Gritty Kitty of Nitropolis

by ELK Studios

They’re back! The downtrodden felines of Nitropolis are rising up in the first of five new slots from ELK. Gritty Kitty of Nitropolis will produce expanding reels, free spins, respins, a max win of 25,000x and more modifiers than you’ll ever know what to do with.

Slot information

RTP: 94.00%
Volatility: High
Max Payout: 25,000x stake
Reels: 6
Paylines: 4,096
Jackpot: No
Min Bet: 0.20
Max Bet: 100.00
Themes: Action, Animal, WTF
Release Date: 6th Feb 2024

Our rating

“ Grimy and potentially very rewarding. You’ll love it! ”

4.4 out of 5

Win potential

Play Gritty Kitty of Nitropolis

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Gritty Kitty of Nitropolis Screenshots

  • Gritty Kitty of Nitropolis Slot - Screenshot 1
  • Gritty Kitty of Nitropolis Slot - Screenshot 2
  • Gritty Kitty of Nitropolis Slot - Screenshot 3
  • Gritty Kitty of Nitropolis Slot - Screenshot 4

Gritty Kitty of Nitropolis Features

Prepare for an onslaught of modifiers as we embark on this quest to take back control of Nitropolis. These crazy cats have got a dozen tricks up their sleeves and when they start to unleash their fury on the reels, your balance might go wild. 

Regular wins can be found by landing matching symbols on consecutive reels, starting from the left-hand side. As this happens, winning symbols are removed and new ones drop down from the Feature Reel above. The size of the reel grows to eight spaces high, extending by one additional row for each win in a sequence. 

The regular symbols are made up of royals and four picture symbols that pay out up to 3x for a group of six. In addition to these standard symbols, you'll also see Nitro Reels—an extra large collection of standard symbols. The neon outline tells you that it is a little different from the rest and the number that appears above will show how many symbols are now counted in this cluster. It could be singular or double blocks, containing up to 12 individual symbols.

Modifiers & Bonus Play

The feature reel is full of special symbols with very specific powers that will hopefully send your bankroll skywards. Here are the special modifiers to watch out for as they drop from above:

If the Feature Reel is taken over by the Assassin symbol, you get to play three spins with your lives being rejuvenated for each coin or Nitro Reel that lands. Go three spins without one of these and it's game over. The multiplier values are then applied to your bet amount and that figure is stashed nicely in your balance. Collector symbols may so drop in and attract the value of all existing coins.

For up to 14 free spins, you'll need between three and six Scatter symbols with the added benefit of Nitro Reels and the row height staying as they are throughout the game. Scatter symbols will retrigger this bonus game if you are lucky.

Gritty Kitty of Nitropolis - Nitro Reels

Nitro Reels

The green, neon outline of a reel tells you that your symbols are bigger than you thought! They’ll provide you with up to 12 single symbols in one place or 6 double symbols. It all helps to boost your payline potential.

Gritty Kitty of Nitropolis - Feature Reel

Feature Reel

Winning symbols are removed and Feature symbols drop down from the Feature Reel to replace them. These can improve your chances of landing a win by blowing things up and generally messing with the symbols to your advantage!

Gritty Kitty of Nitropolis - Assassin Spins

Assassin Spins

Cover the Feature Reel with an Assassin symbol and you get to play a respin game. Coins and Nitro Reels replenish your three lives and Collectors will draw in the value of any coins. You’re awarded the collective multiplier value of all the coins after three non-winning spins.

Gritty Kitty of Nitropolis - Bonus Game

Bonus Game

Up to 14 free spins are handed out for landing between three and six Scatter symbols. Nitro reels and row heights stay put throughout your spins and you can also retrigger the feature.

Play now

Gritty Kitty of Nitropolis Review

Anyone who's been following the Nitropolis Saga in recent years will be super excited that this group of vigilante animals have decided to take back the streets and go up against Sergeant Nitro Wolf to reclaim what is theirs. This is part one in a series of five games that will culminate in the release of Nitropolis 5 in June 2024.


It's hard, heavy and grimy out there in this lawless street scene based somewhere in a dystopian version of an oriental city. The reels drop with a fury that is matched by the unsettling guitar music and it all helps to keep the adrenaline pumping. It isn't necessarily better than the previous instalment, Nitropolis 4, but it certainly feels grittier if that's even possible.


One of the things I love about most ELK slots is that you don't necessarily need to make it to the Free Spins Bonus to enjoy everything on offer. You can have just as much fun in the base game with all the modifiers showing up from time to time. The addition of the Assassins Spins is a massive plus and players outside the UK can head straight there for 500x.

Win Potential

Nitro is in short supply out there on these mean streets and your reward for claiming enough of it for yourself could be up to 25,000x. For this, you can expect extremely high volatility and the trademark 94% RTP.

My Verdict

Nitropolis had kind of gone off my radar in recent months and hearing that it was back with a big build-up series like this put a huge smile on my face. Gritty Kitty of Nitropolis has been the perfect way to start this mini-series and I can't wait to see where it goes from here.

Paul Clare
Reviewed by Paul Clare Last updated:

Paul spent plenty of time in arcades up and down the UK discovering all of the best fruit machines and watching them grow into the incredible online slots we see today. He still loves the basic format but also has a soft spot for games with big bonus rounds that progress as you play. Immortal Romance is one of his favourite slots of all time.

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