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Das xBoot Slot Review and Playtest (NoLimit City)

Das xBoot Slot Logo

Up Periscope! As We Go on the Hunt for WWII Lost Gold in the Das xBoot Slot From NoLimit City!

Hot on the heels or whatever other body parts were leftover from the chilling Mental slot from NoLimit City slot comes a brand new World War 2 submarine themed big-hitting slot titled Das xBoot.

With an obvious nod to the classic movie Das Boot, NoLimit has managed to squeeze in an "x" into the title, which fits nicely with the unique slot features such as xNudge Wilds, xWays xBomb Wild Multiplier, which are all present on this particular release.

Das xBoot Slot Theme

The setting for this slot takes place in the harsh seas of a WWII era, in search of gold from a much sought after submarine target.

Perishing in the harsh sea’s depths lies the lost WWII gold, hidden in a longed after submarine. The fight for gold is at an all-time high, where the hunters can become the prey very easily. Chaos erupts as your u-boat is in danger of suffering grief damages. Will you be able to evade the enemy’s ferocious attacks and bring back the gold? Or will you suffer the nature of the cruel war at sea?

Base Gameplay

The base game in Das xBoot takes place on an unusually set up 6-reel layout that fits in nicely with the shape of the submarine that houses these reels. The default 2-3-4-4-3-2 row set-up provides 576-way paylines on this slot.

With added functionality from base game features, the reels can transform into a 2-3-8-4-3-2 row setup or a 2-4-5-5-4-2 row video slot in the bonus modes. A periscope extends from the middle reel, giving it that extra-large height, which again all makes sense given the setting!

With lots of extra functionality provided on specific reels (labelled underneath the reels) by the xNudge Wilds, xWays, xBomb Wild Multiplier features, this can actually expand to a maximum of 75,712 winning ways. Keep an eye on the small pressure gauge above the reels if you want to track how many winning ways are currently active on each spin!

As with any NoLimit slot, the max winning potential is off the charts (10/10 volatility rating) and is hard-capped at 55,200x. With 2 very unique free spins bonus features, there is a lot to discover on the semi-realistic cartoon-themed slot, with some fantastic base game hit potential mainly down to the xBomb feature and the other features all interacting together.

Want to check out Das xBoot straight away? Then head over to Rizk Casino who have the full catalogue of NoLimit City online slots on offer at their casino!

Terms Apply  - 18+, New Customers Only, Gamble Responsibly -

Gameplay and Bonus Features

Das xBoot Slot - Promotional Video

Das xBoot Slot - Desktop Gameplay

Das xBoot Slot - Mobile Gameplay

Das xBoot Slot - Technical Summary
Paylines576 ways up to 75,712 ways
Variance/Volatility Very High (10/10 Volatility)
Free SpinsYes
Re-Trigger Bonus RoundExtra Spins
Special Features

xNudge Wilds
xBomb Wild Multiplier
Silent Hunter Free Spins
Wolf Pack Free Spins
Max Win55,200x bet (~1 in 64M spins)
RTP (Return To Player)96.03% Default
94.04% DX1 Version
Min Bet0.25 EUR
Max Bet100 EUR
Hit Frequency~1 in 5 spins (22.07%)
Game ProviderNoLimit City
Release Date14/09/2021
Das xBoot Slot header

Das xBoot - Special Features, Symbols and Bonuses

Base Game

There are several small mini-features on offer in Das xBoot. These can also interact with each other to provide some great base game winning potential and give you a good hint of how the bonus rounds can play out also.

xNudge Wilds

The xNudge Wilds are 4-row high Wild symbols that always nudge into a fully visible position when landing on a reel. Every nudge that occurs will also increase the Wild multiplier with +1.


The x Ways are a special symbol that simply adds additional winning ways. When these land, they will always reveal 2-3 of the same symbol type. Landing several xWays symbols on various reels will add the same kind of symbol

xBomb Wild Multiplier

The xBomb symbols are probably the most interesting and potent feature of this machine. When they land in view, they blow away all the non-winning symbols from the reels and make room for new symbols to fall in, as well as acting as a Wild symbol.

An xBomb also increases the win multiplier by one before the next collapse occurs. If new xBombs tumble into view, this process can continue several times!

Free Spins Rounds

There are 2 different free spins bonus rounds on offer in Das xBoot, triggered by landing at least 3 scatters anywhere on the reels to trigger the Silent Hunter Free Spins, and a much rarer and volatile 4 scatter trigger awards the Wolf Pack Free Spins.

The Bonus symbol can land on reels 2-5 hence 4 scatters being the maximum trigger.

Das xBoot Scatter Symbol

Scatter Symbol

Silent Hunter Spins

Silent Hunter Free Spins

The Silent Hunter Spins are triggered by landing 3 scatter symbols anywhere on the reels in the base game and awards eight Silent Hunter Freee Spins.

During this bonus round reel, 3 (the periscope reel) grows to be 8 rows high in size, increasing the number of winning ways, not forgetting the extra features that can increase this further!

A torpedo launch sequence is initiated when winning symbols land on reels 1 and 2 with a Periscope Wild on reel 3.

Landing the Periscope Wild on reel 3 initiates a small fight cutscene. If you manage to sink the target ship, you are rewarded with a Periscope Wild that fills the third reel to the top and nudges down to the bottom, giving a win multiplier for each nudge downwards required to fill the reel (see gameplay screenshots above).

This increased win multiplier stays for the remainder of the feature, so if you get this feature early on or multiple times, prepare for a potentially excellent bonus feature.

The xBombs feature can also activate and awards a sticky win multiplier that lasts for the duration of the bonus feature, further raising the winning potential of this slot.

Additional Bonus symbols that land awards +2 free spins in this bonus mode.

Wolf Pack Spins

Wolfpack Free Spins

The Wolf Pack Free Spins is triggered by landing four scatter symbols anywhere on the reels and awards eight Wolf Pack Spins.

During this bonus round which is even more volatile, A torpedo tube appears under the reels 2-5. Torpedo Wilds substitute for any symbol except the Bonus symbols. Four torpedo parts need to be collected in total to trigger this feature fully.

The torpedo parts are now present on the middle reels and collected in the torpedo area below the reels during this bonus round. Once completed, the torpedo will launch, providing a wide range of special modifiers depending on how many of each type were collected. The range and variety of modifiers here make this feature unique, along with the set-up on the reels before it's due to launch, which can be vastly different if other xfeatures have also been present!

The symbols collected are a mixture of xWays and xWays Wild symbols that can give a maximum of an additional  9 torpedo xWays symbols per reel.

Das xBoot Torpedo

On Torpedo Launch, the following will occur.

  • Reels 2 and 5  xWays transform to a regular symbol and split equally to the number of collected xWays in that torpedo section.
  • Reels 3 + 4:  xWays transform to a wild symbol and are added to the reel equal to the number of xWays previously collected in the Torpedo section.

Each time a torpedo launches, a sticky win multiplier is added. It increases the win multiplier by 1x, but given the 8 starting spins, this occurring more than once in a bonus round is likely to be extremely rare!

Additional Bonus symbols that land during the bonus round awards +2 free spins in the Bonus round, although in testing, these seemed to be quite rare!

Wolfpack Free Spins - Torpedo Wilds

Maximum Win Cap

If you are an incredibly lucky player and manage to achieve the win cap you will be rewarded with a special animation Das Gold Des Roter Teufel
The Max payout of the game is set to 55,200x times the base bet. Trigger this epic win and the game round will end.

Das xBoot Slot Max Win
Das xBoot 13000x Win Replay

It didn't take players long to achieve huge wins on this machine (over 13000x on day one of release). You can replay their wins from inside the Das xBoot slot in these real money bonus rounds! (Link loads up the Nolimit City website to replay the game round).

As expected, most of these massive wins are from the Wolfpack Spins, but the Silent Hunter bonus round is also capable of big wins. Possibly after a day, these will be pushed completely off the leaderboards, though!

Update (15/06/21) - A Max Win has been achieved of 55,200x stake, which you can replay here.

Bonus Buy Options

In countries where still permitted, there is a bonus buy option allowing you to bypass the base gameplay and jump straight into either of the bonus features. The total cost to buy these are based on your current bet level multiplied by a specific value, as shown below.

  • Silent Hunter Spins cost 75x the current stake and has an RTP of 96.57%,
  • Wolf Pack Spins cost 350x the current stake and has an RTP  of 96.58%

Given the huge increase in the cost of the Wolf Pack spins, this should give you an idea of just how much more volatile and rewarding this feature is.


The paytable below is based on a €5 bet Size and shows the various wins for all of the high paying symbols on Das xBoot. These do not take into consideration any of the multipliers that are on offer during play.

Das xBoot Slot  - FAQ's

What is the Das xBoot Slot RTP?2021-09-14T14:09:34+01:00

The default theoretical average return to player (RTP) of the Das xBoot Slot is 96.03% in regular play which is about average.

There is a second version available to casinos listed as the DX1 version and this comes with a slightly lower RTP of 94.04%

What is the Das xBoot Slot Max Win?2021-09-14T14:07:13+01:00

The theoretical maximum win for the Das xBoot Slot is 55,200 x bet, This value is a maximum win cap and awards the Das Gold Des Roter Teufel win animation, and the game round ends. The simulated hit frequency of this win is listed as ~1 in 64M spins

Das xBoot Slot Review

Das xBoot Final Opinions

After the somewhat disturbing and very confusing Mental slot from NoLimit City, it’s a welcome breath of sea air that Das xBoot is somewhat simpler to understand in terms of the special features, not to say there isn’t some complexity still, this wouldn’t be a NoLimit slot without some clever and complex feature interaction from all of the different xFeatures!

But honestly, we preferred this slots gameplay, its quite apparent early on how the features work without having to study the paytable and how they can interact with each other. The base gameplay is much improved, mainly thanks to the xBomb feature and successive explosions creating huge anticipation and great hits.

The 2 free spins rounds are unique, and whilst both offer some great potential, the Periscope Wild in the Silent Hunter spins is a novel and relevant theme feature. Still, the 4 scatter Wolf Pack spins is definitely the bonus round to get instantly excited about, especially as you near completing the torpedo feature and unleash a huge amount of extra wilds and ways!

Volatility wise, it’s off the scale as we’ve come to expect. Our first playtest bonus round ended in less than a 1x win! But since this, we have had several rounds well over the 100x stake mark and checking through the innovative replay feature. There are already many real money bonuses that are well over 1000x stake wins on this machine.

If you are a fan of high variance slots, this is well worth checking out. The gameplay is simpler to understand than Mental. Whilst not quite as insane in terms of win potential, the 55,200x max win is still plenty!


User Review
5 (1 vote)

Terms Apply  - 18+, New Customers Only, Gamble Responsibly -

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2021-10-06T15:47:08+01:00September 14th, 2021|Categories: Online Slot News, Reviews, and Videos|Tags: , |

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