Nitropolis 2
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Nitropolis 2 Slot Review

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How to play Nitropolis 2 mobile slot

The Nitropolis 2 slot is a beast of a machine with 191,102,976 ways to win, 6 reels and dogs that may chew you up and spit you back out again.

Imagine Blade Runners or Judge Dredd but with dogs. You have the gritty grimy city of the Nitropolis 2 mobile slot with its dark punk bleak futuristic outlook, where the cop dogs are chasing the criminal underclass of pugs, cats, and rats.

It’s a fun slot theme that worked in the original Nitropolis slot, and works just as well in this sequel. And with over 191 million possible ways to win (you saw that right), you know this isn’t your normal kitchen variety video slot machine.

This is one best suited for experienced slot gamblers looking to move beyond the now boring Megaways slots and onto something totally new and exciting with the X-iter games by Elk Studios.

Nitropolis 2 slot has sticky win respins and expanded reels

The game starts with 6 reels and 4096 ways to win. Every once in a while, if two symbols are the same on top of each other or just randomly, you’ll get a nitro reel.

That nitro reel can have anything from 4 to 12 stacks of the same symbol, taking up space of 2 symbols. It’s how you get those magical millions of ways to win: by catching as many nitro reels as you can.

Which in the base game is maybe one to three a spin. But on the bright side, all winning symbols (in and out of the nitro reel) will respin and give you another go at catching a win.

But it’s in the free spins where the nitro reels flourish, as three scatters will trigger the Nitropolis slot bonus game where all nitro reels stay sticky till the end of the round, rather than the end of your winning spins.

Thank-fully the base game is action packed

You don’t catch the free spins very often. Sometimes, you can have a whole playing session without catching it. Not unlike the Spartan King slot or Big Fin Bay slot review by Thunderkick.

But there are many ways to hit the top win of 10,000x your bet, and it involved the Nitro Booster reel at the top. This shows special bonus symbols that can trigger any one of 7 bonus features.

Some affect the whole game; you’ll get a pay both ways Nitropolis 2 slot for one spin. But most affect those nitro reels – either upgrading the symbols within to richer ones on the paytable, or turning the symbols wilds, or matching all the symbols on all nitro reels.

It’s fun, it’s effective, and it certainly made us feel like we were one step closer to reaching that top win. Just don’t forget that this is a cold and dark world, and it can leave you empty as often as thrilled.

You might like: Here’s some more Elk Studios slots to play online including the more recent Nitropolis 3 slot.

Game Screenshots

Nitropolis 2 slot stats

Mobile Slot releasedApril 2021
Slot typeVideo Slot
Slot reels / paylines6 Reels / 191,102,976 Ways to Win
House edge / RTP5% / 95%
Slot volatilityMedium/High
Min/Max bet0.20 / 100
Max win10,000x your bet
Free spins10 to 20 Free Spins / Locked Expanded Reels
Bonus roundsExpanded Ways To Win, Sticky Wins Respins, Pay Both Ways, Symbol Upgrades, Stacks of Symbols, Stacks of Wilds
Slot ThemesAnimals
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Bonus Features

Wild: The wild symbol substitutes for all symbols except the bonus and nitro booster.

Respins: Any symbols that are part of a win respin individually, with any new results giving you a potential payout and a new respin. This ends when no winning symbols show up on a respins.

Nitro Reel: A nitro reel always covers two symbol places and can be the size of 4 6, 8, 10 or 12 symbols, all always a stack of identical symbols. This increases the number of ways from the starting 4096 ways to up to 191,102, 976 ways to win.

A nitro reel can appear in an initial spin and randomly when two symbols are vertically next to each other on a respins after a win.

Nitro Boosters: These are separate reels above the main reels that stop before your spin finishes. They contain feature symbols and bonus symbols.

  • Pay Both Ways: The slot will pay from left to right and from right to left for the next spin.
  • Nitro Wild: All symbols inside the nitro reel for that reel will land as wild symbols.
  • Nitro Match: All symbols in the nitro reels will now match over all 6 reels.
  • Nitro Upgrade: The number of symbols in the nitro reels upgrades and increases to a higher number of symbols.
  • All Wilds: All symbols inside all nitro reels on all 6 reels will turn wild.
  • All Match: All symbols in all of the nitro reel will match with a payout symbol on the reel to the left.
  • All premium: All symbols in each of the nitro reels will land as one of the four highest paying symbols on the paytable.

Scatters and Free Spins: 3 or more bonus symbols will trigger the Nitropolis 2 slot free spin bonus. The bonus symbols can appear in the main reels, a nitro reel and a Nitro booster.

  • 3 bonus symbol: 10 free spins
  • 4 bonus symbol: 15 free spins
  • 5 bonus symbol: 20 free spins
  • 6 bonus symbol: 20 free spins

During the free spins, all Nitro Reels lock in place and remain in play for the duration of the free spins.

Nitropolis 2 Review Conclusion

With a great theme tune and an even better slot theme, it's hard not to be drawn into this Nitropolis 2 slot game.

We love the way you get expanded ways to win within the game, and randomly gives you a shed load of bonus features that trigger with each other.

Sometimes they work, sometimes they don't, but that's the fun in this volatile Elk slot game.

We wish the free spins could trigger more often, but there's enough action in the base game alone to entertain most advanced gamblers.

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Review by Lucky Mobile Slots, last updated: March 7, 2024 - Rating 5

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