Your official site for Slingo games
Slingo

Nitropolis 3 vs Nitropolis and Nitropolis 2: How the Series Evolved

Nitropolis-3-vs-Nitropolis-and-Nitropolis-2-How-the-Series-Evolved
SC-UK Main Blog Post Banner

The Nitropolis series from ELK Studios has steadily expanded with each release, introducing new mechanics while keeping the signature Nitro Reels at the heart of the gameplay. From the original game's innovative reel system to the feature-rich experience of Nitropolis 3, each instalment builds upon the previous one rather than starting from scratch.

Players exploring modern online slots will notice that every game in the trilogy offers a familiar foundation, but each sequel introduces new ideas that make the gameplay feel distinct.

Available through Slingo, all three titles are games of chance where every spin is determined randomly.

Comparing the Three Games

Feature

Nitropolis

Nitropolis 2

Nitropolis 3

Theme

Post-apocalyptic city

Expanded cyberpunk city

Toxic beach wasteland

Nitro Reels

✔

✔ Enhanced

✔ Enhanced

Avalanche Wins

No

No

✔

Expanding Rows

No

No

✔

Nitro Booster

No

✔

No

Giant Symbols

No

Limited

✔

Both Ways Feature

No

✔

✔

Super Bonus

No

No

✔

Maximum Win Potential

10,000x

10,000x

50,000x

Nitropolis 3 retains the core identity of the series while introducing several entirely new mechanics that change how spins develop. 

Nitropolis: Where It All Began

Released as the first game in the series, Nitropolis introduced players to a vibrant post-apocalyptic world ruled by four rival animal gangs.

Its standout innovation was the Nitro Reel system.

Rather than displaying a single symbol, Nitro Reels contained multiple identical symbols inside one reel position, dramatically increasing the number of possible winning combinations.

The original game focused on:

  1. Nitro Reels
  2. Dynamic Ways to Win
  3. Animal gang characters
  4. Fast-paced gameplay
  5. High volatility

At the time, Nitro Reels were unlike anything seen in many traditional slot games and became the defining feature of the series. 

Nitropolis 2 Expanded the Formula

Instead of replacing Nitro Reels, Nitropolis 2 introduced new ways to interact with them.

The biggest addition was the Nitro Booster, which randomly activated special modifiers during gameplay.

These included features such as:

  1. Nitro Upgrade
  2. Nitro Match
  3. Nitro Wild
  4. Both Ways
  5. All Wild
  6. All Premium
  7. Respin
  8. All Match

These modifiers allowed Nitro Reels to evolve throughout a spin, making gameplay considerably more varied than the original title.

Nitropolis 2 also significantly increased the maximum number of potential Ways to Win while maintaining the same gritty city setting. 

Nitropolis 3 Introduced Cascading Gameplay

While the first two games focused primarily on Nitro Reel interactions, Nitropolis 3 shifted the gameplay by introducing Avalanche Wins.

Winning symbols now disappear after a successful combination, allowing new symbols to fall into place.

This change means a single spin can continue through multiple cascades before coming to an end.

Avalanche Wins became one of the defining differences between Nitropolis 3 and its predecessors. 

Expanding Rows Changed the Playing Area

Perhaps the biggest gameplay evolution in Nitropolis 3 is the addition of Expanding Rows.

The original games used fixed reel layouts.

Nitropolis 3 begins with four rows but adds an extra row after each successful Avalanche until the grid reaches eight rows.

This creates:

  1. Larger playing areas
  2. More Ways to Win
  3. Bigger Nitro Reel combinations
  4. More room for oversized symbols

The expanding grid gives Nitropolis 3 a very different rhythm compared with the earlier entries.

Giant Symbols Add Another Layer

Nitropolis and Nitropolis 2 focused mainly on standard-sized symbols and Nitro Reels.

Nitropolis 3 introduces Giant Symbols that can occupy multiple reel positions.

These oversized symbols:

  1. Cover larger areas of the grid
  2. Count as multiple matching symbols
  3. Combine with Nitro Reels
  4. Work during Avalanche sequences

They help make the third game feel visually busier while increasing the potential for complex symbol combinations.

A New Setting

The first two games take place in the streets of Nitropolis, featuring a futuristic city dominated by rival gangs.

Nitropolis 3 moves the action to a toxic coastal wasteland.

Although the gang leaders remain familiar, the change of scenery introduces:

  1. Beach-themed backgrounds
  2. Bright tropical colours
  3. New environmental animations
  4. A lighter comic-book atmosphere

The setting refreshes the series without losing its distinctive visual identity. 

Bonus Features Through the Series

Each game expands the available bonus mechanics.

Nitropolis

  1. Nitro Reels
  2. Free Spins

Nitropolis 2

  1. Nitro Booster
  2. Multiple Nitro modifiers
  3. Both Ways
  4. Enhanced Free Spins

Nitropolis 3

  1. Avalanche Wins
  2. Expanding Rows
  3. Giant Symbols
  4. Sticky Nitro Reels
  5. Super Bonus Round
  6. Enhanced Free Spins

Rather than replacing previous mechanics, each sequel introduces additional layers to the gameplay.

Which Game Feels Most Different?

Although all three games share the same foundation, Nitropolis 3 offers the biggest departure from the original formula.

The introduction of:

  1. Avalanche Wins
  2. Expanding Rows
  3. Giant Symbols
  4. Super Bonus
  5. Larger maximum win potential

creates a noticeably different gameplay experience while preserving the signature Nitro Reels. 

What Stayed the Same?

Despite the changes, several core elements remain consistent across the trilogy.

These include:

  1. Nitro Reels
  2. High volatility
  3. Comic-inspired artwork
  4. Animal gang characters
  5. Dynamic Ways to Win
  6. Fast-paced gameplay

These recurring mechanics help each instalment feel like part of the same series while still offering something new.

Which Version Should You Try?

Each game appeals to different types of players.

Game

Best For

Nitropolis

Players wanting the original Nitro Reel experience

Nitropolis 2

Those who enjoy random feature modifiers and evolving gameplay

Nitropolis 3

Players looking for cascading reels, expanding grids and the series' most feature-rich design

Whichever entry you choose, each title showcases a different stage in the evolution of ELK Studios' Nitro Reel concept.

Conclusion

From the original Nitropolis to Nitropolis 2 and finally Nitropolis 3, the series has evolved by adding new mechanics while preserving its unique identity. The original established Nitro Reels, the sequel expanded their possibilities with the Nitro Booster, and Nitropolis 3 introduced Avalanche Wins, Expanding Rows and the Super Bonus Round to create the most dynamic experience in the trilogy.

For fans of innovative online slots, the progression of the Nitropolis series demonstrates how gameplay can evolve through carefully layered mechanics while remaining true to its core design.

Frequently Asked Questions

What is the biggest difference between Nitropolis and Nitropolis 3?

Nitropolis 3 introduces Avalanche Wins, Expanding Rows and Giant Symbols, creating a more dynamic gameplay experience than the original game.

Does Nitropolis 2 still use Nitro Reels?

Yes. Nitro Reels remain central to Nitropolis 2, with additional Nitro Booster modifiers enhancing their functionality.

Which game introduced Avalanche Wins?

Avalanche Wins first appeared in Nitropolis 3.

Does Nitropolis 3 have a different setting?

Yes. While the first two games take place in a futuristic city, Nitropolis 3 moves the action to a toxic beach wasteland.

Do all three games feature the same animal gangs?

Yes. The familiar gang characters return throughout the series, although the environments and gameplay mechanics evolve with each release.

Which game has the highest maximum win potential?

Nitropolis 3 features the highest maximum win potential in the original trilogy, increasing it beyond the limits of the first two games.

Recommended

Fox-Mayhem-vs-Reactoonz-2-Two-Play’n-GO-Slots-with-Very-Different-Gameplay

Compare Fox Mayhem and Reactoonz 2, exploring gameplay, features, mechanics and bonus rounds to see how these Play’n GO online slots differ.

Fox-Mayhem-vs-Buffalo-King-Megaways-Animal-Slots-Compared

Compare Fox Mayhem and Buffalo King Megaways, including features, reels, bonuses, volatility and gameplay to see how these animal-themed online slots differ.

Rich-Wilde-and-the-Tome-of-Madness-vs-Horror-Themed-Slots-at-Slingo-Dark-Adventure-Features-Compared

Compare Rich Wilde and the Tome of Madness with horror-themed slots at Slingo, exploring dark themes, bonus features and gameplay styles.

Rich-Wilde-and-the-Tome-of-Madness-vs-Book-of-Dead-Cluster-Pays-or-Classic-Reels

Compare Rich Wilde and the Tome of Madness with Book of Dead, exploring cluster pays, classic reels, bonus features and gameplay styles.

Back to top