Introduction to Das xBoot 2

Das xBoot 2 is a casino slot from Nolimit City, once again letting you become the terror of the ocean depths while commanding a German submarine. Being a sequel to a 2021 release, Das xBoot, this intense production expands the studio's selection of WW2-themed slots, which also includes such titles as Pearl Harbor and D Day. In the follow-up, the mighty U-Boot carries a similar arsenal of features as before, but, unlike its predecessor, it doesn't limit many of them to the bonus rounds and instead packs the base game to the brim with the devastating power of torpedoes. Both the Periscope Up! and Torpedo Builder mechanics known from the original will be available throughout every stage of the mission, and this time, they can even combine in the final free spins round to 'unleash ultimate carnage', as the creators stated themselves.

Join the crew and set off on a hunt for wins up to 59,999x the bet, or, if you need a bit more training before enlisting, try the demo mode, where the gameplay is risk-free.

Base Game view of a 6-reel grid fitted onto submarine machinery underwater.
Base Game

Theme, Gameplay & Payouts

Das xBoot 2 is a video slot from Nolimit City with 6 reels and a 2-3-4-4-3-2 row setup, which can grow to 2-4-8-5-4-2. Each spin begins with a default 576 ways to win; however, with the use of features like Periscope Up! and xWays, that number can increase. The available stake range starts from a Min.bet of 0.20  and goes up to a Max.bet of 100. Behind the reels, a default RTP of 95.94% runs the game's engine, being slightly below the industry average, so be aware of potential lower long-term returns. A couple of lower variants of 94.02% and 92.03% were also released, so make sure to check the version before playing. More valuable wins can be fewer apart when there's a hit, as the math profile comes with a high (extreme) volatility rating, while the maximum win you can land within a single game round is 59,999x the bet. Free spins trigger at an average rate of 1 in 273 spins, whereas wins exceeding 100x the bet occur with a frequency of 1 in 734 spins.

On our second mission, we're commanding another powerful vessel, equipped with all kinds of machinery fitted around the playing grid. The submarine is in constant motion, slowly traversing the depths, evading the omnipresent naval mines and searching for its next target to appear in the periscope. The foreboding music, peppered with sounds of bubbling water, builds the intense atmosphere and prepares us for inevitable confrontation. Through the banged-up low symbols and chaotic expressions on the crew members' faces on the premium ones, we can see that being on a U-Boot is no cakewalk, even when things are calm for a moment. If you're ready to jump in and face the odds, the game can be played on a wide range of modern devices, from desktops to smartphones and tablets.

Symbols in the paytable are divided into two sections, and you'll need between 3 and 6 matching ones landing on adjacent reels, starting from the leftmost one, to score a win. The low-value group includes playing card emblems, 10, J, Q, K, and A, placed on steel sheets, awarding from 0.6x to 0.9x the bet for 6 in a combination. High-paying symbols are represented by five crew members: a cook, a radio operator, a mechanic, a navigator, and the captain. Their rewards range from 1x to 5x the bet for a 6-of-a-kind hit. Alongside the regular line-up, there are also xNudge Wilds in the form of a war medal with a red ribbon, xWays symbols appearing as a war medal with a blue ribbon, and xBomb symbols depicted as a naval mine. Bonus symbols are represented by an image of a sonar.

Special Features & Slot Mechanics

What is the max win in the slot Das xBoot 2?

You can win up to 59,999x the bet.

What features are available in the slot Das xBoot 2?

The features are xNudge Wild, xWays, xBomb, Periscope Up!, Torpedo Builder, Silent Hunter Spins, Wolf Pack Spins, Battle of the Atlantic Spins, Nolimit Booster, and Feature Buy.

Battle of the Atlantic Spins bonus in progress, showing a high win achieved after the Torpedo Builder feature trigger.
Battle of the Atlantic Spins

xNudge Wild

xNudge Wild are 4-stacked symbols that may land only on reels 3 and 4 during regular spins and only on reel 4 during the Periscope Up! feature. Whenever they appear, they nudge to cover the entire reel and increase their multiplier by 1 for every step taken. If more than one xNudge Wild participates in a winning combination, their multipliers are added together before being applied to the total win.

xWays

xWays symbols appear only on reels 2 and 5. After landing, all xWays symbols present on the grid transform into the same paying symbol, and each position reveals 2 or 3 instances.

xBomb

xBomb acts as a regular Wild, substituting for other regular symbols, and explodes when initial wins have been evaluated. The explosion removes all symbols from the grid, except Bonus symbols and Wilds. Next, a new set of symbols is added to the view to potentially award more wins. Each explosion also increases the current global win multiplier by 1.

Periscope Up!

The feature may trigger randomly on any spin and increase reel 3 to 8 positions high. A special Periscope Wild may land on it during the spin and activate a torpedo launch. If the missile hits the target, the Wild grows toward the top of the reel and then nudges down to cover it entirely, increasing the multiplier by 1 for every step it takes. If the torpedo misses, it acts as a regular single Wild.

Silent Hunter Spins bonus in progress, showing the Periscope Up! feature triggered, covering the third reel with Wilds.
Silent Hunter Spins

Torpedo Builder

A 2-symbol wide ocular sits above reels 5 and 6. Whenever a full boat appears in it, the Torpedo Builder feature will activate. The game enters a 3-respin mode with only reels 2 through 5 active and an additional horizontal Torpedo area underneath. During these spins, you can only land xWays and xWays Wild symbols, which will drop to their respective positions in the Torpedo area below. Each symbol can hold a value of +1, +2, or +3. Once all spins are used and all four positions of the Torpedo area are occupied, they transform into xWays symbols and Wilds with the respective number of instances collected during the feature.

If a golden boat appears in the ocular, the Golden Torpedo Builder feature will be triggered, charging active symbols with values of only +8 or +88.

Silent Hunter Spins

Landing 3 Bonus symbols anywhere on the grid at the same time activates 8 Silent Hunter Spins. During the game, the Periscope Up! feature is always active, and any multiplier increase coming from it and xBomb remains persistent throughout the round.

Wolf Pack Spins

With 4 Bonus symbols landing simultaneously during the base game, you'll trigger 9 Wolf Pack Spins. From the start, the Torpedo area below the grid will be active and pre-loaded with all four parts of the missile, each with a value of 2. You can further increase them by landing corresponding symbols on the respective reels, similarly to the Torpedo Builder feature. Each time the ship appears in the ocular, the launch will occur and transform the Torpedo area positions into xWays and Wilds with the assigned number of instances. All its values grow persistently throughout the game, as do the multipliers achieved from the xBomb explosions.

Wolf Pack Spins bonus in progress, shwoing a win created after the Torpedo Builder feature trigger.
Wolf Pack Spins

Battle of the Atlantic Spins

Score 5 Bonus symbols during the same base game spins, and you'll be rewarded with 10 Battle of the Atlantic Spins. In this mode, features from both previous bonus games are active together, along with a persistent multiplier increased by xBombs. In all bonus modes, each Bonus symbol landing awards 2 extra spins.

At the end of either bonus, you may have the option to use the Extra Spin function, which allows you to purchase an additional round for a price calculated based on the conditions achieved on the last free spin. The option will appear only if the cost of the spin is less than or equal to the total win achieved from the bonus.

Nolimit Booster

To enhance your base game spins, you can use several options available in the Nolimit Booster menu.

1.5x = Bonus Booster, guaranteeing one Bonus symbol on each spin.

8x = trigger the Periscope Up! feature.

20x = trigger the Torpedo Builder feature.

4,500x = trigger the Golden Torpedo Builder feature.

Feature Buy

If you want to skip the base game grind, you also have the possibility of triggering any of the bonus rounds instantly.

80x = 8 Silent Hunter Spins.

250x = 9 Wolf Pack Spins.

750x = 10 Battle of the Atlantic Spins.

290x = Lucky Draw with 50% chance for Silent Hunter Spins and 25% each for the two other modes.

Final Thoughts on Das xBoot 2

The original Das xBoot was an exceptionally unique release and another loud statement from Nolimit City that the studio can turn any topic into an immersive journey packed with ingenious mechanics. We were absolutely blown away by the meticulous approach to incorporating all the game's features seamlessly into the submarine theme and making them an integral part of the gaming area, and not just arbitrary assisting pop-ups. The reel expanding to eight positions high like a rising periscope and pieces of torpedoes being assembled in a special chamber - it all contributed to a fascinating experience. And it seems like the creators have followed the 'if it ain't broke, don't fix it' motto, as we're seeing much of the same in Das xBoot 2. Despite the imagery being reused to a large extent, it's still an intense environment, accurately capturing the atmosphere of naval warfare filled with determination and often desperation. Also, we can clearly see that the crew has not sat idle under the surface, as the entire vessel acting as the playing area seems a bit more worn and damaged, while the members seem to hold tightly to the last shreds of sanity in their minds.

The gameplay, which shifted much of the action from the bonus rounds to the base stage, is where Das xBoot 2 makes strides. Some key features, accessible only during free spins in the original, can now randomly kick in during regular spins, so it's not all about hunting those blips on the sonars of Bonus symbols anymore. Well, this may not be entirely fair to say, because even in the first one, there were xNudge Wilds, xBombs, and xWays symbols to boost the engagement, and they did a splendid job at doing so. But now, with Periscope Up! and Torpedo Builder available on any standard spin, there are so many more possibilities for unexpected wins. Crowning this new arrangement, we've got Battle of the Atlantic Spins, which merge everything in one packed bonus round, where all features come together so that you can see that 59,999x max win through the periscope. In summary, the game does what a proper sequel should, which is turning up the dial on nearly every part of the gameplay while maintaining the unforgettable atmosphere of the original.

Das xBoot 2 returns with an arsenal of mighty features to deliver another chapter of intense naval warfare packed with non-stop action.