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20,000 SPINS 2 RUNS DEMO SERVER

Pragmatic Play · 2021 · tested 2026-09-30

Big Bass Bonanza Megaways

Fish labels survive winning tumbles in Big Bass Bonanza Megaways free spins, and in the first demo run one fisherman collected USD 200 from a three-fish screen on round 1376.

In numbers: measured RTP 106.5% against 96.72% declared over 20,000 logged rounds in 2 runs; 15.4% of rounds paid; a natural bonus landed once per 105 rounds (190 in total) and a bonus round paid a median 50.6x the stake, mean 81.7x, trigger spin included; the biggest round paid 606.2x; the longest dry run was 54 spins.

Test card

20,000 spins · USD 2.00 bet · every request logged
Spins20,000 · 2 runs
BetUSD 2.00
RTP declared96.72%
RTP measured106.53% (approximate 95% CI 89.4–123.7)
Hit frequency15% · every 6.48
Dead streak max / avg54 / 6.45
Median hit0.90x
Max win (no bonus round)87.0x · run 2, round 7236
Free spins, natural190 · 9.5 bHz · every 105.3 spins · mean bonus round payout 81.7x stake
Balance start → end100,000 → 102,613
Balance in bets, all runs in sequence
Win distribution, x bet, all runs
test logs · 2 runs · every request loggedtest record ↓
  1. 012026-09-1110,000 rounds · 0 buysfiles & checksums ↓90.22%RTP4 files · SHA-256 ↓
  2. 022026-09-3010,000 rounds · 0 buysfiles & checksums ↓122.85%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

Play Big Bass Bonanza Megaways demo

PRAGMATIC PLAY · official demo · same math as real play
Best offer for players from United States Big Bass Bonanza Megaways available at Cafe Casino
Play for real money
Big Bass Bonanza Megaways: opening board at a USD 2 bet, with a USD 100 bass on the fifth reel
Exclusive bonus at Cafe Casino · for players from the United States 300% up to $2,000 + 150 FS
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Free demo · no registration · plays on the provider's official server · 18+ Responsible gambling

Free spins on video

natural trigger · 190 in 20,000 spins
REC · NATURAL TRIGGER

Recorded on media spin 170 in a separate demo session at USD 2. The result screen shows USD 116.80: USD 115.20 came from ten free spins and USD 1.60 from the triggering ordinary spin. Three fishermen arrived, so this feature ended before earning an extension. The statistical bonus results below exclude the triggering ordinary-game payments. Recorded in a separate browser session, outside the statistical samples.

Across all 2 runs the 190 natural bonuses split into 22 under 20x, 71 between 20x and 50x, 52 between 50x and 100x and 45 at 100x or more, and together they made up 73% of everything the game returned. The wait between two triggers ran from 1 to 611 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.

Every fourth fisherman queues ten additional spins at the next multiplier stage. Twenty-three of 88 natural features earned an extension; this version has no purchase sample.

  • triggers 190 1 per 105 spins
  • every 105 spins gaps 1 to 611
  • mean 81.7x bonus round median 50.6x stake
  • best 606.2x run 2 · round 8609
  • spins per bonus 14.6 10 to 40 observed
Trigger mapevery natural bonus of all runs in sequence · height = result, log scale · amber = top 4
Best bonuses
  1. 01run 2 · round 860940 spins606.2x
  2. 02run 2 · round 179240 spins605.4x
  3. 03run 2 · round 188840 spins512.1x
  4. 04run 1 · round 525135 spins416.9x

Risk profile

how much bankroll the 2 runs in sequence needed
1,463xmax drawdown, in bets (run 1, by spin 8651)
-1,152xlowest point vs start
54longest dead streak, spins
Bankroll survival across the runs in sequence
50 betsbust at spin 65
100 betsbust at spin 3049
200 betsbust at spin 3185

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

7 rules screens from the game
RULES · FROM THE GAME
Big Bass Bonanza Megaways rules, page 1
Big Bass Bonanza Megaways rules, page 2
Big Bass Bonanza Megaways rules, page 3
Big Bass Bonanza Megaways rules, page 4
Big Bass Bonanza Megaways rules, page 5
Big Bass Bonanza Megaways rules, page 6
Big Bass Bonanza Megaways rules, page 7
screen 01 / 07 Big Bass Bonanza Megaways rules, page 1

A short extra reel sits over the four centre columns and adds one symbol to each of them when ways are counted. Outer reels stop at six symbols; the centre four reach six only with that extra cell, for a ceiling of 46,656 ways. The extra reel is scored with the main six; it is not a seventh paying reel of its own. Matches still have to begin on the leftmost main reel.

A bobber can pay from two reels; every other ordinary symbol needs three or more neighbouring reels from the left. When a combination pays, those symbols disappear, the rest drop, and new ones enter from above, and those reel heights stay as they were on the opening spin until nothing else pays. The fishing-net wild lives only on that extra row over reels two to five and cannot stand in for a scatter or a fisherman.

On the base game a fish is an ordinary paying symbol and clears with the rest of a win. During free spins the same fish keeps a cash label from 2x to 4,000x and stays on the board through winning tumbles, dropping with whatever is left. A fisherman, who appears only in the feature, then collects every visible label. Two fishermen on one screen collect that screen twice.

Three bass scatters start ten spins; four, five and six start fifteen, twenty and twenty-five. Every fourth fisherman adds a ten-spin batch. The new spins stay queued until the batch in play finishes, then run at 2x, 3x or 10x on both collections and ordinary wins. Only three such extensions exist.

If a free spin ends with one or two fishermen and no fish, dynamite can drop fish onto empty cells, or a bazooka can redraw every cell except the fishermen. Both events are random. Stated figures are 96.72% RTP, medium volatility, a USD 0.20-240 stake band, and a 4,000x cap that stops leftover free spins. This sample stayed below that cap.

Mechanics7 from the rules screens
  • Megaways
  • Cascading reels
  • Wild symbol
  • Scatter symbol
  • Free spins
  • Retrigger
  • Multiplier
Paytable
x total bet · bar = top payout on a log scale
symbol 23456+
Bobber 2x 5x 10x 25x 50x
Fishing rod — 1x 2x 2.5x 7.5x
Dragonfly — 0.25x 1x 1.5x 2x
Tackle box — 0.25x 0.5x 0.75x 2x
Fish — 0.2x 0.4x 0.6x 1.75x
A — 0.2x 0.4x 0.6x 1.75x
K — 0.2x 0.25x 0.6x 1x
Q — 0.15x 0.25x 0.5x 1x
J — 0.15x 0.25x 0.5x 0.9x
10 — 0.1x 0.2x 0.4x 0.8x

Bet range USD 0.20 – 240 per spin · payouts read from the game's paytable at bet USD 2.00

Verdict

The 10x stage arrived four times

Big Bass Bonanza Megaways answered its own open question in run two: four natural features reached the final 10x stage, on rounds 1792, 1888, 3812 and 8609, and they were the four largest rounds of the two logs, 605.4x, 512.1x, 381.8x and 606.2x. The run returned 122.85% after 90.22%, 106.53% pooled over 20,000 spins and 1,307 stakes ahead, on the same skeleton: a paying spin on 15.45% and 15.4% of rounds, a 0.9x median, 16,915 empty rounds in 20,000 and 107 dry spells running 20 spins or longer, the two longest 54 and 52.

The feature carries the game: 190 natural rounds, one per 105 spins or 9.5 bHz, or nine and a half natural triggers in every thousand spins, paid 81.67x per whole round on average and 50.6x at the median, 72.8% of everything returned, and 45 of them cleared 100x while 22 stayed under 20x, the least 10.25x on round 8050 of run one. Fifty-seven rounds earned at least one ten-spin extension, 23 in run one and 34 in run two, and in run two the fish labels supplied USD 14,792 of the USD 18,550.30 the free spins paid, four fifths; no scatter-free round passed 87x in either run. The longest waits for a trigger were 610 spins in run one and 343 in run two.

There is still no buy button on this build, so the pace is set by the reels alone: a feature about every hundred spins, 102 in run two against 88 in run one, and a base game that paid on one spin in 6.5 in both. The 200-stake bankroll, gone by spin 3,185 in run one, survived all 10,000 spins of run two, which never fell more than 143.7 stakes below its start and peaked 2,664.3 up on spin 4187.

Measured upsides
  • Four features reached the 10x stage in run two, the top four rounds of the page at 381.8x to 606.2x
  • A natural feature every 105 spins over 20,000, 57 of 190 with at least one extension
  • Pooled 106.53% after 90.22% and 122.85%; a 200-stake bankroll lasted all of run two
  • Fish labels supplied four fifths of run two's free-spin money, USD 14,792 of USD 18,550.30
Measured downsides
  • Empty rounds on 84.6% of spins, with 27 blank stretches of 30 or more across the two runs
  • No buy button on this demo, so every feature waits on three scatters
  • Run one closed 978.2 stakes down after a 1,152.1-stake low on spin 8651
  • Twenty-two of 190 features paid under 20x, and no scatter-free round passed 87x
Verdict by run · 2 runs · tap a run to read it
Run 01·2026-09-11·90.22% The strongest feature began with fifteen spins and ended with thirty-five.

The strongest feature began with fifteen spins and ended with thirty-five. On round 5251, fish collections supplied USD 628 of the USD 833.80 return; ways combinations supplied USD 205.80. Later 2x and 3x stages applied to both of those amounts. Ten fishermen produced the two extensions that made that split possible.

The first fifteen spins returned USD 164, the next ten took the total to USD 576.40, and the final ten brought it to USD 833.80. None of the 88 natural features reached the last 10x stage. The log therefore has no recorded 10x batch to show.

The base series produced 8,455 zero-return rounds and a 54-spin blank from 5866 to 5919. Round 5920 then paid USD 438. That pair is one recorded sequence, not a pattern that a dry spell is about to break.

USD 20,000 of ordinary stakes came back as USD 18,043.70, a 90.22% measured result. Approximate bounds at 95% confidence are 71.83% and 108.61%, and 96.72% sits inside them. The video is a separate demo session; the log is the counted sample.

Run 02·2026-09-30·122.85% Four natural features earned all three ten-spin extensions and reached the 10x stage that run one never saw: round 1792 paid USD 1,210.80, 605.4x, with USD 1,102 of it from fish labels; round 1888, 96 spins later, USD 1,024.20; round 3812 USD 763.60; and round 8609 USD 1,212.40, 606.2x, the page record, with USD 1,044 from the fish.

Four natural features earned all three ten-spin extensions and reached the 10x stage that run one never saw: round 1792 paid USD 1,210.80, 605.4x, with USD 1,102 of it from fish labels; round 1888, 96 spins later, USD 1,024.20; round 3812 USD 763.60; and round 8609 USD 1,212.40, 606.2x, the page record, with USD 1,044 from the fish. Together the 102 natural rounds came one per 98 spins, 10.2 bHz, and their whole rounds paid USD 18,691.30, 76.1% of the run's return, 91.62x on average and 51.02x at the median, USD 14,792 of it collected from fish labels; 28 cleared 100x, 10 stayed under 20x, round 925 the least at 12.05x, and 34 earned at least one extension, 23 running to twenty spins, one to 25, two to 30, three to 35 and five to 40. No trigger kept away longer than 343 spins, after round 6214.

Scatter-free rounds topped out at 87x on round 7236, one of four between 50x and 100x, and the base game paid on 15.4% of spins, 0.9x at the median, leaving 8,460 empty rounds: 55 blank stretches ran to 20 spins or more, 15 to 30 or more, and the two longest, 52 spins each, began on rounds 2571 and 6635. The balance dipped to 143.7 stakes down on spin 366, crossed its start for good on spin 372, peaked 2,664.3 stakes up on spin 4187, gave back 1,321.1 stakes by spin 6557 and closed at USD 104,569.70, 2,284.8 stakes ahead, 122.85% of the USD 20,000 wagered; its 2,000-round blocks ran 196.2%, 129.4%, 55.7%, 102.7% and 130.2%, and fifty stakes were spent by spin 67 and a hundred by spin 161, while 200 stakes lasted the whole run.

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 runs2026-09-11 → 2026-09-30
Measured return 106.53% 95% band 89.4–123.7% · declared 96.72%
  • 20,000rounds, all runs
  • 15%rounds that paid
  • 606xbiggest round
  • 1 / 105natural bonus rate
  • 54longest dry streak
return by run, and combineddeclared 96.72%
Run 1 · 2026-09-1110,000 rounds
90.22%95% band 71.8–108.6%
Run 2 · 2026-09-3010,000 rounds
122.85%95% band 94.0–151.7%
All runs20,000 rounds combined
106.53%95% band 89.4–123.7%
65%85%105%125%145%declared 96.72%
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
106.53% after 20,000 roundsdeclared 96.72%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 012026-09-11 10,000 rounds at USD 2.00 · 0 buys · rig 0.5.2 · RTP profile 96.72% measured return90.22%-6.5 pts vs declared 95% band71.8–108.6% natural bonuses88 · 1 / 114 biggest round417x
95% band
71.8–108.6%
rounds that paid
15%
biggest round
417x · round 5,251
longest dry streak
54
natural bonuses
88 · one per 114 rounds
balance start → end
100,000 → 98,044
deepest drawdown
1,463x
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 USD 2.00 · 0 buys · rig 0.8.7 · RTP profile 96.72% measured return122.85%+26.1 pts vs declared 95% band94.0–151.7% natural bonuses102 · 1 / 98 biggest round606x
95% band
94.0–151.7%
rounds that paid
15%
biggest round
606x · round 8,609
longest dry streak
52
natural bonuses
102 · one per 98 rounds
balance start → end
100,000 → 104,570
deepest drawdown
1,321x
lab note · 2026-09-30

Nineteen days after the 90.22% first run, the second returned 122.85% on 30 September, 106.53% pooled across 20,000 rounds, against a printed 96.72%. Free spins came 102 times against 88 and paid 91.62x on average against 70.14x, four of them reaching the 10x stage that the first run never showed, with the page record moving from 416.9x to 606.2x on round 8609; this build still has no buy button.

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 (2026-09-11, 2026-09-30): 20000 ordinary paid rounds, including naturally triggered features, at a fixed USD 2.0 bet on the official Pragmatic Play demo server (jurisdiction 99, RTP profile 96.72%); 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 →

CLOSED RIG OPEN DATA

FAQ

8 questions · answered from the log
Why are some fish still there after a winning tumble?
Lab answer

During free spins, fish survive the clearing step and drop with the remaining symbols, keeping labels from 2x to 4,000x the stake. Their money labels can then be collected by a fisherman. In ordinary play, fish in a winning combination clear normally.

Does that short reel over the middle columns count as ways?
Lab answer

Yes. It adds one cell above each of the four centre reels. At full height that ceiling is 46,656 ways; the on-screen count moves with reel height.

Will four fishermen raise the multiplier straight away?
Lab answer

No, they earn an extra batch of ten spins instead. The current batch finishes first, then the added spins use the new multiplier. The three extensions step through 2x, 3x and 10x; across two runs 57 of 190 natural features earned at least one, and four of run two's reached the third.

Can two fishermen collect the same fish?
Lab answer

Yes, each fisherman collects all visible fish values. Round 564 of the first run supplied a clear example: two fishermen collected a screen worth USD 40 twice, returning USD 80 before the separate ways payment.

Where is the bonus purchase on this version?
Lab answer

The tested demo does not offer one. Its purchase options are empty and the interface has no buy control; all 190 logged features across two runs were natural scatter triggers.

Which multiplier stage did the strongest feature reach?
Lab answer

The 10x stage, four times in run two: rounds 1792, 1888, 3812 and 8609 each opened on ten spins, earned all three extensions and ran to forty, returning USD 1,210.80, USD 1,024.20, USD 763.60 and USD 1,212.40 from a USD 2 stake. Run one's best, round 5251, stopped at the 3x stage with USD 833.80.

After 54 blank spins, was the next one a bonus?
Lab answer

On that first-run sequence, yes: rounds 5866 to 5919 paid nothing, then round 5920 paid USD 438. Run two's two longest blanks, 52 spins each from rounds 2571 and 6635, ended on rounds 2623 and 6687 with USD 14.40 and USD 0.50, and neither was a feature.

How big did a single fish collection get?
Lab answer

In run one, USD 200 at round 1376, where a three-fish screen totalled USD 100 before the 2x stage and one fisherman collected it. Run two's largest single collection was USD 300 on the 38th spin of round 8609, at the 10x stage; the 4,000x label ceiling was never reached in either sample.

Field notes

0 notes
Slotester Labmeasured run · every request logged measured
  • spins20,000
  • bet2.00
  • result+1,307x
  • RTP measured106.5%
  • bonuses190
  • max win, no bonus87.0x

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