Nitropolis 4

Nitropolis 4

4.6/5 - (15 votes)
What’s to Like:
  • Engaging theme
  • Avalanche mechanic
  • Bonus features
  • Mobile friendly
  • Fixed paylines
  • No jackpot
Play Nitropolis 4 demo
Nitropolis 4 demo PLAY DEMO
Slot Info
Title: Nitropolis 4
Provider: ELK Studios
Game Type: Free Slots
Volatility: High
RTP: 94%
Min Bet / Max Bet: 0.20 - 50
Max Win: 50,000x
Paylines: 4,095
Reels: 6
Rows: 4
Autoplay: Yes
Progressive jackpot: No
Free Spins: Yes
Features: Avalanche Feature, Multiplier, Wild
Themes: Animal
Released: February 2023
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How We Rate
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4.0 rating
On your first deposit, you have the right to claim a welcome bonus up to €500!
T&Cs Apply
- Only new players who have not made any deposits before are eligible for this welcome offer.
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- A required first deposit of at least 10 EUR/USD/CAD/NZD has to be made in order to claim the welcome bonus.
- Maximum bonus amount that can be claimed with this offer is 500 EUR/USD/CAD/NZD.
- Depending on which of three bonuses the player claims, bonus and deposit must be wagered 30 (thirty), 40 (forty), or 50 (fifty) times in any BONUS GAME slot before the funds can be withdrawn. Players can use our advanced game finder to filter out bonus games.
- Until the play-through requirements of the bonus have been met, the maximum bet that can be placed is 5 EUR/USD/CAD/NZD, except for players from Germany who's maximum bet is limited at 1 EUR. This includes double-up wagers after the game round has been completed, for example, wagering winnings from X game round on red/black, and also in-game bonus features that can be purchased. Games may block your attempt to make a higher bet in them.
- Bonus funds and free spins will be valid for 30 (thirty) days from the moment they are credited into the player's account.
- Payout resulting from completing requirements of the welcome bonus offer will be limited to the maximum value of 10 (ten) times the amount of the 1st deposit. For example, if you claim this bonus offer by depositing 50 €, your maximum payout from this bonus offer will be limited to 500 €. Any winnings exceeding the limit will be forfeited. For the players' convenience, the adjustment of the balance to these limits, if necessary, will be done automatically by the system when the payout is made.
- We reserve the right to stop providing or amend the rules of the welcome offer at any time, for example, for technical or regulatory reasons or for the reasonable prevention of fraud or to withdraw a particular reward at any time.
- General Bonus Terms and Terms of Use apply.
4.0 rating
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4.0 rating
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5.0 rating
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- New customers only
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4.5 rating
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4.5 rating
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Nitropolis 4 slot machine review

Nitropolis 4 slot is the latest addition to the Nitropolis series of slot machines, released by ELK Studios in 2023. The new game offers players an exciting adventure in a post-apocalyptic city inhabited by unusual animals and features innovative gameplay.

Theme and Graphics

Nitropolis 4 free spins

The theme of the slot machine Nitropolis 4 — a post-apocalyptic world inhabited by anthropomorphic animals. When players start the slot, they are greeted by a fascinating intro video, setting the atmosphere of the upcoming game. The symbols on the reels are also designed in an apocalyptic style. High-quality graphics and game design immerse the player in an apocalyptic cityscape with collapsing buildings. The sound accompaniment perfectly matches the game’s theme and enhances the overall atmosphere.

Technical Characteristics

Minimum bet$0.20
Maximum bet$50
Maximum payoutx50,000

How to Play

Nitropolis 4 slot machine has simple and intuitive controls. Players can easily adjust their bets within the stipulated range by clicking on the coin icon in the lower left corner of the screen. The autoplay function makes the gameplay more convenient, allowing you to set from 10 to 100 automatic spins. For a quick look at the payouts and bonus features, the “☰” button gives access to the pay table. In addition, the “gear” icon opens the game settings, where you can turn off the game sound and enable the fast play mode.


Nitropolis 4 introduces players to the thrilling Avalanche mechanic, which triggers after each win. When a winning combination occurs, the symbols responsible are removed from the reels, making way for new ones. This cascading effect adds an extra row to the playing field, opening up additional ways to win. With this mechanic, the playing field can expand to 8 rows, creating even more opportunities for winning combinations. In addition to the Avalanche feature, Nitropolis 4 offers a plethora of bonus features, including:

  • Big Symbols — 2×2 and 3×3 mega symbols can appear on the playing field.
  • Bonus & Super Bonus — Three or more bonus symbols trigger a bonus game with free spins. During the free spins, all Nitro reels are sticky. Combining bonus and super bonus symbols triggers the super bonus game, unlocking all eight rows.
  • Nitro Multiplier — Nitro Multipliers multiply any winnings, and multiple Nitro Multipliers multiply each other.
  • Nitro Booster — There are two screens on the reels that display Max Rows, Garbage Collect, Nitro Reel, Nitro Wild, Nitro Upgrade, Nitro Match, Redrop and Both Ways modifiers. They appear randomly as the rows expand.
  • X-iter™ — Allows players to get into the game using five different game modes, from a 2x bet with more than twice the chance of a bonus to a Super Bonus with 500x the bet with the maximum number of rows and both ways activated.

Prize Combinations and Payouts

To score wins in Nitropolis 4, need to land 3 to 6 identical symbols consecutively starting from the leftmost reel. When this happens, the symbols involved in the winning combination are removed from the reels, allowing new symbols to fall into place. This dynamic gameplay keeps the action fast-paced and engaging. According to the paytable, prize combinations when playing for the maximum bet of $50 are paid as follows.

Symbol3 on line4 on line5 on line6 on line
Dirty Dawgs and Gritty Kitty$10$15$25$50
Pug Thugs and Rogue Rats$7.5$12.5$20$40
A, K, Q, J$5$7.5$10$15

Free Demo Version

For players looking to explore Nitropolis 4 without committing real money, a free demo version offers the same high-quality graphics, immersive sound, and engaging gameplay as the real-money version. The only difference is that the demo mode requires no cash investment, and winnings aren’t withdrawable. Nevertheless, it allows players to understand the game’s mechanics, experiment with different strategies and understand the rules without registration and financial risks.


To summarize, Nitropolis 4 from ELK Studios is an unusual slot machine that combines an exciting visual design and addictive gameplay. The game is designed around a post-apocalyptic world theme and is distinguished by its high volatility, offering numerous bonus features tailored to appeal to both casual and experienced players. With its impressive potential for huge payouts, the game takes players on an exciting adventure through Nitropolis.

Is Nitropolis 4 available for mobile devices?

Yes, Nitropolis 4 slot machine is adapted for mobile devices, so gamblers can enjoy the game on smartphones and tablets.

Does Nitropolis 4 feature progressive jackpots?

No, Nitropolis 4 does not include progressive jackpots. Instead, it offers substantial fixed payouts and a variety of exciting bonus features.

What is the X-iter™ mode, and how does it work?

X-iter™ mode is a feature in Nitropolis 4 slot that allows you to choose from five game modes, each with different risk levels and payouts. These modes are activated for an additional fee, offering faster access to bonuses and higher potential payouts.

Can I play Nitropolis 4 for free?

Yes, a free demo version of Nitropolis 4 is available, allowing players to experience the game without any financial risk. The demo version offers the same gameplay as the real-money version but doesn’t provide actual winnings.
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