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Nitropolis is an online slot created by Elk Studios with 4,096 paylines that can be expanded to 85,155,840 winning ways. Nitropolis features expanding symbols, sticky nitro reels, and a max potential payout of up to 10,000x your stake. 

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Nitropolis Slot Game Overview

This slot game has colourful and bright graphics and characters that match the post-apocalyptic theme perfectly. The reels are set against an industrial backdrop where you see some tall buildings. A robotic soundtrack plays in the background, accompanying the gameplay.

Nitropolis slot has 6 reels, and the game starts with a minimum of 4,096 paylines. To create a win, you must land three or more matching symbols on adjacent reels, starting from the leftmost reel. You can set your stake from £0.20 to £4 per game round. 

It features card royals A, K, Q, and J as low-paying symbols. These can award up to 0.5x for landing 6 of the same kind on consecutive reels. 

There are four logos representing four animal gangs (Rogue Rats, Pug Thugs, Gritty Kitty, and Dirty Dawgs) and these act as the medium-value symbols. They pay out up to 1.6x for matching 6 of them on adjacent reels. 

The high-paying symbols here are the leaders of the gangs – a rat, pug, cat, and dog. The dog is the most valuable; it can award up to 5x your stake for landing 5 on consecutive reels from left to right. 

There’s also a wild symbol which can substitute for all others except the bonus symbol. The wild can replace the scatter symbol in a scatter win during the Free Spins feature.

Nitropolis is available here at online slots site Wizard Slots. After creating an account, you can gain access to this slot game, as well as the rest of our collection of online casino and slot games.

How To Play Nitropolis

  • Launch the game.
  • Select your bet amount with the stacked coin icon that will take you to the available options.
  • Click the 3-line menu button to view the paytable and rules.
  • Click the spin button to play.

Nitro Reels

This feature is what makes the game unique. The base game gives you 6 reels and 4,096 paylines. While you spin, the nitro reels may appear at any time, making it possible for a single symbol to cover two vertical positions. 

Such symbols can contain between 4 and 12 symbols, adding more to the potential winning combo. This can potentially increase the number of winning ways to 85,155,840. 


After a successful spin, a respin is awarded. The symbols in the previous winning combo are spun again while the remaining reel positions are locked. The respins continue as long as you make new winning combos. 

If the nitro reels are active when there’s a respin, you could have the number of symbols upgraded to give you bigger spins. And if you do not win from the respin, there may be a second chance where only your activated nitro reels will respin. 

Free Spins

If you land 3, 4, 5, or 6 scatters, you receive 10, 15, 20, or 25 Free Spins. In addition, before the Free Spins begin, the slot selects one symbol, which may give scatter wins to boost your payouts. 

Anytime a nitro reel is activated during the Free Spins, it could be locked for the rest of the spins. You can also retrigger the Free Spins by landing 3 or more scatters. 

Nitropolis RTP

Return To Player (RTP): 96.1%

The RTP is a theoretical value and is shown as a percentage. It’s used to describe the percentage of money wagered a particular casino game may pay back to players over a certain period of time.

For example, if a game had a RTP of 92%, in theory, this would mean that for every £100 wagered, the game could return £92 back to players in potential winnings. However, it is important to note that winnings are completely random, and players are not guaranteed to receive this.

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*All values (Bet Levels, Maximum Wins etc.) mentioned in relation to this slot game are subject to change at any time.