Nitropolis 4

Nitropolis 4

RTP: 94%
Volatility: High
Max Win: 50,000x
Released: 2023
Provider: Elk Studios

Nitropolis 4 Slot Review: Elk Studios’ Nitro-Gang Is Back

After a small break, the old gang is back in town and they are ready to go back to work. The gear is packed, a new oil rig is located and it’s time to get drilling. The latest Nitropolis 4 slot of the series promises lots of excitement and mega payouts of up to 50,000x the stake.
  • High payout potential
  • Plethora of bonus features
  • Great visual details
  • Low RTP
  • High volatility

Quick Info

ProviderElk Studios
Type of slotVideo
Bet range$0.20 – $50
Max win50,000x
Bonus buyYes
Bonus featuresYes (2)

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About Nitropolis 4 Slot in Detail


When you open Nitropolis 4 for the first time, you are instantly greeted with 6 reels, 4 rows, and 4,096 ways to win. The bets in the slot range from $0.20 up to a maximum of $50 per spin. 

Theme and Graphics

From the very start, Elk Studios’ slots came with outstanding visual details. The same standard applies to Nitropolis 4. The symbols in the game are well-designed and the animations are on a top level. This gives the slot an attractive appearance, which is easy on the eyes. 

Symbols and Features


The symbols in Nitropolis 4 start with low-tier card symbols, ranging from J to A. They award payouts from 0.10 to 0.30x the stake. 

The medium-tier symbols in the slot are the Rogue Hats, Pug Thugs, Gritty Kitty, and Dirty Dawgs Logo symbols. The payouts here range from 0.15 to 1x the stake. 

The high-tier symbols are the four gang members. The payouts from them go from 0.50 to 3x the stake for the top-paying Doberman symbol.

When it comes to bonus features, Nitropolis 4 is definitely an overwhelming slot. There are a lot of features to cover, so we’ll focus on the main ones and try to explain them as simply as possible.

When you land a win on the screen, the winning symbols are removed and new symbols land on top in the empty spaces. At the same time, you get one additional row, for every win, up to a maximum of 8. In return, this also increases the number of ways to win. 

You can also land a Wild symbol, which replaces all other symbols in the game, except the Bonus and Super Bonus symbols. 

You can also land Big symbols, which cover 1×1, 2×2, or 3×3 positions on the screen. 

To trigger the bonus game, you need to land 3, 4, 5, or 6 Bonus symbols on the screen. In return, you get 8, 12, 16, and 20 free spins.

If the feature is triggered with a combination of a Super Bonus symbol, the Super Bonus Game is triggered and is played on the maximum 8 rows and with a Both Ways Win feature active.

During the main bonus features, you can trigger up to 8 additional features: 

  • The Both Ways Win feature makes it possible for winning combinations to start from both the left and the right side of the reels.
  • The ReDrop feature holds all Nitro Reels, Nitro Multipliers, Wild, and Bonus symbols in place, while the rest re-spin and new symbols drop.
  • The Max Rows feature expands the number of rows to a maximum of 8.
  • The Garbage Collect removes all positions of one random symbol.
  • The Nitro Appear adds a Nitro Reel, replacing the existing symbols.
  • The Nitro Wild adds Wild symbols to an already existing Nitro Reel.
  • The Nitro Upgrade upgrades a Nitro Reel and adds additional symbols.
  • The Nitro Match matches a Nitro Reel with an adjacent symbol. 

As for the Nitro Reels, they cover two positions and can contain from 4 to 12 symbols with a 1×1 size. The Big Nitro Reels cover 6 positions and contain up to 6 symbols with a 2×2 size. 

The Nitro Multiplier covers 2 positions and will multiply all wins with its multiplier number. 

The slot also comes with an X-iter option. This is basically a Bonus Buy option where you can buy the Bonus and Super Bonus for a price of 100x and 500x the stake. 

RTP and Volatility


The RTP value in Nitropolis 4 is set at 94%. Compared to most other slots in the industry that come with a 96% RTP or higher, the RTP is lower, which is a bit disapponting. The volatility is set to high, so don’t expect those mega payouts to come lightly. 

Nitropolis 4 Slot Review Summary


Nitropolis 4 is without a doubt a fun slot in every way. It shows the ingenuity of the designers at Elk Studios and how much work and thought they put into their new releases. The game is definitely not for the faint-hearted, as it can award massive payouts but can also eat away massive bankrolls in a heartbeat.  

More Slots from the Nitropolis Series

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Volatility: Medium to high
Max Win: 10,000x
Released: 2020
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Max Win: 10,000x
Released: 2021
Provider: Elk Studios
RTP: 95%
Volatility: Medium to high
Max Win: 50,000x
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Can You Play Nitropolis 4 Slot for Free?

Yes, you can play Nitropolis 4 in demo mode.

Does Nitropolis 4 Slot Offer a Progressive Jackpot?

No, Nitropolis 4 is not a jackpot mode.

Does Nitropolis 4 Slot have a Bonus Buy Feature?

Yes, you can buy the bonus round by using the X-iter option.

Is Nitropolis 4 Slot a MegaWays Slot?

No, Nitropolis 4 is 4,096 ways to win slot.

Is Nitropolis 4 Slot Mobile-Friendly?

Yes, all Elk Studios slots are mobile-friendly.