Gritty Kitty of Nitropolis
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Gritty Kitty of Nitropolis
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Gritty Kitty of Nitropolis Slot Review

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How to play Gritty Kitty of Nitropolis mobile slot

Welcome to Nitropolis, where a Gritty Kitty is rising to the top in this post-apocalyptic nightmare and walk away with 25,000x your bet. It’s explosive in the best way.

The Gritty Kitty of Nitropolis slot is a 6 reels and 4-rows machine from the Nitropolis slots series with dropping symbols, expanding reels of up to 8 rows, a charged feature and up to 262,144 ways to win.

Gritty Kitty of Nitropolis game reels are split in two – the main game is 6×4 and starts with 4096 ways to win, but with each win, the symbols explode and drop down more, expanding those reels by +1 symbol.

On the top is the feature reel, which is 6×3. It hides all the good stuff: all the special bonuses that include as simple as wilds to nitro symbols, free spins and instant cash wins. This is another of the busy Elk Studios slots with busy, complex features, but don’t let that stop you from heading into this grim and dank underworld.

One of many in the Nitropolis slots series

The original Nitropolis slot introduced us to a world where dogs and cats have taken over, Max Max/Blade Runner style. In Nitropolis 3, we saw them head on holiday, and in Nitropolis 4, we up the ante to give you a massive 50,000x your bet max win.

So this Gritty Kitty of Nitropolis slot feels a bit of a step back, with the dogs removed, the cats now taking over the underworld, and (more importantly) a lesser win.

It has more features than many of the others in the series, giving the gameplay a quick touch that could see you getting lost as you wait for the special features to pop down from the above reels.

You just have to be careful, as you bet 0.10 all the way up to 140 a spin, that you don’t lose sight of your budget.

3 Stars for the Gritty Kitty of Nitropolis slot review

In a series filled with glowing gems, this Gritty Kitty of Nitropolis mobile slot feels a little duller than its predecessor. What’s ironic is that if you knew nothing of the other games, you would probably happily play and love this casino game.

In this Gritty Kitty of Nitropolis slot, you have nitro reels that show up to 6 symbols high, you have expanding reels, mega symbols, you have 3 respins with coin wins, you have free spin bonus features with sticky Nitro Reels… you have it all.

If it had been the first in the series, we may even have given it 4 stars. But there is a better version of this type of game for high-variance slot players, so it gets only a 3-star review.

It’s still very playable while you jump around the other Nitropolis cities at any of the best casinos online.

Game Screenshots

Gritty Kitty of Nitropolis slot stats

Mobile Slot releasedFebruary 2024
Slot typeVideo Slot
Slot reels / paylines6 Reels / 4096 Ways to Win
House edge / RTP6% / 94%
Slot volatilityHigh
Min/Max bet0.20 / 140
Max win25,000x your bet
Free spins8, 10, 12, or 15 Free Spins | Sticky Nitro Reels
Bonus roundsAvalanching Reels, Mega Symbols, Free Spins, Assasin Spins, Nitro Features
Slot ThemesAnimals
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Bonus Features

Avalanching and Feature Reel: Each time you get a win paid out, these symbols explode and are removed from my reels. Each column included in a win expands with 1 row. The symbols in the feature reel above drop down into the main grid, followed by new symbols filling all the empty spaces. This continues until no new wins can be found.

A Nitro Reel: These special symbols always cover two symbols' positions but can contain 4, 6, 8, 10 or 12 identical symbols. A big Nitro Reel always covers six symbol positions and contains 2-6 identical 2x2 payout symbols.

Nitro Upgrade: This will stay on the reels until a Nitro Reel lands and will automatically upgrade the number of symbols in the Nitro Reels.

Nitro Match: Replaces all symbols in the Nitro Reels to match payout symbols, selected randomly. If no nitro reels are in view, it will stay pending until one appears.

Nitro Wild: This replaces all symbols in the Nitro Reels with wild symbols. If no Nitro reels are currently in view, it will stay pending until one shows up.

TNT Symbol: This removes all payout symbols on the same and adjacent reels. This activates once all winning symbols payout.

Max Row Feature: Can activate during any spins and expands up to 6 reels to a maximum of 8 rows high.

Mega Symbols: All symbols, including wild symbols, can appear as 1x1, 2x2, or 3x3. If big symbols cannot completely drop down from the feature reel, they will either crush 1x1 in the main grid to fit or split up into 1x1 symbols in the feature reel.

Instant Coin Win: Triggers when a coin symbol covers the entire feature reel (6x3)

Assassin Spins: When the assassin symbol covers all the features, you get 3 free spins. These are only played with coin symbols, nitro reels, TNT symbols and blockers. Landing coin symbols or nitro reels during the assassin spins reset the spin counter to 3. You may find the Golden Collector symbol, which collects the value from all coins currently on the game grid. Once the 3 spins are done, you collect all the money on the reels.

Free Spin Bonus: 3, 4, 5, and 6 bonus symbols will trigger 8, 10, 12, or 15 free spins, respectively. All Nitro Reels are sticky during the free spins. Three or more bonus symbols triggers the number of free spins.


  • High 25,000x maximum win
  • Free Spins with locked Nitro Reels
  • Avalanchin Reels help create more wins
  • Mega Symbols
  • Nitro Features add extra value to your spins


  • Too high volatility for some players
  • Lots of features can get confusing for beginners
  • RTP can differ betwen slot sites

Gritty Kitty of Nitropolis Review Conclusion

This Gritty Kitty of Nitropolis slot has so many great features and a high top win of 25,000x your bet we have to recommend this Elk game.

Just make sure you read through all the features, as you might miss a few as you play. The trick is to expand this 262,144 ways to win slot, catch some mega symbols and hope all the upgrades work in your favour.

A lot has to line up to see you get to the top win, but the good news is that you only need a couple to see a chain reaction in these avalanching reels.

The Nitropolis 2 slot is probably still our favourite in the series, but we may head into the underbelly of this city and sharpen our claws with this Gritty Kitty.

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Review by Lucky Mobile Slots, last updated: February 16, 2024 - Rating 3

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