Free play

We do not host any real money casino games on our website. All games are free and cannot generate real money prizes. No tax or fee will be charged for using our website. You can rest assured that your information is protected under our Privacy Policy. SlotsCalendar is intended only for people over the age of 18.

Free play

We do not host any real money casino games on our website. All games are free and cannot generate real money prizes. No tax or fee will be charged for using our website. You can rest assured that your information is protected under our Privacy Policy. SlotsCalendar is intended only for people over the age of 18.

Ad disclosure

SlotsCalendar is an affiliate website. For this reason, some of the links that we recommend are affiliate links. To be precise, upon visiting a website through our link, and after making a deposit, we will be given a commission, with no further cost to the user. This can influence how the products appear on the page, but it will not influence our evaluations. All reviews and product recommendations are impartial as our editorial standards are commercially independent and follow a well-defined methodology. The information on this page is updated regularly but can be modified without us being informed.

Ad disclosure

SlotsCalendar is an affiliate website. For this reason, some of the links that we recommend are affiliate links. To be precise, upon visiting a website through our link, and after making a deposit, we will be given a commission, with no further cost to the user. This can influence how the products appear on the page, but it will not influence our evaluations. All reviews and product recommendations are impartial as our editorial standards are commercially independent and follow a well-defined methodology. The information on this page is updated regularly but can be modified without us being informed.

Play responsible

Online gambling is fun, but it can lead to addiction. Gambling addiction is a mental disorder that has both long-term and short-term consequences. SlotsCalendar’s mission is to educate its clients and help them acknowledge the risks they are exposed to. Stay in control, play responsibly!

Play responsible

Online gambling is fun, but it can lead to addiction. Gambling addiction is a mental disorder that has both long-term and short-term consequences. SlotsCalendar’s mission is to educate its clients and help them acknowledge the risks they are exposed to. Stay in control, play responsibly!

Good

Details

Category Video Slots
Slots Provider ELK Studios
Reel Setup 4096
Game Volatility N/A
Bet Level 0.2 / 100
Rating 7 / 10
Release Date 20 Dec 2022

Nitropolis 4 Review

The guys are back in action with the Nitropolis 4 demo, readier than ever to prove their incredible tenacity, this time in their quest to extract some Nitro! In typical fashion for this series, Nitropolis 4 free play displays breathtaking complexity and remarkable ways of entertainment! Showcasing 6 reels and 4 starting rows, this game has expansive reels that can raise the number of rows to 8, forming 4096 base paylines that can turn into millions of winning ways! Check out this review about the ELK Studios creation to uncover its details!

Theme and Design

The game theme once again revolves around a set of animals and their never-ending tenacity, this time taking over an offshore oil rig and drilling! The general atmosphere retains the cyberpunk roots that led this franchise to fame, featuring wiring and robotic sounds.

Serving as the background is a point of view similar to the aerials you would encounter with oil rigs, with a foggy (or, rather, smoggy) atmosphere and a lot of exposed metal. You can generally discover one overarching element, namely a collection of fantastic metal superstructures, serving their purpose of setting up an oil-extracting operation.

Most of the present structures enumerate towers, cranes and oil tanks, creating a complex backdrop ready to immerse you into this dystopian vibe. Aside from the distant setting, the closer parts form a control panel, ready to operate any complex machine, featuring buttons, levers, pressure gauges, screens, and many exposed pipes. The funniest detail, however, is the ‘Eat, sleep, drill, repeat’ mug, which perfectly encapsulates the general atmosphere in this slot machine.

Nitropolis 4 Theme

Apart from these details, this game also features exposed wiring and two holographic screens above the grid, responsible for displaying real-time information during crucial moments.

The colour palette is absolutely impressive, employing a beautiful combination of grey, sea green and salmon pink to create an understated setting without making it feel dull. As for the grid, it highlights much more intense colours, including various shades of blue, red, green, and purple, using a fantastic palette with a wide variety of nuances.

The animations are another impressive part appearing in this slot machine, considering they illustrate the complex winning system, thus becoming outright fantastic. They work complementary with this soundtrack, employing a tune emphasising synthesisers and various briefing phrases delivered in a robotic voice.

Nitropolis 4 Free Play Mobile Slot

Join the drilling operation from any handheld device by starting the mobile version for this slot! Using HTML5 and Flash technology, you can enjoy the game by simply starting in your preferred browser!

Technical Features

Reels 6
Rows 4
Paylines 4096
Adjust paylines
Min. bet 0.20
Max. bet 50
Jackpot  ✔️
Gamble
Autoplay ✔️
Free spins ✔️
Bonus round ✔️
Lines pay cluster

Wager limits

The betting opportunities aren’t as extensive as the experienced players or high rollers might like, only featuring a range between 0.20 and 50 credits; however, the many winning opportunities and bonus features make up for it, leading to tremendous rewards.

Bonus Features

Regular Nitro Reels contain 4, 6, 8, 10 or 12 symbols with a 1×1 payout, whereas the Big Nitro Reels have double the size.

The Nitro Multiplier covers two symbols with an arbitrary multiplication count, increasing all wins in view.

The Nitro Booster adds different features to the game, increasing the bonus capacity for all reels:

  • Redrop: all nitro reels, wilds, multipliers, and bonus symbols remain on the grid while the regular symbols disappear and these reels re-spin.
  • Both Ways: winnings pay in both directions instead of adopting only one.
    Nitropolis 4 Redrop Both Ways
  • Max Rows: the slot expands the reels to a maximum of 8 rows.
    Nitropolis 4 Max Rows
  • Garbage Collect: the system chooses symbols according to chance and removes them.
    Nitropolis 4 Garbage Collect
  • Nitro Appear: A nitro reel replaces existing symbols during ongoing spins.
    Nitropolis 4 Nitro Appear
  • Nitro Wild: a nitro reel filled with Wild symbols.
    Nitropolis 4 Nitro Wild
  • Nitro Upgrade: the game upgrades the nitro reel and adds additional symbols.
    Nitropolis 4 Nitro Upgrade
  • Nitro Match: a symbol in view matches with a nitro reel and fills it.
    Nitropolis 4 Nitro Match

The Bonus Game has two tiers:

  • Bonus Game: the activation process involves between 3 and 6 Scatters (3 gives 8 spins, 4 awards 12, 5 offers 16, and 6 rewards with 20).
    Nitropolis 4 Bonus Game
  • Super Bonus: it starts when pairing regular Scatters with the Super Bonus Scatter, launching the round under the same conditions and featuring Max Rows and Both Ways.

Each bonus characteristic has a specialised announcer, heralding it on the screens above the grid.

RTP & Volatility

The volatility level reaches the high mark, definitely accentuating this game’s priority: huge wins! Nitropolis 4 RTP reaches 94%, below the industry average of 96% and the usual 95% from the previous games.

SlotsCalendar tips: be mindful when choosing your bet in high-volatility games, considering they have the potential to quickly drain a budget until landing a big win.

Symbols

A slot machine of such complexity will undoubtedly feature a wide symbol variety. This one is no exception, also featuring changes in size and importance, as stated in another section of this Nitropolis 4 slot review.

Regular symbols have 3 tiers:

  • The lower paying royals being sprayed letter on metal sheets: A, K, Q, J.
    Nitropolis 4 Royal Symbols
  • Insignias: ‘Dirty Dawgs’, ‘Gritty Kitty’, ‘Pug Thugs’, ‘Rogue Rats’.
    Nitropolis 4 Mid Symbols
  • A quartet of animals acting as the leaders of the factions mentioned above: the dog, the cat, the pug and the rat.
    Nitropolis 4 Big Symbols

The special symbols include a substituting Wild, illustrating a sea mine, a bonus symbol, picturing a small submarine and offering free spins, and a multiplier, a liquid container.

How to play Nitropolis 4

Before going into detail about interacting with this game interface, we have to go into detail about two core principles in Nitropolis 4 free play:

  • Avalanche: all symbols taking part in a win will eventually leave space for other elements to replace them, each of these occurrences leading to an additional row.
    Nitropolis 4 Avalanche
  • Big Symbols: these elements have no particular requirements to land; they come in 2×2 or 3×3 forms and facilitate more efficient winning combinations.
    Nitropolis 4 Big Symbols How To Play

The slot machine has a function in each corner of the screen:

  • Upper left: comes with the menu button, offering the paytable, general rules and information, and an opportunity to enter a promo code.
  • Lower left: offers the betting modifier, allowing the player to choose among various pre-set wagers.
  • Upper right: the autoplay option, offering between 10 and 100 automated spins.
  • Lower right: this is the spin button, whose prolonged pressing has the same function as the auto-spin.

SlotsCalendar tips: more than ever, we recommend inspecting the paytable and the rules before starting the gameplay, considering this game has many details.

Best Casinos to play Nitropolis 4 Slot with Real Money

Play in the best possible environment by choosing a top casino featuring amazing conveniences and resolute safety standards! We understand the appeal of the Nitropolis 4 slot machine real money, and we recommend doing so in any of our partner casinos, offering spotless licencing, SSL encryption, reliable deposit and withdrawal methods, and a massive collection of other games!

Nitropolis 4 Free Spins and Bonus Offers

Thoroughly prepare for the drilling operations by choosing some Nitropolis 4 free spins, the best variant of playing for real money without any worries! If you’re interested in any other Nitropolis 4 bonus, or any other advantageous offer, the SlotsCalendar team offers its visitors fantastic options like welcome and reload bonuses, cashback, and even free money!

Nitropolis 4 Compared to Other Nitropolis Slots

Nitropolis 4 Nitropolis 3 Nitropolis 2
RTP 94% 95% 95%
Progressive 
Volatility high high high
Max Wager 50 100 100
Wilds ✔️ ✔️ ✔️
Scatters ✔️ ✔️ ✔️
Autoplay ✔️ ✔️ ✔️
Ways to win  4096 4096 4096

SlotsCalendar Verdict

Hits

  • amazing variety of bonus features
  • outstanding graphics
  • huge payout potential

Misses

  • may be too complex for some players

Nitropolis 4 Casinos

SlotGems Casino
SlotGems Casino Review
$10 Exclusive No Deposit Sign Up Bonus from SlotGems Casino Play Here
Katsubet Casino
Katsubet Casino Review
Up to $50 No Deposit on Hawaii Cocktails Sign Up Bonus from Katsubet Casino Play Here
Mirax Casino
Mirax Casino Review
Up to €50 No Deposit Bonus from Mirax Casino Play Here
Ice Casino
Ice Casino Review
€20 Free No Deposit Bonus from Ice Casino Play Here
Wintika
Wintika Review
Up to €30 No Deposit Bonus from Wintika Play Here

Similar Nitropolis 4 Slots

Axelerate Axelerate
ELK Studios
01/Aug/2024
SEE MORE DETAILS
Pirots 3 Pirots 3
ELK Studios
25/Jun/2024
SEE MORE DETAILS
Tropicool 3 Tropicool 3
ELK Studios
25/Apr/2024
SEE MORE DETAILS
Rogue Rats of Nitropolis Rogue Rats of Nitropolis
ELK Studios
05/Mar/2024
SEE MORE DETAILS
Frogblox Frogblox
ELK Studios
01/Mar/2024

Nitropolis 4 FAQ

  • Who made Nitropolis 4?

    ELK Studios is the studio who made Nitropolis 4.

  • Can I play Nitropolis 4 for free?

    If you want to play Nitropolis 4 for free, you are in the right place. Slotscalendar is offering a free version of Nitropolis 4!

Like our page and get special bonuses

    Report Issue

    Submit