Play Demo
Pressure gauges rattle. Sonar pings echo off hull plating. The crew stare out from the reels with expressions ranging from grim determination to outright panic. Das xBoot 2wei! is Nolimit City’s sequel to their submarine warfare slot, and it drops you into a U-boat with the kind of atmosphere most games don’t even attempt. The soundtrack shifts between war drums and something closer to industrial electronica the moment you start spinning, and every hit triggers layered sound effects that make the hull feel alive. Behind the immersion sits a 576-way grid loaded with four of Nolimit City’s signature xMechanics, three escalating bonus tiers, and a 59,999x max win.
A four-row-high Wild symbol that always nudges to full visibility when it partially lands on the grid. Each nudge increases the Wild’s multiplier by 1, so a Wild that nudges three positions down carries a 3x multiplier before wins are calculated. The xNudge Wild can land on reels 3 and 4 during regular play, but only on reel 4 during Periscope Up! activations. When multiple multipliers exist on the grid, they add together and the total is applied to the win.
The xWays symbol lands exclusively on reels 2 and 5. When it appears, it reveals a random regular symbol and expands to cover 2 or 3 positions on that reel, increasing the total number of winning ways beyond the default 576. If multiple xWays symbols land in the same spin, they all reveal the same symbol, which can create dense clusters across the grid.
The xBomb Wild substitutes for every symbol except the Bonus scatter. When it forms part of a winning combination, it detonates and destroys all symbol types on the grid that aren’t part of that winning combination (Bonus symbols and other Wilds survive the blast). Remaining symbols collapse downward, new symbols fill the gaps, and the xBomb increases the win multiplier by 1 before the collapse resolves. That multiplier persists through cascades and carries forward into any bonus round triggered during the same spin.
When Periscope Up! activates, reel 3 expands to 8 positions and a special Periscope Wild can land on it. If the Periscope Wild appears, a torpedo launch sequence plays out. A target is located through the periscope view, and a torpedo is fired. If it hits, the Periscope Wild grows to fill the entire reel from top to bottom, nudging downward and adding a win multiplier for each nudge. If the torpedo misses, the Periscope Wild acts as a single standard Wild instead.
In the main game and Wolf Pack Spins, Periscope Up! triggers randomly. In Silent Hunter Spins and Battle of the Atlantic Spins, it’s permanently active on every spin.
A two-symbol-wide Ocular sits above reels 5 and 6. When a full boat image lands in the Ocular during regular play or Silent Hunter Spins, the Torpedo Builder activates. Reels 1 and 6 close, a torpedo tube appears beneath reels 2 through 5, and you get 3 spins to assemble the torpedo’s four components.
On reels 2 and 5, torpedo parts drop +1, +2, or +3 xWays symbols into the torpedo area. On reels 3 and 4, the parts drop xWays Wild symbols of the same sizes. Once all four parts are collected (or a full boat appears in the Ocular again), the torpedo launches and the collected xWays symbols deploy across their respective reels. The result is a single massive spin with expanded ways and Wild coverage across the middle reels.
The Golden Torpedo Builder variant triggers when a golden boat fills the Ocular. In this version, torpedo parts only carry values of +8 or +88, producing significantly larger xWays expansions when the torpedo fires.
Bonus scatter symbols (the green radar) can land on any reel. The number collected determines which bonus tier you enter.
Silent Hunter Spins (3 scatters, 8 spins) — Periscope Up! is active on every spin. The Periscope Wild awards a persistent multiplier that starts at 1x after the first nudge and grows by 1 with each subsequent nudge. Each xBomb landing increases the win multiplier by 1 for the rest of the round. Additional Bonus scatters during the feature award 2 extra spins.
Wolf Pack Spins (4 scatters, 9 spins) — The Torpedo Builder is active throughout. The torpedo tube starts pre-loaded with xWays and xWays Wilds of size 2. Torpedo parts that land detach from the reels and leave a Wild symbol behind. Each time a full boat appears in the Ocular, the current torpedo launches and an identical replacement loads in, ready to be upgraded further. xBomb multipliers persist for the duration. Additional scatters add 2 spins.
Battle of the Atlantic Spins (5 scatters, 10 spins) — Both Periscope Up! and the Torpedo Builder run simultaneously. Every system in the game fires at once. xBomb multipliers, Periscope nudge multipliers, and torpedo-deployed xWays all stack together. Additional scatters add 2 spins. This is the highest-variance mode and the most likely path to wins near the 59,999x ceiling.
Nolimit Boosters are per-spin cost modifiers that guarantee specific feature activations. Bonus Booster (1.5x base bet) guarantees a Bonus scatter symbol each spin. Periscope Booster (8x) guarantees a Periscope Up! trigger. Torpedo Booster (20x) forces a Torpedo Builder activation. Golden Torpedo Booster (4,500x) guarantees the premium Golden Torpedo Builder.
Direct feature buys are also available. Silent Hunter Spins cost 80x the bet, Wolf Pack Spins cost 250x, Battle of the Atlantic Spins cost 750x, and a Lucky Draw (50% Silent Hunter, 25% Wolf Pack, 25% Battle of the Atlantic) costs 290x. Maximum bet limits apply to the higher-tier purchases.
When any bonus round ends, you may be offered an Extra Spin purchase that preserves all existing multipliers and torpedo progress. The cost scales with the current game state, and it’s only offered if the price doesn’t exceed your total win.
The default RTP for Das xBoot 2wei! is 95.94% during regular play, climbing to 96.07% when using the Lucky Draw feature buy. Reduced-return versions are available to operators at 94.02% and 92.03%. The game’s rule screen will tell you which RTP build you are playing.
Six reels arranged in a 2-3-4-4-3-2 diamond-shaped configuration give Das xBoot 2wei! its default 576 winning ways. The grid can expand during Periscope Up! when reel 3 grows to 8 positions, and further still when xWays symbols and torpedo deployments add extra symbol positions across the middle reels. At maximum expansion, the configuration reaches 2-4-8-5-4-2.
Wins form by matching symbols on adjacent reels from left to right, starting from reel 1. Only the highest win per symbol per bet way is paid, but coinciding wins on different symbols are paid out together. Spin costs run between £0.20 and £100. The volatility is extreme, rated at the top of Nolimit City’s scale, with a 21.75% hit frequency. The max win caps at 59,999x total stake, branded in-game as “Nein! Nein! Nein! Nein!” in keeping with the theme.
The default RTP is 95.94%, rising to 96.07% with the Lucky Draw feature buy. Operators may offer reduced-return versions at 94.02% or 92.03% — the rule screen will confirm which build you are playing.
All values are quoted at a £1.00 spin cost and move in step with whatever bet level you run.
| Symbol | 6 Matches | 5 Matches | 4 Matches | 3 Matches |
|---|---|---|---|---|
| Captain | 5.00 | 3.00 | 1.75 | 1.00 |
| Weapons Commander | 3.00 | 2.00 | 1.25 | 0.75 |
| Sonar Operator | 2.00 | 1.50 | 1.00 | 0.40 |
| Engineer | 1.50 | 1.20 | 0.80 | 0.40 |
| Mechanic | 1.00 | 0.70 | 0.50 | 0.30 |
| A | 0.90 | 0.65 | 0.40 | 0.25 |
| K | 0.80 | 0.60 | 0.40 | 0.25 |
| Q | 0.70 | 0.50 | 0.35 | 0.20 |
| J | 0.65 | 0.45 | 0.30 | 0.20 |
| 10 | 0.60 | 0.40 | 0.30 | 0.20 |
The five crew members serve as premium symbols, with the Captain topping the table at 5x for a six-reel connection. The card royals are rendered as rusted, barnacle-crusted metal panels that fit the submarine aesthetic. Base symbol values look modest, but the game’s multiplier-stacking systems and xWays expansions mean individual cascade sequences can compound these values rapidly. The game carries 16 symbols in total, four of which are different Wild types.
If you play Nolimit City slots for the atmosphere and the volatility ceiling, Das xBoot 2wei! is one of the strongest cases in their catalogue. Three escalating bonus tiers, four distinct Wild types, a torpedo-building system that has no real parallel in other slots, and a 59,999x max win anchored to an extreme-volatility math model. The submarine theme is fully committed and the sound design is exceptional. Complex to learn, deeply rewarding once it clicks.
The art direction follows the studio’s signature gritty illustration style: the Captain scowls through a fur-lined collar, the Weapons Commander grips a shell casing against a red-hot barrel glow, and a dead-eyed Sonar Operator peers out from behind a porthole. Even the card royals look like they’ve been welded to the hull and left to corrode. It’s a visual commitment to the setting that never breaks character.
The soundtrack is where this game truly pulls you in. Load the demo, and you’ll hear ambient submarine hum. Start spinning, and it shifts into something between military percussion and a low industrial beat with an almost hip-hop cadence to it. Hits trigger metallic clangs and mechanical whirs layered over each other. It shouldn’t work as well as it does. The effect is a game that feels claustrophobic and pressurised in exactly the way a submarine slot should.
During our session, the base game produced more action than expected for an extreme-volatility title. That 21.75% hit frequency means dry spells still dominate, but xBomb detonations and xWays expansions created occasional cascade chains that returned 12x or more from a single spin. The xNudge Wild nudging into view on reels 3 and 4 with its climbing multiplier added punctuation marks between the longer cold stretches. Thirty-way hits weren’t uncommon when xWays symbols landed on reels 2 and 5 simultaneously.
The three bonus tiers give the game its structural identity. Silent Hunter Spins feel like a focused sniper round, built around the Periscope Wild and its persistent nudge multiplier. Wolf Pack Spins shift the dynamic entirely by activating the Torpedo Builder, where you’re assembling xWays components across 3 spins before launching them all at once. Battle of the Atlantic fires both systems simultaneously, and the density of overlapping multipliers, expanding ways, and Wild coverage can make the screen almost impossible to read at peak activity. That chaos is the point.
As a sequel, Das xBoot 2wei! expands on the original in meaningful ways. The first Das xBoot topped out at 55,200x with fewer feature layers. This version pushes to 59,999x, adds the Torpedo Builder and Golden Torpedo Builder as entirely new systems, introduces Wolf Pack Spins and Battle of the Atlantic as additional bonus tiers, and pre-loads torpedo tubes in the higher modes. The added density changes how sessions play out. Where the original was already complex, this game demands attention on every spin.
The buy-in costs scale steeply. Wolf Pack at 250x and Battle of the Atlantic at 750x are serious commitments that can return close to nothing. Our review session didn’t include a purchased bonus, but the main game’s ability to deliver engaging moments without buying in is a genuine strength. You don’t need to spend 750x to feel like something is happening.
Free play gives access to every feature, every booster tier, and every buy-in option. A few demo sessions is the minimum needed to understand how the Torpedo Builder, Periscope Up!, and the xBomb multiplier interact — the learning curve is real. This is not a game you pick up in five spins. It rewards the time you invest in learning it.
Nolimit City’s catalogue on Ultimate Slots includes several other sequel-generation titles worth comparing. Mental 2 and San Quentin 2: Death Row push similar extremes of volatility and max-win potential. Fire in the Hole 3 follows the same pattern of layering new systems onto an established framework. For a nautical theme overlap, Seamen plays the ocean lightly and with less complexity. Das xBoot 2wei! sits at the heavy end of all these spectrums: the deepest feature set, the most committed atmosphere, and one of the highest max-win ceilings in the entire Nolimit City lineup.
