Happy Prison — Bonus Features
Free Spins with unlimited retrigger plus Super Scatter symbol removal. The two features that make Happy Prison's 10,000x max win reachable — and the math behind why most rounds won't get there.
All Features
Free Spins (10+)
TriggerLand 3 or more Super Scatter symbols anywhere on the 6×4 grid in a single base-game spin.
Unlimited Retrigger
TriggerLand 3 or more Super Scatters during an active Free Spins round.
Super Scatter
TriggerA single Super Scatter symbol counts toward the 3-scatter trigger requirement and continues to act as a scatter during the feature for retriggers.
Bonus Buy
TriggerPlayer purchase from the base-game side menu (jurisdiction-dependent — UK and Sweden block this option).
Buy Feature Options
| Option | Cost | RTP | Avg Return | Risk |
|---|---|---|---|---|
| Natural Free Spins (3 scatters) | Free (~180 spins avg wait) | 96.07% | ~65x | High |
| Bonus Buy | ~80-100x | 96.05% | ~65x | High |
Trigger Probabilities
Base Game
Free Spins trigger (3+ scatters)~1 in 180 spins
Retrigger during Free Spins~1 in 8 feature rounds
Double retrigger (same round)~1 in 60 feature rounds
Win Milestones
Any paying spin~25% (1 in 4 spins)
Win over 10x~1 in 60 spins
Win over 100x~1 in 2,000 spins
Win over 1,000x~1 in 50,000 spins
Max win (10,000x)~1 in 2,000,000 spins