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20,000 SPINS 2 RUNS DEMO SERVER

Big Time Gaming · 2019 · measured RTP 100.2% · tested 2026-09-30

Bonanza

One spin after the balance sank 561 bets below the start, a Bonanza free spins round paid 1,626.45x; the measured RTP of all 20,000 rounds, two demo runs, was 100.2% against 96%.

In numbers: the lab's RTP test on the official demo server measured 100.2% against 96% declared over 20,000 logged rounds in 2 runs; 37.9% of rounds paid; a natural bonus landed once per 435 rounds (46 in total) and a bonus round paid a median 51.6x the stake, mean 105.7x, trigger spin included; the biggest round paid 1,626.5x; the longest dry run was 23 spins.

Same series: Bonanza Billion, Bonanza Falls, Bonanza Megapays, Bonanza Trillion — each tested separately

Bonanza demo

United Statesavailable at Cafe Casino
Play for real money
Bonanza demo game field
Exclusive bonus at Cafe Casino · for players from the United States 300% up to $2,000 + 150 FS
Get bonus
Free demo · no registration · plays on the provider's official server · 18+ Responsible gambling

Test card

20,000 spins · FUN 1.00 bet · every request logged
Spins20,000 · 2 runs
BetFUN 1.00
RTP declared96.00%
RTP measured100.17% (approximate 95% CI 82.3–118.1)
Hit frequency38% · every 2.64
Dead streak max / avg23 / 2.68
Median hit0.85x
Max win (no bonus round)202.4x · run 1, round 7994
Free spins, natural46 · 2.3 bHz · every 434.8 spins · mean bonus round payout 105.7x stake
Balance start → end5,000 → 5,034
Balance in bets, all runs in sequence
Win distribution, x bet, all runs
test logs · 2 runs · every request loggedtest record ↓
  1. 012026-09-2810,000 rounds · 0 buysfiles & checksums ↓109.31%RTP4 files · SHA-256 ↓
  2. 022026-09-3010,000 rounds · 0 buysfiles & checksums ↓91.03%RTP4 files · SHA-256 ↓

each run keeps its own spin log, CSV and raw server journal with checksums; the figures on this card combine all runs

Free spins on video

natural trigger · 46 in 20,000 spins
REC · NATURAL TRIGGER

Twelve free spins at FUN 1 with the multiplier climbing to x8, FUN 42.20 in total. Recorded in a separate browser session, outside the statistical samples.

Across all 2 runs the 46 natural bonuses split into 11 under 20x, 11 between 20x and 50x, 16 between 50x and 100x and 8 at 100x or more, and together they made up 24% of everything the game returned. The wait between two triggers ran from 11 to 1,759 spins. Payout figures here cover the whole bonus round in ordinary stakes, the trigger spin included: its scatter pays and line wins count towards the bonus.

Bonanza opens its feature with 12 free spins, and Scatters landing in the carts during the feature add 5 or 10 more. One feature per run went past 12 spins: round 6732 of run one collected 5 extra spins and finished 17 spins long with 185x the stake, and round 5066 of run two did the same for 64.15x.

  • triggers 46 1 per 435 spins
  • every 435 spins gaps 11 to 1,759
  • mean 105.7x bonus round median 51.6x stake
  • best 1,626.5x run 1 · round 2128
  • spins per bonus 12.2 12 to 17 observed
Trigger mapevery natural bonus of all runs in sequence · height = result, log scale · green = top 4
Best bonuses
  1. 01run 1 · round 212812 spins1,626.5x
  2. 02run 1 · round 637212 spins358.7x
  3. 03run 2 · round 211312 spins314.5x
  4. 04run 2 · round 305812 spins264.8x

Risk profile

how much bankroll the 2 runs in sequence needed
1,432xmax drawdown, in bets (run 2, by spin 9102)
-561xlowest point vs start
23longest dead streak, spins
Bankroll survival across the runs in sequence
50 betsbust at spin 270
100 betsbust at spin 335
200 betsbust at spin 715

The runs are played back to back as one series, one bet size. A different session can bust earlier or never; treat this as a measured example, not a rule.

How it plays

6 rules screens from the game
RULES · FROM THE GAME
Bonanza rules, page 1
Bonanza rules, page 2
Bonanza rules, page 3
Bonanza rules, page 4
Bonanza rules, page 5
Bonanza rules, page 6
screen 01 / 06 Bonanza rules, page 1

Bonanza is a Megaways slot on six reels, each showing up to seven symbols; on reels 2 to 5 one of them sits in a row of mine carts above the reel, and together they allow up to 117,649 ways. Wins pay left to right on adjacent reels, starting with the first reel, and at FUN 1 six purple gems pay 50 while six 9s pay 0.80.

Every winning symbol takes part in a reaction: it is removed, and new symbols drop in from above on the reels and slide in from the right in the carts. The dynamite Wild arrives only in the carts and replaces every symbol except the Scatter, and the reactions keep going as long as new wins form.

The GOLD letters are the Scatters: four of them award 12 free spins, and every Scatter beyond four is worth five spins apiece. Inside the feature the win multiplier opens at x1 and climbs one step after each reaction, without a cap, while Scatters that arrive in the carts add 5 spins for three and 10 for four.

On this demo server the game declares 96.00% RTP and accepts stakes between FUN 0.20 and FUN 100; with no bonus purchase, every feature in both samples came from ordinary spins.

Mechanics7 from the rules screens
  • Megaways
  • Cascading reels
  • Wild symbol
  • Scatter symbol
  • Free spins
  • Multiplier
  • Retrigger
Paytable
x total bet · bar = top payout on a log scale
symbol 23456
Purple gem 2x 5x 10x 25x 50x
Red gem — 1x 2x 2.5x 7.5x
Blue gem — 0.25x 1x 1.5x 2x
Green gem — 0.25x 0.5x 0.75x 2x
A — 0.2x 0.4x 0.6x 1.75x
K — 0.2x 0.4x 0.6x 1.75x
Q — 0.2x 0.25x 0.6x 1x
J — 0.15x 0.25x 0.5x 1x
10 — 0.15x 0.25x 0.5x 0.9x
9 — 0.1x 0.2x 0.4x 0.8x

Bet range FUN 0.20 – 100 per spin · payouts read from the game's paytable at bet FUN 1.00

Verdict

Twenty-six features, none past 315x

One round holds up Bonanza's two demo runs at FUN 1: 2128 of run one paid 1,626.45x from a free spin at x15, and with it the series stands at 100.17% across 20,000 spins, 34 bets ahead, after 109.31% and 91.03%. Run two produced 26 features to run one's 20 but none beyond 314.45x, on round 2113, so the feature money fell from 27.8% of the return to 20.0%; across both runs the 46 features paid 105.69x the stake on average and 51.58x at the median, trigger spins included, 8 of them over 100x and 11 under 20x, the least 3x on round 7473 of run two.

The multiplier ladder decides what a feature is worth: the 57 free spins that began at x10 or higher took 43.4% of all free spins money across the two runs, spins from x5 upward 83.1%, and the 96 spins at x1 4.2%. Run one's ladder finished at x8.95 on average with one climb to x19, run two's at x8.65 with two stops at x15, on rounds 3058 and 5222, and the difference between 57.7% and 18.7% earned by x10-plus spins in the two runs is the whole gap between the 150.51x and 67.14x their free spins paid per feature. One feature per run ran past 12 spins, round 6732 to 17 spins for 185x and round 5066 to 17 for 64.15x.

Little changed in the base game: 38.74% and then 37.09% of spins paid, single-win rounds made 47.2% and 47.0% of base-game money, chains of two or three wins 41.8% and 42.1%, and the best base rounds were 202.35x on round 7994 and 151.1x on round 3857. Features arrived once per 434.8 spins over both runs, 2.3 bHz, with waits of 1,758 spins after round 7576 in run one and 1,280 after round 7858 in run two. Run one bottomed 561 bets down on spin 2127 and closed 930.9 up; run two's balance dipped below its start for good after spin 622, bottomed 1,035.3 down on spin 9102 and closed 896.6 down, and no test bankroll survived either run, 200 bets lasting 715 spins the first time and 1,310 the second.

Measured upsides
  • Twenty-six features in run two, one per 384.6 spins, against 20 in run one
  • Eight of 46 features passed 100x, with 1,626.45x on round 2128 of run one at the top
  • Free spins that opened at x10 or higher earned 43.4% of all free spins money across both runs
  • Hits on 37% to 39% of spins in each run, with blank stretches capped at 23
Measured downsides
  • A 91.03% second run, its 26 features averaging 70.13x against 151.93x in the first
  • Eleven features of the 46 finished under 20x, the least 3x on round 7473 of run two
  • Waits between features reached 1,758 spins in run one and 1,280 in run two
  • Nothing in run two passed 314.45x, less than a fifth of run one's 1,626.45x record
Verdict by run · 2 runs · tap a run to read it
Run 01·2026-09-28·109.31% Round 2128 alone paid 1,626.45x and turned a series that stood 561 bets down into one that finished at 109.31% of FUN 10,000 staked, far above the declared 96.00%.

Round 2128 alone paid 1,626.45x and turned a series that stood 561 bets down into one that finished at 109.31% of FUN 10,000 staked, far above the declared 96.00%.

Across 20 natural features and 245 free spins, the 22 spins that began at x10 or higher collected 57.7% of the free spins money, spins from x5 upward 89.2%, and the 40 spins played at x1 only 2.0%. In the record feature the 11th spin started at x15 and paid 1,474.80 FUN, 90.7% of that bonus.

Ordinary spins in between are steadier: 38.74% of spins paid, one in 2.58, and the longest dry run lasted 22 spins. Single reactions made 47.2% of base-game money and chains of two or three wins another 41.8%, while the best base hit reached 202.35x at round 7994. Features were the rare part, 20 of them at one per 500 spins with a median of 47.98x, and the longest wait, from round 7576 to 9335, lasted 1,758 spins.

Run 02·2026-09-30·91.03% The feature count rose to 26 from run one's 20, one per 384.6 spins or 2.6 bHz, yet the features paid FUN 1,823.45 between them, trigger spins included, 20.0% of the return, where run one's twenty had paid 27.8%: the win multiplier finished at x8.65 on average and touched x15 twice, rounds 3058 and 5222 being the two, while the 35 spins played at x10 or higher earned 18.7% of the free spins money against 57.7% the first time round.

The feature count rose to 26 from run one's 20, one per 384.6 spins or 2.6 bHz, yet the features paid FUN 1,823.45 between them, trigger spins included, 20.0% of the return, where run one's twenty had paid 27.8%: the win multiplier finished at x8.65 on average and touched x15 twice, rounds 3058 and 5222 being the two, while the 35 spins played at x10 or higher earned 18.7% of the free spins money against 57.7% the first time round. Round 2113 set the run's record at 314.45x with a seventh spin at x6 worth FUN 213, 67.7% of the round; round 3058 took 264.75x more evenly, five of its last six spins paying between FUN 30.80 and FUN 83.30 as the multiplier climbed from x8 to x15; round 5222 opened with a FUN 65.35 first spin and closed at 128.65x, and round 9591, at 94.05x, was the only other feature past 90x. Six stayed under 20x, round 7473 paid 3x, its free spins 2.4x from the third spin alone with nine blank spins at x3 behind it, and round 5066 stretched to 17 spins, the run's one retrigger, for 64.15x.

Wins showed on 37.09% of spins and the median one was 0.8x; 6,291 spins returned nothing, the longest blank stretch ran 23 spins from round 5423, and rounds with one win accounted for 47.0% of what the base game paid, two or three wins in a chain for 42.1%, the 86 rounds with four or five for 9.7%, with round 9339 stringing ten wins together for FUN 7.95. Two base rounds passed 100x, 151.1x on round 3857 after four reactions and 116.2x on round 8638 after five, and 46 rounds in all reached 20x.

Only 453 spins saw the balance above its start, the last of them spin 622, and the peak was 74.9 bets up on spin 335; from there it slid to 1,035.3 bets down on spin 9102, the deepest point of either run, and closed at FUN 4,103.45, 896.6 bets short, 91.03% of the FUN 10,000 staked at FUN 1. The 2,000-spin blocks returned 80.3%, 109.0%, 92.3%, 78.3% and 95.3%; a 50-bet bankroll was gone by spin 745, a 100-bet by 833 and a 200-bet by 1310, the first feature did not come until round 170, and the longest wait ran 1,280 spins after round 7858.

Test record

2 runs · 20,000 rounds · 0 buys · open data · closed rig

This game has been through 2 separate test runs on the official demo server, each a fresh session of 10,000 rounds at a fixed bet. Every figure on this page combines the runs into one sample, as if they were one long session; the record below keeps each run apart, with its own numbers and its own downloadable log.

combined result · all runs2026-09-28 → 2026-09-30
Measured return 100.17% 95% band 82.3–118.1% · declared 96.00%
  • 20,000rounds, all runs
  • 38%rounds that paid
  • 1,626xbiggest round
  • 1 / 435natural bonus rate
  • 23longest dry streak
return by run, and combineddeclared 96.00%
Run 1 · 2026-09-2810,000 rounds
109.31%95% band 75.4–143.2%
Run 2 · 2026-09-3010,000 rounds
91.03%95% band 79.5–102.6%
All runs20,000 rounds combined
100.17%95% band 82.3–118.1%
70%90%110%130%150%declared 96.00%
dot = return of the run · whisker = approximate 95% band for that sample's mean · more rounds usually narrow a band, one very large round can widen it
how the return settled, round by round20,000 rounds
100.17% after 20,000 roundsdeclared 96.00%run 2 starts at round 10,001
line = return measured up to that round, all runs in sequence · dashed vertical = a new run starts · the line swings early and calms as rounds pile up
Each run on its own · tap a run to open it
01run Run 012026-09-28 10,000 rounds at FUN 1.00 · 0 buys · rig 0.8.2 · RTP profile 96.00% measured return109.31%+13.3 pts vs declared 95% band75.4–143.2% natural bonuses20 · 1 / 500 biggest round1,626x
95% band
75.4–143.2%
rounds that paid
39%
biggest round
1,626x · round 2,128
longest dry streak
22
natural bonuses
20 · one per 500 rounds
balance start → end
5,000 → 5,931
deepest drawdown
593x
Download this run · the square button copies the file’s SHA-256, so you can confirm the download is unchanged
02run Run 022026-09-30 lab note 10,000 rounds at FUN 1.00 · 0 buys · rig 0.8.7 · RTP profile 96.00% measured return91.03%-5.0 pts vs declared 95% band79.5–102.6% natural bonuses26 · 1 / 385 biggest round314x
95% band
79.5–102.6%
rounds that paid
37%
biggest round
314x · round 2,113
longest dry streak
23
natural bonuses
26 · one per 385 rounds
balance start → end
5,000 → 4,103
deepest drawdown
1,110x
lab note · 2026-09-30

On 30 September Bonanza came back at 91.03% after 109.31% on 28 September, 100.17% pooled across 20,000 spins of FUN 1, the declared figure being 96.00%. Features came 26 times against 20 and averaged 70.13x against 151.93x: nothing approached run one's 1,626.45x, the record here being 314.45x on round 2113, and the balance closed 896.6 bets down after a 1,035.3-bet low on spin 9102.

Download this run · the square button copies the file’s SHA-256, so you can confirm the download is unchanged

2 test runs combined into one sample (2026-09-28, 2026-09-30): 20000 ordinary paid rounds, including naturally triggered features, at a fixed FUN 1.0 bet on the Big Time Gaming demo served by the Relax Gaming platform (jurisdiction MT, RTP profile 96.0%); every request and response logged.

The test rig plays the official demo build over the network and records every server round: bet, win, intermediate steps (cascades, respins), free spins, collect. Screenshots and video were captured in a separate browser session and are not part of the statistical samples. The text was read against the log by an editor before publication. How we test → One test, step by step →

CLOSED RIG OPEN DATA

FAQ

7 questions · answered from the log
What took Bonanza from 109.31% to 91.03%?
Lab answer

One round. Run one's 2128 paid 1,626.45x, 14.9% of everything that run returned; run two's largest feature, round 2113, paid 314.45x. With 26 features against 20 the second run was busier, but its features averaged 70.13x against 151.93x, and the series settled at 100.17% over 20,000 spins.

Bonanza free spins: how frequent were they across both runs?
Lab answer

Forty-six over 20,000 spins, one in every 434.8 or 2.3 bHz: 20 in run one and 26 in run two. The shortest gap was 11 spins, rounds 4883 and 4894 of run one; the longest 1,758 spins after round 7576 in run one and 1,280 after round 7858 in run two, and run two's first feature only arrived on round 170.

Did the multiplier climb as high in run two?
Lab answer

No, it stayed lower: the final multiplier averaged x8.65 against x8.95, and the top was x15, reached on rounds 3058 and 5222, against x19 on round 2128; ten of run two's 26 features finished at x10 or above. Spins played at x10 or more paid 18.7% of run two's free spins money against 57.7% in run one.

Was round 2113 one big spin or a steady climb?
Lab answer

One spin, the seventh at x6: it paid FUN 213 of the round's FUN 314.45, 67.7%, and the eleventh at x10 added FUN 69.75. Round 3058 built its 264.75x more evenly, with five of its last six spins paying between FUN 30.80 and FUN 83.30 as the ladder climbed from x8 to x15.

Is a retrigger common in Bonanza?
Lab answer

No: two features in 46 ran past the opening 12 spins, one per run. Round 6732 of run one collected 5 extra spins and paid 185x over 17; round 5066 of run two also reached 17 spins and paid 64.15x, its tenth and eleventh spins bringing FUN 18.95 and FUN 27.60 at x3 and x5.

Where did run two bottom out?
Lab answer

It peaked 74.9 bets up on spin 335, showed a profit for the last time on spin 622 and fell to 1,035.3 bets down on spin 9102 before closing at FUN 4,103.45, 896.6 bets short. A 50-bet bankroll ran out on spin 745, 100 bets on spin 833 and 200 bets on spin 1310; in run one the same bankrolls lasted 270, 335 and 715 spins.

Do base-game cascades matter in Bonanza?
Lab answer

Yes, for just over half of the base-game money: rounds with a single win made 47.2% and 47.0% of it in the two runs, two- and three-win chains added 41.8% and 42.1%, four- and five-win chains 9.5% and 9.7%, and the longest chain in run two was ten wins on round 9339, worth FUN 7.95. Outside the features only four rounds passed 100x in 20,000 spins: 202.35x, 151.4x, 151.1x and 116.2x.

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Slotester Labmeasured run · every request logged measured
  • spins20,000
  • bet1.00
  • result+34x
  • RTP measured100.2%
  • bonuses46
  • max win, no bonus202.4x

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