SIGN UP AND
GET 50 SJ POINTS!
mobile banner
2
Welcome Offer: max. 150% up to $1,600 + 400 FS
Get Bonus
Welcome bonus: max. 200% up to €8,000 + 400 FS
Get Bonus

Nitropolis 4 Slot - Review, Free & Demo Play

Nitropolis 4
Nitropolis 4
Play for real
Be gamble aware 18+ SlotsJudge
claps-120x120s
Claps
Review
170% up to 1,000 USDT + 35 Free Spins
Play at the casino
Be gamble aware 18+ SlotsJudge

No Games Found

No Games Found

No Games Found

claps-120x120s
Claps
Review
170% up to 1,000 USDT + 35 Free Spins
Play at the casino
Be gamble aware 18+ SlotsJudge
Write a review
Updated: 22.07.2025
Reviewed by: Ella Houghton

ELK Studios comes back with the sequel of the popular Nitropolis slot. The 4th edition is available at online casinos since 23/02/2023 to offer players exciting gameplay, great audio and visuals, and an array of bonuses including Multipliers, Nitro Boosters, Nitro Reels, Avalanches, Mega Symbols, and 2 bonus games.

In this review, we will give you all the info we have about the game’s metrics, winning potential, and bonuses. As a plus, we will provide you with a list of the best online platforms where you can play Nitropolis 4, and offer to try out its free demo.

Claps casino welcome offer
Best Casino Bonus for Real Money on this Slot
Welcome bonus: max. 170% up to 3,000 USDT + 165 FS
Get bonus & play this slot

18+ | New players only | Terms Apply | Please play responsibly | gamblingtherapy.org

More Slots From ELK Studios

  • Avalon X
    9
    Avalon X
  • Mine Defender
    8.5
    Mine Defender
  • ZapLab
    8.5
    ZapLab
  • Nitropolis TV
    8
    Nitropolis TV
In this review
  1. Slot details
  2. Theme
  3. Bonus Rounds & Free Spins
  4. Summary
  5. Where to play
General information about Nitropolis 4 slot

General information about Nitropolis 4 slot

Rating by Ella Houghton:
8.5
ELK Studios
Write a review +25 SJ points
  • Release Date:
    23.02.2023
  • Volatility:
    High
  • RTP:
    96.1%
  • Multiplier:
    Yes
  • Max. win:
    50,000x
  • Bonus game:
    No
  • Free spins:
    Yes
  • Scatter Symbol:
    Yes
  • Wild symbol:
    Yes
  • Symbol Stacked:
    No
  • Jackpot Game:
    No
  • Slot lines:
    4,096
  • Slot reels:
    6
  • Layout:
    6-8
  • Stakes range (€/£/$):
    0.2 to 50
  • Slot Theme:
    Apocalypse
  • Technology:
    JS, HTML5
More infoLess info

Licensed and tested by

  • Gambling Comission
  • MGA
  • ONJN

How to Play

You will need to take just a few steps to start playing the slot. Follow these tips:

  1. Launch the game
  2. Click on the triple-bar button to enter the menu
  3. Read the rules and review the paytable
  4. Click on Coins to adjust your wager
  5. Hit Spin

Nitropolis 4 is an online slot that has 6 reels, 4 rows, and 4,096 ways to win. The game features the Avalanche mechanic and pays left to right starting from reel 1, but when the Both Ways feature is activated, wins also form from right to left, starting from reel 6. You can bet €0.2 and €50 per spin and have an opportunity to win up to a whopping 50,000x your stake. The bonus features include Mega Symbols, Multipliers, Expanding Reels, Free Spins, and Super Bonus Game.

The Auto button is located in the upper-right corner, and it allows you to turn on the automatic mode where reels will spin on their own.

Nitropolis 4 RTP and Volatility

6 
This is a high-volatility game with an RTP of 96.10%.
Nitropolis 4 comes with a high variance level and a miserably low RTP rate. Return-to-player percentage for this slot is set at 94% which is much lower compared to the other games in this genre that usually come with an average of 96%. The game is highly volatile, meaning that wins will not come around frequently, so players need to have patience and a decent bankroll to get the most out of this slot.

Theme

9 

Nitropolis series has a fun dystopian theme and the game takes place in an imaginary universe where animals rule the planet. In Nitropolis 4 the animal crew is at work, specifically doing resource extraction at sea. Presumably, they’re dredging up Nitro which has a key importance when it comes to the game’s bonus features. The industrial soundtrack and all kinds of sound effects are of top quality and add extra excitement to the gameplay.

Speaking of the paytable, there are low-paying J-A card symbols, four gang logos as the medium symbols, and four animal characters representing the high-paying symbols tier. Landing a 6-of-a-kind winning combination awards 0.3x for the card royals, 0.8x to 1x the bet for the gang logos, or 1.25x to 3x the bet for premiums. The mine is the Wild symbol that appears on all reels and substitutes for any regular symbol as well as offers the same payout as the highest-paying paytable symbol.

Also, there are Bonus and Super Bonus symbols that activate bonus games.

Theme
Nitropolis 4 slot paytable

Mobile Compatibility

Nitropolis 4 slot mobile
The new Nitropolis 4 slot is perfectly optimized for mobile gaming. Developed in HTML5, it is accessible and playable on all devices. The game is fully compatible with both web browsers and mobile, allowing players to spin the reels on the go.

About ELK Studios

ELK Studios is a leading slot provider founded in 2012. It provides innovative and exciting slots for online and mobile gamers. The provider also specializes in HTML5 mobile-optimized slots that guarantee seamless play across multiple platforms.

ELK Studios slots are highly regarded for their advanced features, special bonuses, and randomized sequences. Their games feature some of the best animation, graphics, and sound effects out there, making the experience even more realistic. Some of the popular slots from Elk Studios include Wild Seas, Robin Hood – Shifting Riches, Platooners, Hong Kong Tower, Electric Sam, and so on.

Other slots from this provider:

Bonus Rounds & Free Spins

9 

Big Symbols

On any spin, 2x2 and 3x3 Mega Symbols may appear on the playing grid.

Nitro Reels

Nitro Reels occupy two positions on the playing grid and can land on any reel. These positions contain 4 to 12 standard-size symbols. Big Nitro Reels cover six positions and are filled with 2, 3, 4, 5, or 6 large 2x2 symbols.

Nitro Multiplier

Nitro Multipliers also occupy two positions on the playing board and can contain multiplier values from 4x to 12x that will be applied to your winnings.

Nitro Booster

You will notice two screens located above the grid. These screens display modifiers that will improve the gameplay. There are eight possible modifiers and they’re awarded at random.
Nitropolis 4 slot Nitro Booster

Bonus Game

Landing 3, 4, 5, or 6 regular Bonus symbols will grant 8, 12, 16, or 20 free spins. During the free spins round, Nitro Reels are Sticky. Also, each win increases the safety level by one row, and the next spin fills the grid to the current safety level, with a maximum of 8 rows. If one of the triggering symbols is a Super Bonus symbol, then you’ll be awarded the Super Bonus Game. In this feature, Max Rows and Both Ways are always active.

Nitropolis 4 Demo Play

The free demo version of Nitropolis 4 slot is available on our page, no deposit is required. You can test and evaluate the slot without any risk and enjoy the game with plenty of free credits for wagering. The demo replicates the full version of the slot machine, allowing you to get a feel for the game without the risk of losing real money. It’s an ideal way for new players to try out an unfamiliar game or for experienced players to practice a new strategy.

Max Win

10 
The maximum possible win is 50,000x your stake.
Nitropolis 4 comes with an incredible winning potential of 50,000x the bet. In this game, there are plenty of bonuses that may help you boost your winnings. Don’t forget that you can always get the maximum from bonus features if you really try.

Nitropolis 4 Video Review

--- None ---

Overall Rating

8.5

Nitropolis 4 is an awesome slot that offers engaging gameplay and multiple generous bonuses. ELK Studios did a great job designing this title, and all the fans of the previous installments of the Nitropolis series won’t be upset with part 4. This game can be extremely profitable as the maximum possible win is a 50,000x bet.

However, it’s a high-volatility slot, and a tiny bankroll may disappear before any significant win will be obtained.

Hits
Great theme
Superb selection of bonuses
Max win of 50,000x
Free Spins
Misses
Below the average RTP of 96.10%

Nitropolis 4 Slot - FAQ

What is the maximum possible win in Nitropolis 4?

The top possible win is 50,000x the bet.

What is the RTP rate of Nitropolis 4?

The game has an RTP of 96.10%.

Can play Nitropolis 4 on a PC?

Yes, this game is playable on both mobile and desktop/laptop devices.

Similar slots

  • Werewolf - The Hunt
    8.6
    Werewolf - The Hunt
  • Project Space
    7.1
    Project Space
  • Fortune Llama
    8.5
    Fortune Llama
  • Sword of Fortune
    8.1
    Sword of Fortune
  • Wheels of Flame
    7.3
    Wheels of Flame
  • Astro Jewels
    7
    Astro Jewels
  • Blood Suckers Megaways
    9.5
    Blood Suckers Megaways
  • Buffalo Dale Grandways
    7.7
    Buffalo Dale Grandways
Ella Houghton
Ella Houghton
Expert in: News, Blog, Slot reviews, Payments
Ella is a professional content-writer with 8 years of experience in the casino sphere. She has broad knowledge of gambling related themes and is happy to share this with Slotsjudge.

2128 articles

Reviewed by Editor-in-Chief
Nikita Lukanenoks
Rate this article and leave a comment

Overall rating

Based on 0 reviews

0/10
wheel
Your free spin awaits!