Series
Das xBoot series
Few military slots make changing reel geometry as central as NoLimit City's Das xBoot series, a submarine-combat niche built around xWays, splitting symbols, and xNudge movement. Das xBoot pushes that formula through a 6x4 layout with 75,712 ways, expanding reels, wild multipliers, symbol swaps, and a 55,200x maximum. The first Das xBoot game ties its high volatility to a reel system that can alter both symbol size and available ways.
Ranked by Slot Score
| Game | Year | RTP | Volatility | Slot Score |
|---|---|---|---|---|
 Das xBootNoLimit City | 2021 | 94.02% | High volatility | 73 |
 Das xBoot ZweiLatestNoLimit City | 2025 | 95.94% | High volatility | 71 |
Das xBoot Zwei retains splitting symbols, xWays, and xNudge but moves to an uneven 3x4x4x4x4x2 frame. A 1,024-way multiway layer, additional free spins, random multipliers, and a bonus bet redirect the sequel toward repeated feature modification. RTP rises from 94.02% to 95.94%, but the more important change is architectural: Zwei makes the asymmetric reel map part of the risk calculation from the outset.