Das xBoot

|Nolimit City|2021-09-14|RTP: 96.05 %
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Game provider
Nolimit City
Das xBoot
Feature Buy
Game type
Video Slots
Mobile version
Grid slot
Sticky wilds
Free spins
Bonus game
Very high
Progressive jackpot
Min. bet
Random Feature
Max. bet
Maximum win
Last update
September 10, 2021


3 votes - 4.00/5.00

Torpedo Los! Immerse yourself in the claustrophobic and disturbing world of German U-boat warfare on the volatile release from Nolimit City. Das xBoot gives the classic book and film the x treatment featuring four unique wild symbols, xWays, xNudge Wild and xBomb Wild Multiplier boosters, dynamic reels, cascading symbols, increasing multipliers plus persistent multiplier modifiers and two free spins bonuses with a bonus buy to dive! dive! dive! straight into, for action-packed wins of up to 55,200 times your bet.

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Slot Details

Das xBoot is a video slot with 6 reels in a 2x3x4x4x3x2 format as standard, with from 576 up to 75,712 ways to pay. Wins are awarded for matching three or more symbols from the leftmost reel moving right in any position. You can join the crew from 0.25 credits to 100 credits per spin and this game has a 10/10 Extreme volatility rating, a hit frequency of roughly one in five and an RTP of 96.03%. Be aware, Das xBoot will also come in a second version with an RTP of 94.04% for casinos to choose. You can check the in-game rules to find out which version you are playing.

Das xBoot is moody and atmospheric with sounds of metal clunking under pressure, radar pips for bonus symbols and the occasional whale call, immersing players into the claustrophobic feel of covert submarine operations. Call to action alarms break the silence and pipes burst through pressure for bonus teases and triggers. This combination of sounds cleverly mimics the interruption of long waiting periods associated with clandestine submarine warfare that would jumpstart crews into battle stations. The graphics are of outstanding quality in a realistic cartoon style and Nolimit City set the bar again with Das xBoot, for rival developers to follow.

Nolimit City Das xBoot base game screen capture

The pay symbols start at the low end with 10, J, Q, K and A, which pay from 1.4 to 2.8 times your stake for six of a kind. Five characters complete the pay symbols from the cook to the captain and pay 3.2 to 20 times your stake for six of a kind. A radar screen represents the bonus scatter symbols, present on reels 1 to 5 only. Landing three will trigger the Silent Hunter free spins and four radar bonus symbols will award the Wolf Pack free spins.

Medal symbols in red and blue activate xNudge Wild and xWays boosters on reels 2 to 5, plus a depth charge symbol acts as the trigger for the xBomb Wild Multiplier booster. Four wild symbols feature throughout the game and substitute for all symbols except for the radar bonus scatters.

Das xBoot Slot Features

Das xBoot is based on the 1973 novel by Lothar-Günther Buchheim, made famous by the film written and directed by Wolfgang Peterson. Nolimit City plucked an epic story for Das xBoot, which, at first glance, could be a classic in its own right. As with most of the studio’s recent creations, a combination of win-enhancing boosters grace the reels, so let’s dive below the surface into the murky waters of x-range mechanics.

Reels two to five have boosters activated by the landing of xWays and xNudge medal symbols along with the xBomb depth charge symbol. Each booster is clearly listed under each reel, along with the xBomb display in the top right and any win multipliers created are listed within. More than one win multiplier active on a spin will multiply any wins by the sum of all multipliers.

Nolimit City Das xBoot xBomb and xNudge wild boosters
xBomb Wild and xNudge Wild booster combination

xWays boosters feature on reels 2 and 5 only and will nudge into view to reveal a random regular symbol of a 2 or 3 symbol height. Should both reels trigger xWays symbols simultaneously, their symbols revealed will always match.

Reels three and four feature xNudge Wild boosters triggered by the medal symbol. When landing, they always nudge to complete four wild symbols to fill the reel. Each nudge will increase the win multiplier by x1 and all win multipliers in play add together before calculating pays.

At random across the reels, the depth charge symbol landing will trigger the xBomb Wild Multiplier booster. The xBomb will explode and remove all non-winning symbols except for the bonus scatters and other wilds whilst remaining on the reels as a wild symbol. The empty space is filled with new symbols falling in from above before calculating wins.

Nolimit City Das xBoot Silent Hunter Free Spins Periscope Wild

Land three radar scatters to trigger 8 Silent Hunter Spins. Reel three expands eight positions to create a 2x3x8x4x3x2 layout. The standard xNudge Wild is replaced by a Persicope Wild symbol on reel three. Should a win connect with a periscope wild, a torpedo launch sequence animation seeks to find a target and will randomly hit or miss a battleship.

If a target is struck, the periscope wild will expand up and nudge down to fill the reel from its starting position. Each nudge down will +1 to the win multiplier. If a target is missed, the periscope wild remains as a wild in play for that spin only. In addition, the Silent Hunter Spins have a Sticky Win Multiplier. Each ship hit, and any xBomb booster will each add an x1 persistent multiplier for the duration of the feature whenever occurring. Additional radar bonus symbols award two extra spins and all multipliers are totalled before calculating wins.

Nolimit City Wolf Pack Bonus Spins

The super bonus, Wolf Pack Spins, is triggered by landing four radar bonus symbols and starts with 8 free spins. A torpedo tube appears under reels 2 to 5 split into four sections, one for each reel. and uses Torpedo Wild symbols for the feature. When landing on reels 2 and 5 they drop to fill one of 4 tube sections beneath the reels and add a +1 to the xWays booster in the section. When landing on reels 3 and 4, they repeat the process to add +1 to the xWays Wild section beneath.

Filling all four sections of the tube will launch the torpedo and trigger the xWays and xWays Wild boosters to the number of symbols listed in its chamber. All tube sections upon the first launch will begin at +2, which means the xWays and xWays Wild boosters activate to a height of two symbols. Nine is the maximum symbol count that each booster can hold.

Wolf Pack Spins also feature the Sticky Win Multiplier which increases by 1 for each torpedo launch and any xBomb booster. Should both happen simultaneously, the sticky win multiplier increases by 1 during the wolf pack spins. All active multipliers on a spin are totalled before calculating pays and radar bonus symbols grant 2 extra spins upon landing.

Das xBoot comes with a Bonus Buy feature to take you straight into one of the free spins bonuses. Silent Hunter Spins cost 75x bet with a maximum stake of 100 credits and the Wolf Pack Spins are 350x bet at a maximum of 25 credits.

Final Verdict

Though Lothar-Günther Buchheim criticised Wolfgang Peterson’s interpretation, both could not fail to be impressed by Nolimit City’s video slot interpretation of the atmospheric silences and waiting at sea, disrupted by quick bursts of action, typical of cloak-and-dagger naval operations. The slot has a natural lean towards the idea with its Extreme volatility and is possibly the reason it works so well – a low volatile slot could not create the same effect so easily.

The action is clearly detailed and much simpler to follow than the recent release Mental, a very different theme, demonstrating just how well Nolimit City dive into the feel and mood of their chosen subjects to forge mechanics and tempo to suit. Creatively, Das xBoot is a triumph, but expect a session to feel much like long periods at sea, laying in wait for an opportunity of victory.

Das xBoot – Frequently Asked Questions (FAQ)

1. How many different types of wild symbols are there in Das xBoot from Nolimit City?
2. Will Das xBoot from Nolmit City be designed in different payout versions for casinos to choose from?
3. What is a Wolf Pack of submarines?


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