Bonanza Megaways Slot Review
Bonanza Megaways is a high volatility mining-themed slot by Big Time Gaming with an RTP of 96.00%. It pioneered the Megaways mechanic with up to 117,649 ways to win, featuring cascading Reactions and an unlimited multiplier during free spins for wins up to 10,000x.
What is Bonanza Megaways?
Bonanza Megaways, released by Big Time Gaming in 2016, is the slot that launched the Megaways revolution and fundamentally changed the online slots landscape. Set in a gold mine with minecart tracks running above the reels, the game uses the now-iconic Megaways engine where each reel can display between 2 and 7 symbols per spin, creating a dynamic number of win ways that peaks at 117,649. An additional horizontal reel above reels 2 through 5 adds four extra symbol positions per spin. The Reactions mechanic removes winning symbols after each payout, dropping new symbols into their positions for potential chain wins from a single stake. The real mathematical weight sits in the free spins bonus. Landing four scatter symbols spelling G-O-L-D triggers 12 free spins with an unlimited win multiplier that starts at 1x and increases by 1 for every Reaction during the entire bonus round. Extended chain reactions push this multiplier into double or even triple digits, fundamentally transforming the value of later wins. Bonanza established Big Time Gaming as a major force in slot design, and the Megaways engine has since been licensed to numerous other providers who have built hundreds of titles on the same variable-reel foundation.
RTP, Volatility & Max Win
Bonanza Megaways sits at exactly 96.00% RTP — right at the industry average and standard for a high-volatility Megaways title. The variable reel height system creates an unusual dynamic: spins with fewer visible symbols (closer to the minimum of 64 ways) have fundamentally different payout profiles than spins with maximum symbol coverage (117,649 ways). This means variance operates on two levels — the normal win/loss variance of any slot, plus the structural variance of how many win ways are available on each spin. The Reactions mechanic provides base game cascade potential, but meaningful returns depend on the free spins bonus and its unlimited multiplier. The 10,000x maximum win cap requires a combination of long Reaction chains and a heavily elevated multiplier during the bonus round. The $20 maximum bet is relatively low compared to many high-volatility slots, which limits absolute win potential in currency terms but keeps session costs manageable. Base game hit frequency of approximately 18% is moderate, with the variable reel heights meaning some spins offer genuinely more potential than others.
How Bonanza Megaways Works
The base game uses 6 main reels, each displaying between 2 and 7 symbols per spin. This variable height creates a dynamic win way count that changes every spin: the minimum is 64 ways (all reels showing 2 symbols) and the maximum is 117,649 (all showing 7). An additional horizontal reel sits above reels 2-5, adding four extra symbol positions that participate in win combinations. The paytable features gem symbols as premium payers (purple, red, green, blue) and card suit symbols as lower values. The Reactions mechanic activates after every win: winning symbols are removed from the grid, remaining symbols drop down, new symbols fill from above, and the game checks for new wins. This cascade continues until no new wins form. During the base game, Reactions provide bonus entertainment and occasional multi-cascade payouts, but without a multiplier they primarily serve as a preview of the free spins potential.
Bonus Round & Free Spins
Four scatter symbols spelling G-O-L-D across the horizontal reel and main reels trigger 12 free spins. The critical mechanic is the unlimited win multiplier. Starting at 1x, the multiplier increases by 1 for every Reaction (cascade) that occurs during the entire free spins round. This means the multiplier never resets between spins — it carries over from spin to spin, climbing progressively higher. By the end of a productive free spins round, the multiplier can reach 15x, 20x, or even higher. Late-bonus wins amplified by these elevated multipliers produce the game's biggest payouts. Additional G-O-L-D scatter hits during the bonus award 5 extra free spins each, extending the multiplier's growth potential. The interaction between Reaction chain length and multiplier growth defines the entire mathematical profile of the bonus: short chains produce modest returns, while sustained cascading sequences can push the multiplier into ranges that transform ordinary wins into substantial payouts.
Special Features
The Megaways engine itself is the primary special feature — the variable reel height system was revolutionary when Bonanza launched and has since been licensed to dozens of other providers. Each spin's potential is partially visible: more symbols on screen means more possible winning combinations, creating a visual indicator of opportunity that traditional fixed-reel slots lack. The horizontal extra reel adds a strategic dimension to the grid by providing four additional positions that participate in all win calculations. Big Time Gaming designed Bonanza without a bonus buy feature in the original version, requiring organic scatter collection. Some later implementations by partner casinos may offer bonus buy variants, but the original game does not include this option. The absence of bonus buy preserves the original game's tension around G-O-L-D scatter collection.
Pros and Cons
Pros
- Pioneered the Megaways engine — the original and still one of the best implementations
- Unlimited multiplier during free spins creates genuine open-ended win potential
- 10,000x maximum win provides a strong ceiling for a 2016 release
- Reactions mechanic delivers cascading entertainment value from every win
- 96.00% RTP is fair for the high-volatility category
Cons
- Variable reel heights mean some spins have significantly less potential than others
- $20 max bet limits absolute win potential in currency terms
- Free spins trigger requires collecting 4 specific scatter symbols (G-O-L-D)
Common Misconceptions
What Players Say About Bonanza Megaways
Bonanza Megaways holds a revered position in slot communities as the game that launched an entire mechanic category. Players frequently cite it as the slot that changed online gambling, with the Megaways engine now licensed to dozens of providers. Community discussions praise the unlimited win multiplier during free spins and the mining cart scatter collection as a satisfying trigger mechanic. Forum veterans describe sessions as feast-or-famine: the 10,000x cap feels generous, but base game stretches can be punishing. The 96.00% RTP draws occasional criticism for sitting right at average, though most players accept this as fair for the variance profile. Bonanza remains a fixture in 'best slots of all time' lists across AskGamblers, BigWinBoard, and CasinoGrounds, and streamer highlight reels from Bonanza sessions still generate significant engagement years after release.
Session Notes
Our Bonanza Megaways testing sessions underscored the high-volatility design. The variable reel heights created a visible difference between spins — low-symbol spins with 300-400 ways felt restrictive while max-height spins with thousands of ways generated noticeably more activity. Base game Reaction chains occasionally produced decent returns when premium gem symbols cascaded into new wins, but long stretches of 50-80 spins with minimal returns were the norm. Free spins triggered approximately once every 200 to 250 spins, requiring patience for the G-O-L-D scatter collection. The unlimited multiplier during the bonus proved essential: early bonus rounds where the multiplier stayed below 10x returned modest amounts, while our best round reached a multiplier of 27x through extended chain Reactions, delivering a 680x payout from a combination of mid-range gem wins amplified by the accumulated multiplier. Sessions without triggering the bonus felt lean, reinforcing that Bonanza's mathematical weight is concentrated in the free spins feature.
Expert Assessment
Bonanza Megaways deserves its pioneer status — the Megaways engine fundamentally expanded what slot design could achieve. The unlimited multiplier and cascading mechanic create genuine excitement during free spins. The 96.00% RTP is average but acceptable, and the 10,000x cap provides meaningful upside. Big Time Gaming's design remains the benchmark against which all Megaways successors are measured.
Is Bonanza Megaways Worth Playing?
Bonanza Megaways holds a unique position in slot history as the game that introduced the Megaways engine to the world. Beyond its historical significance, it remains a strong slot on its own merits. The unlimited multiplier during free spins is a genuinely exciting mechanic that creates escalating tension with every cascade, and the 10,000x cap provides meaningful ceiling potential. The 96.00% RTP is fair, and the Reactions system keeps both base game and bonus play engaging. The variable reel heights add a visual and mathematical dimension that traditional fixed-reel slots cannot replicate. The $20 max bet and occasional frustration of the four-scatter bonus trigger are the main drawbacks. Newer Megaways titles from various providers may offer higher maximum wins or bonus buy options, but Bonanza's combination of clean design, proven math model, and the unlimited multiplier mechanic continues to make it one of the most satisfying high-volatility experiences available.
How Bonanza Megaways Compares
| Slot | Provider | RTP | Volatility | Max Win | Why Compare |
|---|---|---|---|---|---|
| Bonanza Megaways | Big Time Gaming | 96% | High | 10,000x | This slot |
| Dead or Alive 2 | NetEnt | 96.82% | High | 111,111x | Different mechanic (sticky wilds vs cascades) but comparable extreme volatility and massive win potential |
| Gates of Olympus | Pragmatic Play | 96.5% | High | 5,000x | Similar high-volatility cascade mechanic with multiplier growth, but uses scatter pays instead of Megaways win ways |
| Sweet Bonanza | Pragmatic Play | 96.48% | High | 21,175x | Pragmatic Play's scatter-pays cascade slot — similar cascade-to-multiplier gameplay loop |
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Frequently Asked Questions
What is the RTP of Bonanza Megaways?
Bonanza Megaways has a theoretical RTP of 96.00%, which is right at the industry average. This is standard for a high-volatility Megaways title.
How does the Megaways mechanic work in Bonanza?
Each of the six main reels can display between 2 and 7 symbols per spin, creating a variable number of win ways from 64 to 117,649. An additional horizontal reel above reels 2-5 adds four extra positions. More visible symbols means more potential winning combinations on that spin.
What is the maximum win on Bonanza Megaways?
The maximum win is 10,000x your total bet. The biggest payouts come during free spins when the unlimited multiplier builds through consecutive Reactions to amplify wins substantially.
How does the unlimited multiplier work in free spins?
During free spins, the multiplier starts at 1x and increases by 1 for every Reaction (cascade win) across the entire bonus round. It never resets between spins. By the end of a productive bonus, the multiplier can reach 20x or higher, dramatically increasing the value of later wins.
Who invented the Megaways engine?
The Megaways engine was created by Big Time Gaming, with Bonanza (2016) being the first slot to use it. BTG has since licensed the mechanic to numerous other providers including Pragmatic Play, Blueprint Gaming, and Red Tiger, resulting in hundreds of Megaways titles across the industry.
Can you buy the bonus in Bonanza Megaways?
The original Bonanza Megaways by Big Time Gaming does not include a bonus buy feature. Free spins must be triggered by collecting the four G-O-L-D scatter symbols. Some casino-specific implementations may vary, but the base game does not offer a direct bonus purchase option.