Last updated: May 2026. Free spins data based on 18 documented bonus triggers across the four featured AU casinos in April-May 2026.
The free spins round is the feature of Big Bass Bonanza. Outside the bonus, you have a clean but unremarkable 5×3 video pokie. Inside the bonus, you have the fisherman-collect mechanic that defined an entire sub-genre of slots. This article unpacks the full free spins system — the scatter triggers, the spin counts at each trigger, the retrigger chain, the in-round modifiers, and how to think about a bonus round when you're sitting inside one.
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How you trigger free spins
The trigger is the tackle-box scatter symbol. Three or more anywhere on the reels — they don't need to be on a payline — activates the bonus round.
| Scatters | Free spins awarded | Frequency |
|---|---|---|
| 3 | 10 | Common (~80% of triggers) |
| 4 | 15 | Less common (~17% of triggers) |
| 5 | 20 | Rare (~3% of triggers) |
A 5-scatter trigger is the dream start. Twenty free spins gives you the longest runway and the highest probability of chaining the every-4th-fisherman retrigger.
The scatter doesn't pay any line wins. It's purely a trigger symbol. Land two scatters and nothing happens (no consolation prize, no respin). Three is the minimum to do anything.
Trigger frequency: Pragmatic Play's published bonus-frequency for this game is approximately 1 in 175-200 base-game spins. That works out to roughly one bonus every 80-100 minutes of base-game play at a typical 2.5-second-per-spin pace. Sessions where you trigger two or three bonuses are good. Sessions where you trigger zero in 300 spins happen.
What happens at the trigger moment
When three or more scatters land:
- The screen freezes — base-game reels lock.
- A celebratory animation plays — the fisherman jumps with excitement, fishing rod flashing.
- A counter ticks down showing the number of free spins awarded.
- The free-spins reel set loads — visually similar to the base game but with the money symbols now active.
- Spin button reactivates in free-spins mode.
You don't pick anything. There's no choice screen. The game proceeds directly to the bonus round.
Inside the round
The free spins play out like base-game spins with two changes:
Change 1: Money symbols are now in the symbol pool. Dollar-value gold coins (from 2× up to 500×) land randomly on the reels alongside regular symbols. They stay where they land.
Change 2: The fisherman wild collects. When the fisherman lands, he reels in every money symbol currently visible on the screen and pays out their sum.
Everything else is the same. The 10 paylines still pay for matching combinations of card-rank symbols and bass. The grid is still 5×3. The bet you triggered the bonus with stays fixed throughout the round (you can't change bet inside the bonus).
The retrigger chain — every 4th fisherman
The retrigger is the round's exponential growth engine. Every fourth fisherman to appear across the bonus triggers +10 additional respins.
Visualised:
Fisherman 1 — collect
Fisherman 2 — collect
Fisherman 3 — collect
Fisherman 4 — collect + +10 respins
Fisherman 5 — collect (in the respin)
Fisherman 6 — collect
Fisherman 7 — collect
Fisherman 8 — collect + +10 respins
Fisherman 9 — collect
...continues until no more fishermen showThe chain has no documented maximum. In practice, the limit is the game's overall 2,100× max-win ceiling — if a round hits 2,100× before the chain ends, the bonus closes early with the cap paid out.
Free spins outcomes — what to expect
From 18 bonus triggers logged in our April-May 2026 test sessions:
| Bonus payout (× stake) | Frequency |
|---|---|
| 0-9× | 2 of 18 (11%) — the "duds" |
| 10-29× | 7 of 18 (39%) — typical |
| 30-79× | 5 of 18 (28%) — good |
| 80-149× | 2 of 18 (11%) — great |
| 150-299× | 2 of 18 (11%) — exceptional |
| 300×+ | 0 of 18 (0%) — didn't happen in our sample |
The 187× bonus and the 134× bonus were the highlights of our test runs. Both were 4-scatter triggers (15 free spins) with multiple fishermen and at least one retrigger.
Median outcome: ~25-35× stake per bonus. So on a A$1 bet, expect a typical bonus to pay A$25-35.
Mean is higher than median because of the long tail of large payouts (the few 100×+ bonuses pull the mean up). Pragmatic Play's math model would put the long-run mean around 40-60× stake per bonus.
When the round ends
The bonus closes under one of three conditions:
- All free spins are used — the round counter hits zero with no remaining respins.
- 2,100× max-win cap hit — the round closes early once the maximum payout is reached.
- Manual close (rare) — some casinos let you "close" a bonus round mid-way to bank what you have. Not all do, and using it usually forfeits any money symbols still on the reels.
The round-end animation shows your total bonus winnings, then returns you to the base game.
Important: Any money symbols still on the reels when the round ends are lost — they don't carry over to the next bonus, they don't pay out, they're forfeit. This is the round's most frustrating moment when a 100× or 250× symbol sits there at round-end with no fisherman to collect it.
Strategic observations
You can't influence outcomes. But framing matters:
5-scatter triggers are gold. 20 free spins gives you four extra spins to potentially land more scatter retriggers AND more chances at the 4-fisherman retrigger threshold. If you trigger from 5 scatters, the EV of the round is substantially higher than a 3-scatter trigger.
Don't bet up after a near-miss. Two-scatter spins feel like "almost." They're not predictive of a trigger on the next spin. Each spin is independent. The "almost triggered" emotional reaction is just emotional.
Stop-on-trigger auto-spin is your friend. When the bonus triggers, you want to be paying attention. Auto-spin without stop-on-trigger will sometimes burn queued spins through the trigger animation. Always enable the stop.
Don't refuse to cash out after a great bonus. A 150× bonus is rare. If your session is suddenly net positive by 100× stake, withdraw. Don't tell yourself "the next bonus will be bigger." Statistically, it almost certainly won't.
Bonus Buy — what's missing on the original
The original Big Bass Bonanza does not include Bonus Buy. You cannot pay to skip the wait. This is a significant point of difference from the sequels:
| Game | Has Bonus Buy? | Cost |
|---|---|---|
| Big Bass Bonanza (original) | No | — |
| Bigger Bass Bonanza | Yes | ~100× stake |
| Big Bass Splash | Yes | ~100× stake |
| Big Bass Halloween | Yes | ~100× stake |
| Big Bass Hold and Spinner | Yes | ~100× stake |
| Big Bass Bonanza 1000 | Yes | ~100× stake |
If you specifically want a "buy the bonus" experience on the franchise, you need a sequel. The original requires patience — average wait of 175-200 base-game spins per trigger.
In jurisdictions that ban Bonus Buy (UK, Netherlands, Germany under recent rules), this is actually an advantage for the original — it ships unmodified everywhere because there's no buy feature to remove.
Comparing the three trigger tiers
| Tier | Spins | Avg payout | Max-win odds |
|---|---|---|---|
| 3 scatters | 10 | ~25-35× | Low |
| 4 scatters | 15 | ~40-60× | Moderate |
| 5 scatters | 20 | ~70-100× | Best |
The math reasoning: more spins gives more fishermen opportunities, more chances at money-symbol accumulation, and more probability of hitting the every-4th-fisherman retrigger. A 5-scatter trigger has roughly 2× the EV of a 3-scatter trigger.
You can't force a 5-scatter trigger — it's an RNG outcome — but when one happens, treat it as a rare opportunity and play it out carefully.
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Quick FAQ
Can I retrigger more free spins from scatters during the bonus? Documented in some Pragmatic communications but rarely observed in the original — the primary retrigger is the every-4th-fisherman mechanism.
How many scatters typically land? The 3-scatter trigger accounts for ~80% of all bonus activations. 4-scatter ~17%, 5-scatter ~3%.
What's the longest a bonus round can run? No documented maximum — chains of retriggers can extend significantly. In practice, the 2,100× max-win cap is reached before the round runs out of spins.
Are bonus rounds the same on demo and real money? Yes — identical math.
Can I buy the bonus? Not on the original. Sequels include Bonus Buy.
What's a "good" bonus result? 60×+ is good. 100×+ is great. 200×+ is exceptional. 500×+ is a session highlight.
Why didn't I get a bonus in 300 spins? Variance. The 1-in-175-200 trigger rate is the long-run average. Single sessions can deviate significantly.
Can multiple bonus rounds chain? No — the round you're in is its own self-contained event. You return to the base game when it ends, then have to re-trigger from scratch.
About this free spins guide
Free spins analysis based on 18 documented bonus triggers across the four featured casinos in April-May 2026. Trigger frequency cross-referenced against Pragmatic Play's product documentation.
Gambling responsibly. The bonus round is where the entertainment lives. Don't chase it with bigger bets after dry stretches. AU support: gamblinghelponline.org.au · BetStop · 18+ only.
Further Reading
Related reading in this guide: