Mining Megaways With Big Time Gaming’s Original

Key takeaways

How Bonanza slot Works

Megaways setup

The game uses six reels, and each reel can show two to seven symbols. Four mine carts sit above reels two, three, four and five, and each cart can add one extra symbol below it. That setup can reach up to 117,649 Megaways.

You’ll see the grid change on nearly every spin. Practically speaking, that makes the game feel less rigid than a fixed-line slot machine. I like that the carts show their extra symbols clearly, because you can track the changing shape without squinting. According to Big Time Gaming’s game rules, those cart symbols are part of the ways calculation rather than a decorative overlay, which is why the middle reels matter so much.

Snapshot: Bonanza uses up to 117,649 Megaways, so its win mechanic is variable ways rather than a fixed payline count.

Left-to-right wins

Wins start from the leftmost reel and need matching symbols on adjacent reels. Symbol height doesn’t matter, and that point trips up new Megaways players more than anything else. If the matching chain breaks before the next reel, the pay stops there.

Every pay works as a multiple of your stake. At $0.60, that makes the math easy enough during normal play, even when several small reactions stack together. The layout stays readable on desktop and mobile because symbols are large and the carts sit above the grid.

What matters here is the changing grid, not one lucky symbol position. You’re reading reel height, cart symbols and connected matches together.

Theme & First Impressions

Mine-cart setting

The reels sit in a stone quarry with a wooden shack, a water wheel and a banjo soundtrack. Above the reels, a cart track carries gems, Wilds and diamond symbols into view. Those carts aren’t just scenery, since they add extra symbols to the middle reels.

If you like rougher frontier-style themes, Outlaw gives a darker western comparison. This game feels lighter and more playful, with more focus on moving parts than gritty atmosphere. I prefer that choice here because the mechanic needs clear visual space.

Background: Old gold-mine settings often use carts, wooden sheds and water wheels because they instantly signal a working quarry.

First visual read

Symbols and Payouts

Gem pays

The premium set includes purple diamonds, red rubies, blue sapphires and green emeralds. Six purple diamonds pay 50x, six red rubies pay 7.5x, and six blue or green gems pay 2x. At my $0.60 stake, six diamonds pay $30.00.

That top gem matters because base-game reactions need premium symbols to become memorable. Six aces pay only $1.05 at the same stake, so low symbols rarely change a session alone. Pop is a useful comparison if you value fast symbol recognition, because both games keep their visual language simple.

Wilds and Scatters

The lower symbols are A, K, Q, J, 10 and 9. Six A or K symbols pay 1.75x, Q or J pays 1x, 10 pays 0.9x, and 9 pays 0.8x. In my test, most base-game wins came from these smaller combinations.

The Wild is a bundle of dynamite and substitutes for every symbol except the Scatter. The Scatter is a gold bar tile carrying one letter of GOLD. I like that split because you can spot feature progress fast, even during reactions.

Pointer: At a $0.60 stake, six diamonds pay $30.00, but low-card reactions usually chip back small amounts rather than changing the session alone.

Premium symbols matter, but reactions decide whether a spin grows. You need the board to keep replacing wins with more connected matches.

Megaways and the Carts

Changing reel heights

Cart symbols

Win Reactions

Cascading wins

Chain potential

Bonanza slot Free Spins

Trigger rules

Four Gold Scatters award 12 Free Spins. Every extra Scatter on the triggering spin adds five more spins. The round keeps the stake that triggered it, so my feature ran at $0.60.

No bonus buy appeared in the tested build. That means you can’t force the feature, and you need normal spins to carry you until the Scatters land. I like organic bonus hunts, but the wait can test your patience.

Heads Up: There was no bonus buy in the tested build, so you can’t force this round; your bankroll has to survive normal spins until the Scatters land.

Unlimited multiplier

During Free Spins, the win multiplier starts at x1 and rises by one after every reaction. It doesn’t reset between spins, which gives late-spin chains much more value. Scatters can also appear in the carts during the round.

Three cart Scatters add five spins, while four add 10 spins. This multiplier path drives the 29,000x maximum win, not the base game alone. Four Gold Scatters landed for me on spin 86 and triggered 12 Free Spins.

That round paid $23.46 from a $0.60 stake, about 39x. By the sixth spin, the multiplier had reached x8, and the feature had already changed the whole session. Free Spins are the clear main event because the multiplier turns ordinary reactions into meaningful wins.

How the 100-Spin Test Played

Session conditions

What changed it

RTP, Volatility & Test Data

Simulator projection

I modelled 1,000 spins at my $0.60 stake from the 96% RTP, 29,000x top win and medium volatility band. The median session ended $27.90 down. The middle 90% of runs sat between $130.90 down and $98.60 up.

Around 25% of spins paid something. A feature-sized win appeared about once in 50 spins in the model. You should read that as a range, not a prediction for your next session.

Our 100-spin session

My 100-spin session finished $1.05 up. One organic Free Spins round paid $23.46, while the base game never produced a win above $1.20. That lines up with the simulator’s broad message: small pays can appear often enough, but one feature can still decide the session.

Heads Up: Medium volatility still produced a $17.13 dip before the only feature landed, so don’t read “medium” as low-risk.

The 96% RTP is the operator-published theoretical return. A single 100-spin session doesn’t prove or change that return, and simulator numbers simply illustrate outcomes based on RTP, volatility band and max-win cap. Feature behavior should count as session evidence, not a guarantee.

The numbers make the game look fair for Megaways fans. You still need patience, because medium volatility can hide meaningful dips inside normal play.

Bankroll Fit and Player Type

Who may like it

Bankroll notes

Where I Land

Bonanza stands out because its original Megaways setup still feels clean, readable and focused. The drawback is clear: base-game wins can feel small until Free Spins finally arrive.

My Take

Patient Megaways players should get the most value here, especially if you like organic feature hunts. Expect small base-game reactions, then a big session swing if Free Spins connects. Don’t play it like a quick-hit slot.

I like the carts, the simple symbol set and the way the multiplier makes reactions matter. I don’t like how much the 100-spin test depended on one feature, because the base game never topped $1.20. Still, the $23.46 bonus showed why the format remains popular.

The Bonanza slot works best when you size your stake for a long feature hunt and accept quiet stretches. Testing notes and screenshots are updated periodically when game rules or SatoshiHero builds change.

Pros:

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  Clean Megaways setup: Variable reels and carts stay easy to read during play.
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  Strong Free Spins hook: The unlimited multiplier gives reaction chains real upside.
• 
  Fair headline math: 96% RTP sits solidly for a Megaways slot.
• 
  Clear symbols: Gems, cards, Wilds and Scatters don’t create visual confusion.

Cons:

• 
  No bonus buy: You must wait for four Gold Scatters naturally.
• 
  Small base wins: My base game never beat $1.20 in 100 spins.
• 
  Feature reliance: One Free Spins round decided the whole session result.

Best For: Megaways fans, Free Spins hunters and steady bankroll managers get the clearest value here. The theme helps if you like classic mine settings, while medium volatility keeps the ride less brutal than many extreme bonus-hunt slots. If you need constant big base-game hits, pick something busier.