Going Underground

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Going Underground Free Demo Play

Anyone booking a city trip to London will almost certainly use “The London Underground”.

“The London Underground” has served as the inspiration for Pragmatic Play’s Down The Rails slot. Will you navigate your way to winning in the underground, or will your money disappear in the endless tunnels? Our editors tried it out for you.

The Best Online Casinos & Bonuses to Play Going Underground for Real Money

Going Underground - Slot Review

Volatility, RTP & Betting

Down The Rails is played on a 5-reel playing field, each consisting of 3 symbols. The minimum bet is $0.20 and the maximum bet is $125 per spin.

We found the wide betting options to be very pleasant. Even more pleasant is the payout percentage, which is set at 96.51%. This is, of course, a more than fine percentage.

Furthermore, it is important to know that Down The Rails has a high variance and that you can win up to 5,000 times your stake.

Going Underground bonus

You can land 1 out of 5 free spins options.


The number 5 plays an important role in Down The Rails. This is because the playing field consists of 5 reels. In addition, in the base game there are 5 modifiers that can help you form valuable winning combinations. On top of that, there are 5 different free spins features included in the game.

Going Underground vs. 3 of the newest Pragmatic Play releases

Slot nameReleaseRTPMax. winFree Spins
Going UndergroundAugust 202296.51%5,000xYes, 5 types
Greedy WolfAugust 202296.48%3,000xYes
Black BullAugust 202296.51%4,500xYes
Bomb BonanzaJune 202296.45%2,000xYes + 5 levels

5 modifiers

There are 5 modifiers present in the base game, which can be activated at any time. These are the following 5 modifiers:

  • Tunnel Vision: mystery symbols are added to the playing field. All these mystery symbols change into an identical pay symbol.
  • The Big Smoke: a 3×3 pay symbol or bonus symbol is added.
  • Wild Strike: several wild symbols are added to the playing field.
  • Shifting Stack: special shifting stack wilds are added to the playing field. Each of these wilds also has a x2 or x3 multiplier attached to it.
  • Bonus Blitz: rewards you with 1 of the free spin features.

Down The Rails free spins

As you know by now, Down The Rails has no less than 5 different free spins features.

Before you can play 1 of those free spins features, you have to activate it of course. You can do so by spinning 3 or more scatters in the basic game. You will then receive 1 of the 5 free spins features.

So whoever activates the free spins feature will be assigned 1 of these 5 versions. If you are not satisfied with your version, you can play a special gamble feature.

Remember that if you lose the gamble feature, you also lose the opportunity to play the free spins feature.

The 5 versions of the free spins feature:

  • Pentonville: you receive 5 free spins. Winning combinations are framed, after which the remaining symbols spin again. The respins end when you don’t spin any symbols that can expand the cluster. Respins are “free” and do not decrease the number of free spins.
  • King Cross: you receive 5 free spins. Positions on the middle reels are marked with a cross. If you manage to spin a wild on such a marked position, then the symbols on all other marked positions turn into wilds as well.
  • Buckingham Palace: You receive 8 free spins. A stacked wild symbol is added to the playing field. This wild is as big as a full reel. However, the wild may not land completely on the reel and thus part of it may be invisible. It then pushes away symbols on the reel until the wild is fully visible and the wild covers the total size of the reel.
  • Canary Wharf: You receive 8 free spins. The collectible symbol makes its appearance in this version of the free spins feature. At the same time, you will see that character symbols land with a multiplier. This multiplier is a minimum of 1 time and a maximum of 50 times your bet. To collect these bet multipliers, you will also need to spin a collectible symbol on the reels during the same spin.
  • End of the Line: You receive 3 respins and start with an empty playing field. You can reset the number of free spins to the initial number of 3 by spinning at least 1 character symbol on the playing field. You will want to spin as many money symbols as possible during this version of the free spins feature. This is because they land with a value of at least 1 and up to 2,500 times the bet. Once a money symbol lands, it is locked in place for the remainder of the feature. The values of money symbols are only collected if you manage to spin a special collectible symbol. These collectible symbols have an additional power if you manage to collect 3 of them.

PROs & CONs of Going Underground


  • Beautiful design that fits well with the original theme
  • 5 different free spins features
  • An RTP of 96.51%


  • Max. win could’ve been bigger

There are 4 different collectible symbols:

  • Extra Life: Collect 3 extra life symbols to earn an extra life. This extra life can be used when the number of respins has reached 0. Instead of the feature being over, the number of respins is reset once
  • Prize Boost: Collect 3 prize boost symbols to increase the values of all money symbols on the screen.
  • Expand: Collect 3 expand symbols to add an extra row of symbols to the playing field. Up to 5 rows can be added in this way.
  • Multiplier: collect 3 multiplier symbols to increase the multiplier. This can be increased 3 times.

FAQs about Going Underground

Going Underground features more than many special modifiers and bonuses. These include 5 types of free spins as well as boosters.

The Going Underground slot was released in the end of August 2022 and is already available in all Pragmatic Play slots.

Paylines: 20
Grid: 5×3
Betting options: 0.20-125
RTP: 96.5%
Volatility: High
Max. win: 5,000x

Yes, the slot is available on both mobile and desktop devices for free!

Software Pragmatic Play
Slot Types Video Slots
Reels 5x3
Paylines 20
Slot Game Features Colossal Symbol, Free Spins, Gamble Feature, Game Modifiers, Multipliers, Scatters, Wild Symbol
Min. Bet 0.20
Max. Bet 125
Slot Themes Retro
Slot RTP 96.5%
devices Mobile versionTablet versionDesktop version
Going Underground Slot by Pragmatic Play

Game Winnings and Payouts

Going Underground Man with Beard Symbol

x5 = $50.00

x4 = $10.00

x3 = $4.00

Going Underground Angry Man Symbol

x5 = $25.00

x4 = $8.00

x3 = $2.00

Going Underground Mustache Man Symbol

x5 = $25.00

x4 = $8.00

x3 = $2.00

Going Underground Women Symbol

x5 = $20.00

x4 = $6.00

x3 = $1.00

Going Underground Long Hair Women Symbol

x5 = $20.00

x4 = $6.00

x3 = $1.00

Going Underground Ace Symbol

x5 = $10.00

x4 = $4.00

x3 = $0.80

Going Underground King Symbol

x5 = $8.00

x4 = $2.00

x3 = $0.60

Going Underground Queen Symbol

x5 = $6.00

x4 = $1.00

x3 = $0.40

Going Underground Jack Symbol

x5 = $5.00

x4 = $1.00

x3 = $0.40


About the author

Kate Ko

Kate Ko / Games editor

last updated

Kate joined CorrectCasinos' game team in the late 2021. She's here to find and review all new and upcoming slots titles, so you can just enjoy their free play.

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