megaways (20,000x, Gamble Free Spins, 96.20% RTP) — BTG's own evolved version
• Higher RTP with tumble: Gates of Olympus (96.50%, 5,000x) — scatter pays with multiplier orbs and Buy Feature
• Lower volatility cascades: Gonzo's Quest (2,500x, Medium-High) — the original cascade slot with predictable multiplier progression
• Cluster pays with tumble: Sugar Rush (5,000x, 96.50%) — 7x7 grid with position-based multipliers
• Extreme max win: Dead or Alive 2 (111,111x) — the highest ceiling in the collection

Other Big Time Gaming Games

Explore more guides from Big Time Gaming:

• Extra Chilli Megaways — 96.20% RTP, High volatility, 20,000x max win

Frequently Asked Questions About Bonanza Megaways