Series
Royal Xmass series
Royal Xmass series: how Endorphina rebuilt its seasonal formula
The Royal Xmass series is Endorphina's Christmas-and-crown franchise, built on multiplier bonuses, scatter triggers and a risk/gamble double game. The holiday imagery stays fixed while the underlying format moves from a 4096-ways free-spin slot to cascading Dice variants and then Pay Anywhere.
Ranked by Slot Score
| Game | Year | RTP | Volatility | Slot Score |
|---|---|---|---|---|
 Royal XmassEndorphina | 2021 | 96.01% | — | 73 |
 Royal Xmass DiceEndorphina | 2023 | 96.01% | High volatility | 80 |
 Royal Xmass 2 DiceLatestEndorphina | 2025 | 96.05% | High volatility | 84 |
Royal Xmass set the baseline in 2021 with a 6x4 layout, 4096 ways, wilds, free spins and a Bonus Buy. The 2023 Royal Xmass Dice kept 4096 ways but changed the grid to 5x5, introduced cascading wins and pushed the listed maximum to 93,750x under a high-volatility profile.
Royal Xmass 2 Dice changes direction again. Its 6x5 Pay Anywhere system adds free-spin multipliers, random multipliers and extra-spin awards, while the maximum drops to 25,000x. Dice therefore marks a mechanical branch rather than a simple visual sequel: the first version favors conventional free-spin access, the next emphasizes a very high ceiling, and 2 Dice concentrates on multiplier growth across a larger grid.