Series
Barbarossa series
Barbarossa series: pirate collection mechanics with a rising payout ceiling
Within pirate slots, the Barbarossa series from Peter and Sons occupies the high-ceiling collector niche through 243-way play, free-spin multipliers and a Gonzo-style collection mechanic. Its sequels increase both the scale of the screen and the maximum reward while keeping the bonus focused on gathering value.
Ranked by Slot Score
| Game | Year | RTP | Volatility | Slot Score |
|---|---|---|---|---|
 Barbarossa Double MaxPeter and Sons | 2023 | 94.1% | High volatility | 76 |
 Barbarossa Revenge DoubleMaxPeter and Sons | 2024 | 96.4% | High volatility | 83 |
 Barbarossa Dragon EmpireLatestPeter and Sons | 2025 | 96.57% | High volatility | 81 |
Barbarossa Double Max established the 5x3 foundation in 2023. Cascades, symbol swaps and the DoubleMax multiplier system feed a free-spins round with a 20,000x ceiling, making repeated symbol removal central to the original risk loop.
Where the risk changes
- Barbarossa Revenge DoubleMax: retains the 5x3, 243-way frame but raises the ceiling to 30,000x and shifts emphasis toward its Cheats tool and free-spin multiplier.
- Barbarossa Dragon Empire: expands the layout to 5x5, moves from pirates to dragon-warrior fantasy and pushes the maximum to 40,000x with random wilds and additional free spins.
The franchise is built on escalation rather than cosmetic sequels. Double Max supplies the cascade-driven base, Revenge increases the pressure without changing the reel map, and Dragon Empire enlarges the playing area while preserving the collector and multiplier logic.