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Nitropolis 4 Slot Game

Nitropolis 4 Cover Image

Nitropolis 4 Introduction

Welcome to Nitropolis 4 the newest instalment of the Nitropolis franchise. Nitropolis 4 is an online slot game developed by ELK Studios that continues with the dystopian theme of this series. Nitropolis 4 features a 6x4 expanding reel with an avalanche feature and much, much more. If you would like to learn more about this slot game, then read on with our Lottomart game review.

Nitropolis 4 Game Details

RTP (Return to Player):
Min / Max Bet:
£0.20 / £5.00
Hit Rate:
1 in 5.6
Auto Play:
Diamonds per £:
Min. 500
Features Cascading Reels, Double Symbols, Expanding Reels, Free Spins, Jumbo Symbols, Jumbo Wilds, Multipliers, Remove Symbols, Replicating Symbols, Respins, Scatter Symbols, Special Symbols, Symbol Locks, Symbol Upgrades, Transforming Wilds, Ways-to-Win, Wilds, Win Both Ways, Cascading Reels, Double Symbols, Expanding Reels, Free Spins, Jumbo Symbols, Jumbo Wilds, Multipliers, Remove Symbols, Replicating Symbols, Respins, Scatter Symbols, Special Symbols, Symbol Locks, Symbol Upgrades, Transforming Wilds, Ways-to-Win, Wilds, Win Both Ways

Nitropolis 4 Game Background

Nitropolis 4 (like the other Nitropolis games which came before) is the brainchild of ELK Studios, a Swedish-based slot developer founded in 2012. The quality of ELK Studios games is clear to see in titles such as the Valhall Gold slot and Katmandu X slot.

Nitropolis 4 Game Design

This 6x4 reel is in the dystopian world of Nitropolis, where animals have taken control of everything and crime is rampant. This iteration of Nitropolis is in an oil rig. We can see heavy machinery in the background while the player is in a control room with a mug that reads "Eat, Sleep, Drill, Repeat". The play grid itself continues this mechanical theme, and the newest symbol added to the game is a mouse in a hard hat.

Nitropolis 4 Mobile

Many players will be pleased to hear that like with most online UK slot games Nitropolis 4 is compatible with a range of mobile devices. This is thanks to the HTML5 software ELK Studios have implemented into many of their games. This software allows players with an internet connection to play Nitropolis 4 on multiple devices, including smartphones, tablets, PCs and laptops.

Nitropolis 4 Slot Symbols

Lower Value Symbols

  • J
  • Q
  • K
  • A

Medium Value Symbols

  • Rogue Rats Symbol
  • Pug Thugs Symbol
  • Gritty Kitty Symbol
  • Dirty Dawgs Symbols

High Value Symbols

  • Hard Hat Rat
  • Scuba Diver Pug
  • Gritty Kitty
  • Dirty Dawg

Nitropolis 4 Bonus Features

Nitropolis 4 is full of bonus features. There are, of course, wilds which substitute for base game symbols in play, big symbols which can be the size of 2x2 or 3x3 and an avalanche feature which allows new symbols to fall into place of symbol combinations. Then there are nitro multipliers, which add multipliers to all symbols involved in a combination, and nitro reels, which contain multiple symbols in one.

Nitropolis 4 also has a unique feature known as a nitro booster. There are 8 in total that add bonuses to the main reels. These include:

  • Re-drops = All bonus symbols remain, and the reel is respun
  • Both Ways = Combinations occur from both right to left and left to right
  • Max Rows = Expands the game up to the maximum of 8 rows
  • Nitro Wild = An existing nitro reel gets filled with Wild symbols
  • Garbage Collect = All instances of a randomly selected symbol get removed, and new symbols drop down
  • NItro Upgrade = An existing nitro reel gets upgraded, and additional symbols get added
  • Nitro Appear = A nitro reel of any size is placed and replaces existing symbols
  • Nitro Match = An existing nitro reel is matched with a symbol on the reel
Nitropolis 4 Free Spins

If you can land 3+ bonus symbols, you will receive free spins. If you land 3, you will get 8 free spins. If you land 4 or 5, you will receive 12, and if you land 6, you will receive 20 free spins. During this bonus round, the gameplay is the same; however, nitro reels are sticky. Furthermore, if you land a super bonus symbol in the bonus symbol combination, you will get the maximum number of rows, and paylines will work both ways.

Nitropolis 4 Slot Summary

Nitropolis 4 is a terrific slot jam-packed with bonus features for you to enjoy. The graphics and overall experience are improved from past titles, making this game another hit for ELK Studios. Some other high-quality slot games that players may enjoy include the Rainbow Riches slot and Atlantis Rising.

Other Slots by ELK Studios

ELK Studios has a whole library of quality games that you can check out.

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Safer Gaming

This is a real money gambling site. Please keep your play safe and fun at all times and only bet what you can afford.

Play Nitropolis 4 at Lottomart Games

Spin the mechanical reels in this dystopian land with Nitropolis 4. If you are a new Lottomart UK customer, you can access our generous welcome bonus, which will grant you some extra gaming funds. New customers can get a 100% deposit match bonus up to £100! 18+, terms apply. If you join and deposit £100, we will give you another £100 in bonus funds to play around with!

£10 min deposit. £100 max match. 50x wagering. Game eligibility & contributions vary. 10p to £5 bet range. £500 max redemption. New players only. Limited time offer. Valid 7 days. Terms apply.

View full 100% Games Welcome Match Deposit Offer Terms and Conditions →


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