Nitropolis 4

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Only the first and the second deposit made within 7 days after the activation of the bonus are taken into account with the offer. Max bonus amount for the first deposit is €300; for the second starting from €15 —€400, for the second starting from €50 — €700. 30x wagering requirements for free spins and 40x for bonuses. The maximum bet allowed when playing with bonus money is of $/C$/€5.

Rules and Gameplay

In Nitropolis 4, players enter a dystopian world ruled by quirky animals on a massive oil rig. The game operates on a 6-reel grid, with an initial 4096 ways to win, which can expand thanks to the game’s features. Wins require landing 3 to 6 matching symbols on adjacent reels, starting from the leftmost. The Avalanche mechanic removes winning symbols, allowing new ones to drop and potentially create more wins, while also adding an extra row up to a maximum of 8. Gameplay is enhanced by Nitro Reels, Nitro Multipliers, and a variety of modifiers, making for an action-packed experience.

Bonus Features

Nitropolis 4 is rich in bonus features that significantly increase winning potential:

  • Avalanche Feature: Winning symbols are removed, and new ones fill the gaps, with an extra row added to the grid for more wins.
  • Nitro Reels: Occupies two positions and contains up to 12 matching symbols for increased wins.
  • Nitro Multipliers: Boost wins with multipliers up to x12, multiplying together if more than one lands.
  • Big Symbols: Super and Mega symbols up to 3×3 in size can land on any spin.
  • Nitro Modifiers: Eight possible modifiers, including Redrop, Both Ways, and Nitro Match, enhance gameplay.
  • Bonus Round: Triggered by 3+ scatters, offering free spins with sticky Nitro Reels and expanding rows.
  • X-iter Feature Buy: Offers options to buy into various bonus features directly, depending on jurisdiction.


The game features a mix of low, medium, and high-value symbols:

  • Low-value symbols: Card ranks J to A.
  • Medium-value symbols: Four gang logos.
  • High-value symbols: Four character symbols, with the Doberman roughneck as the top-tier symbol.
  • Special symbols: The spiky mine Wild symbol substitutes for pay symbols, and Bonus symbols trigger the bonus round.


Symbol 6x 5x 4x 3x
Top Character Symbol x3 x1.25 x1 x0.75
Medium Logo x1 x0.5 x0.3 x0.2
Low-value Card Rank x0.3 x0.2 x0.15 x0.1


Nitropolis 4 initially offers 4096 ways to win, which can increase as the game grid expands with the Avalanche and Nitro features. The dynamic reel set allows for a flexible and engaging gameplay experience, as players can unlock more ways to win through each spin and feature activation.

Pros & Cons

Pros Cons
Expansive gameplay with Avalanche feature and expanding rows Lower RTP at 94%
High maximum win potential of up to 50,000x stake High volatility may not suit all players
Rich in features with Nitro Reels, Multipliers, and various modifiers Limited accessibility in some jurisdictions due to feature buy restrictions

Minimum and Maximum Bet

The betting range in Nitropolis 4 caters to a wide variety of players, starting from a minimum bet of $0.20 to a maximum of $100 per spin. This flexibility allows both casual players and high rollers to enjoy the game at a level of risk that suits their preferences.

Game Jackpot

The jackpot in Nitropolis 4 reaches up to 50,000 times the player’s stake, presenting a substantial winning potential. The game operates with a Return to Player (RTP) rate of 94% and is classified as having a high variance. This combination suggests that while wins may be less frequent, they have the potential to be significantly large, especially with the game’s jackpot as the ultimate prize.

About Provider

ELK Studios, the provider of Nitropolis 4 is renowned for its innovative approach to slot game development. With a focus on quality over quantity, ELK Studios consistently releases visually stunning games that are rich in features and gameplay depth. Known for their unique game mechanics and engaging narratives, ELK Studios has established itself as a leading developer in the online casino industry, appealing to players seeking a premium gaming experience.

How To Play

  1. Start by setting your bet size, with options ranging from $0.20 to $100 per spin.
  2. Spin the reels by pressing the spin button located at the bottom right corner of the game screen.
  3. Winning combinations are made by landing 3 to 6 matching symbols on adjacent reels from left to right.
  4. Take advantage of the Avalanche feature, where winning symbols are removed and replaced by new ones, potentially creating additional wins.
  5. Look out for Nitro Reels and Nitro Multipliers, which can significantly increase your winning potential.
  6. Trigger the bonus round with 3 or more scatter symbols for free spins with sticky Nitro Reels.
  7. Explore the X-iter feature buy options (if available in your jurisdiction) to directly access various game features.
  8. Adjust your strategy based on the game’s performance and your balance.


Nitropolis 4 by ELK Studios stands as a testament to the developer’s ability to craft engaging and visually appealing slot games that are rich in features and winning potential. Despite its slightly lower RTP and high volatility, the game offers an immersive dystopian world filled with quirky animals, expansive gameplay mechanics, and the chance to win big. With its flexible betting range and a jackpot of up to 50,000x the stake, Nitropolis 4 is a thrilling addition to the Nitropolis series that will appeal to both new and experienced players alike.