Das xBoot 2 (Zwei!): The Ultimate Submarine Hunt

Dive, dive, dive! Nolimit City is back on patrol with the highly anticipated sequel, Das xBoot 2 (Zwei!), and the crew has been submerged for over four years. The mission remains one of high-stakes and danger: hunt prey and don't get spotted. This submarine has been upgraded to be stealthier and deadlier than before, built for clearing sea mines, dodging enemy patrols and picking off destroyers.

The sequel delivers an Extreme Volatility experience (rated 10), armed with Nolimit City’s full arsenal of xMechanics and an absolutely massive 59,999x Max Win. From the Periscope Up! feature that expands the reel set to the Golden Torpedo Builder, this is a hunt for high-risk, high-reward action.

Game Vitals and Performance

The game maintains Nolimit City's reputation with an Extreme volatility rating of 10. The maximum payout is capped at an impressive 59,999 times the base bet. When the total win exceeds this amount, the game round ends, and the maximum payout is awarded. Hitting the max win has a probability of 1 in 25.3 million spins (with the 95.94% RTP option). The standard Return to Player (RTP) is 95.94%. The minimum bet is $€£ 0.20, and the maximum bet is $€£ 100. The reel set uses a dynamic row structure, starting at 2-3-4-4-3-2 and expanding up to 2-4-8-5-4-2. The game features 576+ WIN WAYS. A Bonus mode is triggered approximately 1 in 273 Spins.

Nolimit City's Signature x-Features

The core gameplay relies on Nolimit City's powerful mechanics that dynamically alter the grid and multiply payouts.

1. xNudge®: This is a 4-row high symbol that always nudges until fully visible. Crucially, each nudge increases a multiplier by 1. All accumulated multipliers are added together before the win calculation. It normally lands on reels 3 and 4, though it is restricted to reel 4 during the Periscope Up! feature.

2. xWays®: These land exclusively on reels 2 and 5. They reveal a random regular symbol. The symbol size can range from 2 to 3 symbols. If multiple xWays® symbols appear, they all reveal the identical symbol type.

3. xBomb®: This symbol substitutes for all symbols except the Bonus symbols. When it explodes, it removes all symbol types that are not part of a winning combination (excluding Bonus and other Wild symbols). This triggers a collapse, where remaining symbols fall and new symbols fill the reel area. It increases the overall win multiplier by +1 before the collapse occurs. This multiplier is carried forward to the bonus spin modes when triggering the feature.

Payouts and Paytable Analysis

While the game is designed for explosive wins via the features, the base paytable reflects the high-volatility model.

The highest paying symbol awards 5.00x the bet for a cluster of 6, while the lowest paying symbol awards 0.60x for 6 symbols, and 0.20x for 3 symbols.

The maximum base game payout for a 6-symbol win is 5.00x the bet. The regular symbol wins act primarily as a means to sustain the balance while hunting for the volatile special features.

Advanced Features & Bonus Modes

The game features several high-potential features that can be triggered in the base game or via Bonus symbols.

Periscope Up!

Reel 3 grows to 8 positions and a new symbol can appear. If a torpedo launch sequence is initiated (connecting symbols on reels 1 & 2 with the symbol on reel 3) and the target is hit, the symbol grows and nudges, adding a win multiplier for each nudge. If the target is missed, the symbol is treated as a single symbol. This feature can trigger randomly in the Base Game and Wolf Pack Spins, and is always active in Silent Hunter and Battle of the Atlantic Spins.

Torpedo Builder

This is triggered in the Base Game and Silent Hunter Spins by landing a full boat in the Binocular above reels 5 and 6.

• A Torpedo tube appears under reels 2-5, and only Torpedo parts land there. Reels 1 & 6 are closed.

• Players get 3 spins to build 4 Torpedo parts.

• Torpedo parts drop onto the reels, awarding +1, +2, or +3 for xWays® (reels 2 & 5) or xWays® Wilds (reels 3 & 4).

• Once all 4 parts are filled, the Torpedo launches, revealing the collected ways as expanding symbols (regular symbols on reels 2/5, Wilds on reels 3/4).

• Golden Torpedo Builder is a premium version, triggered by landing a golden boat. The parts awarded will only have massive values of either +8 or +88.

Free Spin Modes

Landing Bonus symbols (on reels 1-6) triggers three levels of free spins:

• Silent Hunter Spins (8 Spins): Triggered by 3 Bonus symbols. The Periscope Up! feature is always active. The symbol nudge awards a persistent multiplier that applies to the hit spin and grows by +1 per nudge. The xBomb® multiplier increases the overall spin multiplier by +1 for the remainder of the bonus.

• Wolf Pack Spins (9 Spins): Triggered by 4 Bonus symbols. The Torpedo Tube is active and pre-loaded with xWays and xWays Wilds of size 2 at the start. Torpedo parts leave behind a Wild when they detach from the reels. Launching the torpedo (by landing a full boat in the Binocular) enhances a new tube, which can then be enhanced further. The xBomb® multiplier increases the bonus multiplier by +1 for the remainder of the spins.

• Battle of the Atlantic Spins (10 Spins): The ultimate bonus, triggered by 5 Bonus symbols. This mode combines both the Periscope Up! feature and the Torpedo Builder feature. The xBomb® multiplier increases the bonus multiplier by +1 for the remainder of the spins.

In all three bonus modes, additional Bonus symbols landed award +2 spins.

Extra Spin Mechanic

After any free spin mode (Silent Hunter, Wolf Pack, or Battle of the Atlantic Spins) concludes, players are presented with an opportunity to purchase an additional spin. This mechanic is highly strategic, as the purchased spin keeps any existing bonus multipliers and the Torpedo Tube progress intact. The offer to buy the spin is only presented if the cost is less than or equal to the total win accumulated during the preceding bonus round

Nolimit Booster (Feature Buy)

Players can buy direct entry or guaranteed feature triggers using the Nolimit Booster options.

• Bonus Booster: Costs 1.5x the base bet for a guaranteed Bonus symbol.

• Periscope Up!: Costs 8x the base bet for a guaranteed Periscope Up! trigger.

• Torpedo Booster: Costs 20x the base bet for a guaranteed Torpedo Builder trigger (normal boat).

• Golden Torpedo Booster: Costs a hefty 4,500x the base bet for a guaranteed Golden Torpedo Builder trigger (golden boat).

• Bonus Buy Options: Direct entry into Silent Hunter Spins costs 80x bet, Wolf Pack Spins costs 250x bet, and Battle of the Atlantic Spins costs 750x bet.

Final Verdict: Prepare for Depth Charges

Das xBoot 2 (Zwei!) is a masterclass in highly-volatile, feature-rich slot design. Nolimit City has seamlessly woven together its core mechanics—xNudge, xWays, and xBomb—with two unique and high-potential features: Periscope Up! and the Torpedo Builder. The decision to combine these mechanics in the ultimate Battle of the Atlantic Spins shows the developer's commitment to creating truly explosive win potential. While the base game payouts are minimal, this is entirely intentional; the game is a patient hunt for the features, which is where the real 59,999x chaos begins.