All the lovable creatures and features are back in this extravaganza!
High max win of 50,000x the bet
Frantic gameplay
Cons
Lower RTP than Nitropolis 3: 94% vs 95%
Nitropolis 4 slot overview
Nitropolis 4 – Welcome to the freak show!
Game developer ELK Studios is back with a new version of their popular Nitropolis series.
Fans of the series will quickly recognise the similarities seen in Nitropolis 3 in this 4th edition.
For example, the game engine from ELK’s Gold slots, such as Dead Man’s Gold, was introduced last time and reused successfully again.
However, this time the funky soundtrack from Nitropolis 3 has been replaced with a heavier electronic sound.
Nitropolis 4’s max win potential is once again mind-blowing, and there is a feast of features to explore, but the RTP change is disappointing and will scare some players off from playing other games instead.
Best UK Online Casinos to play Nitropolis 4
If you want to play Nitropolis 4 for real money, we have selected some excellent UK online casinos for you.
New players who make a first deposit are eligible for a welcome bonus.
Good RTPs on NetEnt, Nolimit City and Thunderkick slots
18+ New UK players only | 23 No Deposit Spins Winnings Have 10x Wagering Requirements | Max Cashout on No Deposit Spins is £100 | Cash Spins Winnings Are Wager-Free | No max cash out on Cash Spins | Eligibility is Restricted for Suspected Abuse | Skrill Deposits Excluded | Spins Values Are £0.10 Per Spin | All Spins Expire in 48 hours |
Welcome Bonus: 50 Cash Spins on Big Bass Splash + 50% Match Bonus up to £50
Impressive games selection
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18+. New players only. Min. deposit £20. Max. bonus bet is £5. Welcome Offer is 50 free spins on Big Bass Splash on your first deposit and 50% match up to £50 on your 2nd deposit. To claim the free spins you also need to wager a minimum of £10 of your first deposit on slots. Free spins must be used within 72 hours. Winnings from free spins credited as cash funds and capped at £100. These cash funds are immediately withdrawable. Bonus funds expire in 30 days, unused bonus funds will be removed. Bonus funds are separate to Cash funds, and are subject to 10x wagering the total bonus. Only bonus funds count towards wagering contribution. Affordability checks apply. Terms apply. Please gamble responsibly. BeGambleAware.org
New players only | Deposit & wager at least £10 to get free spins | Free Spins winnings are cash | No max cash out | Eligibility is restricted for suspected abuse | Skrill deposits excluded | Free Spins value £0.20 per spin | Free Spins expire in 48 hours |
You can try this slot for free right away by playing our Nitropolis 4 demo. There are plenty of new features to try out before deciding if you want to play this game on a real money version once it has officially been released on UKGC-licensed online casinos.
To avoid becoming repetitive, we will not go on about what we feel about this change again, but instead, conclude that it’s a big shame that ELK has decided to take this path on many of their new releases.
While Nitropolis 3 was released as a 95% RTP version, unfortunately, this 4th edition is only available as a 94% RTP version.
RTP comparison for Nitropolis 4
If ELK Studios decides to release more RTP versions of Nitropolis 4, you will find that updated information here.
Meanwhile, you can choose any trusted online casinos on this page that promote ELK Studios slots and Nitropolis 4.
Why RTP is important when playing slots
Whether we like it or not, the Return to Player, or RTP, of a slot significantly impacts a lot of crucial elements that come with playing slots.
The RTP is another term for the average percentage that a slot pays back for each stake. So, when a slot has a 96% RTP, it will pay back, on average, 96p for each pound staked. As you can imagine, the higher the RTP, the better it is for you, the player, as this will result in:
More spins before your money runs out
More spins = more chances to win
Increased playing time for the player
More value for money for the player
A lower profit margin for the casino
History of RTP and online slots
In the “old days”, all online slots had a default RTP, meaning the Return to Player was the same for each slot, no matter which online casino you played it in. However, since around 2020, due to regulations, increased Gambling Taxes and rising costs, online casinos started pressuring slot providers to release slots with different RTP configurations.
In effect, the online casino now had a choice: it was now able to offer its players a lower-paying RTP version. You could be playing a specific slot with a 96% RTP at casino A, and play the same slot with a 94% RTP at casino B, without even knowing it. The slot may look and feel the same, but the maths model underneath, which is the heart and soul of a slot, may be different, with all the negative consequences that come with it.
An example in real numbers
To illustrate the difference between playing a high-RTP slot versus playing the same slot but with a lower RTP, we have done some calculations.
Let’s take, as an example, one of the most popular online slots ever made: Book of Dead by Play’n GO. It has five possible RTP configurations: 84.18%, 87.25%, 91.25%, 94.25%, and 96.21%. Of course, other slots have different payout percentages, so results will vary.
We have calculated for Book of Dead, per RTP configuration, how many spins it takes to run out of money, based on theoretical losses (house edge) per spin, a starting balance of £100 and a stake of £1 per spin.
Book of Dead RTP
Theoretical Playtime
House Edge
96.21%
2,612 spins
3.79%
94.25%
1,721 spins
5.75%
91.25%
1,131 spins
8,75%
87.25%
776 spins
12.75%
84.18%
625 spins
15.82%
As you can see in our calculations, there are huge differences in the number of spins when you compare the different RTP configurations. The difference between the 96.21% RTP and the 94.25% RTP version is over 900 spins!
Conclusion
Playing with a higher Return to Player increases your chances of winning and playing time. So, when you want to play an online slot, always try to find a casino that offers it at the highest payout setting.
Why RTP is important when playing slots
Playing with a higher Return to Player increases your chances of winning and playing time.
Gameplay and features
Nitropolis 4 is highly volatile and starts on a 6-reel and 4-row game grid, but can expand to 8 rows and up to 4,096 ways to win.
The slot uses an Avalanche mechanic where the winning symbols are removed and replaced by new ones until no more wins happen.
After each win, a new row is added to the game panel until you reach a maximum of 8 rows.
Betting options for UK players start at 20p and go up to £2 (aged 18-24) and £5 (aged 25+) per spin.
ELK Studios has once again packed this Nitropolis version full of different features.
Features explained:
Big Symbols = 2×2 or 3×3 pay symbols, and wilds appear occasionally.
Special Reels, Multipliers, and Boosters = Nitro Reels where many symbols are squeezed into a smaller space, and Multipliers up to x12 can land on any spin. Also, the two monitors can show boosters anytime, releasing modifiers like expanding rows, winning both ways, special wilds, and more.
Free Spins = 3, 4, 5, or 6 bonus symbols trigger 8, 12, 16, or 20 Free Spins. Here the Nitro Reels are sticky, and the reached row stays permanent.
Nitropolis 4 Bonus Buy
Where available, you can choose between buying enhanced spins for x2 the bet to 100x for the Free Spins. Super Free Spins are also available for 500x the bet, where max rows and win both ways are active during all spins.
What is the maximum win on Nitropolis 4?
There are some high max win ELK Studios slots available, but in Nitropolis 3, they raised the bar as they set the max win potential to an unusually high 50,000x max win.
ELK didn’t see a reason to change this setting and added the same 50,000x max win potential to Nitropolis 4.
You can, for example, win up to £250,000 with a £5 bet spin, which is huge.
On the downside, the slot is highly volatile to be able to promote such a high max win. So be prepared that most players will lose everything, while a few lucky ones can win really big.
CasinoWizard’s verdict: 7.5 out of 10
Nitropolis 4 is another excellent slot from ELK Studios.
Still, due to their greedy decision to lower the RTP to 94%, you are better off playing Nitropolis 3, which offers basically the same features and max win potential.
Once again, an awesome slot, but with a bad RTP.
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