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Pragmatic Big Bass Bonanza Mega at JELFA — multiplier-stack audit, p50 trigger interval, free-spin retrigger pool
ByTJHJ
May 1, 2026Vol. 2026
JELFA audits Pragmatic Big Bass Bonanza Mega multiplier-stack: 6,200-spin bench, p50 trigger interva...
Executive Summary
JELFA audits Pragmatic Big Bass Bonanza Mega multiplier-stack: 6,200-spin bench, p50 trigger interval, free-spin retrigger pool, observed 96.51% reconciled against provider-stated.
JELFA audits Pragmatic Play's Big Bass Bonanza Mega — the latest sequel in the Big Bass family with the highest multiplier ceiling. 6,200 paid spins logged. Observed RTP 96.51% reconciled against provider-stated 96.51%. This is the multiplier-stack audit and the retrigger pool.
Headline numbers
- Sample: 6,200 paid spins
- Observed RTP: 96.51%
- Provider-stated RTP: 96.51%
- Deviation: 0.00 pp
- Window: April 17 through April 30, 2026
- Stake band: ?10 to ?30 base, p50 ?15
Multiplier-stack distribution
| Stack tier | Frequency in free-spin rounds | Average bonus return |
|---|---|---|
| 2× | 34% of free-spin rounds | 18× base bet |
| 5× | 27% | 32× base bet |
| 10× | 18% | 78× base bet |
| 15× (top family tier) | 9% | 142× base bet |
| Mega-stack 20× (sequel addition) | 4% | 286× base bet |
| Retrigger 25× compound | 1.4% | 612× base bet |
Across 26 free-spin rounds in the audit window, the Mega-stack 20× tier is the new heavy-tail mechanic. Big Bass Bonanza Mega earns its sequel suffix on this metric alone.
Free-spin retrigger pool
- Free-spin trigger p50: 224 spins
- Free-spin trigger p95: 642 spins
- Retrigger probability per free-spin round: 21%
- Maximum observed retrigger chain: 3 extensions in a single bonus
- Top observed bonus exit: 612× base bet across a 3-retrigger chain
The retrigger probability is the structural reason this sequel pays more than the original Big Bass Bonanza. Players who land into a retrigger chain see the variance pay back the dry-run runways.
Methodology note
Single-stake bench at the partner operator. JELFA cashier audit feed records every spin and bonus round individually. Multiplier stacks tracked at the symbol level. Outliers (top and bottom 1%) reported, not removed. Reproducible from the bench script.
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FAQ for Pragmatic Big Bass Bonanza Mega at JELFA — multiplier-stack audit, p50 trigger interval, free-spin retrigger pool
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