Series
Ultra series
Ultra Series: Reel Kingdom's compact fruit-machine lane
Among compact fruit machines, Reel Kingdom's Ultra series occupies the stripped-back 3x3 niche with unusual consistency: five paylines, fruit-and-fire imagery, and a short path from spin to result. Ultra Burn fixed that role in 2020 with medium/high volatility, 95.63% RTP, and a 500x maximum win.
Ranked by Slot Score
| Game | Year | RTP | Volatility | Slot Score |
|---|---|---|---|---|
 Ultra BurnReel Kingdom | 2020 | 95.63% | Medium/High | 53 |
 Ultra Hold and SpinReel Kingdom | 2020 | 96.65% | High volatility | 72 |
 Ultra Burn DiceLatestReel Kingdom | 2025 | 96.62% | High volatility | 73 |
Ultra Hold and Spin made the meaningful mechanical move. It kept the same screen, line count, and 500x ceiling, then added respins, bonus symbols, expanding wilds, and a hold-and-win round. Its high-volatility profile and 96.65% RTP make it the sharper bonus-led branch rather than a cosmetic sequel.
Ultra Burn Dice returned to the Burn name in 2025 while preserving the 3x3, five-line chassis. At 96.62% RTP and high volatility, it sits mathematically closer to Hold and Spin than to the original. The Ultra identity therefore rests on a deliberately small fruit-machine frame, with the sequels changing the pressure around that frame rather than enlarging it.