ELK Studios

Nitropolis 4

Slots Video Slots Futuristic Fire Animals Sci fi Apocalypse

High-volatility Futuristic drilling slot with expanding reels and compounding Multipliers

SlotRanker Score

/ 99

05099

The SlotRanker Score is calculated from the visible data below. It is not affected by affiliate deals, and it cannot be bought.

How this score is built

RTP

94%

return to player

Volatility

High volatility

variance

Max win

50,000×

top multiplier

Min bet

$0.20

per spin

Reels

4096 lines

Player rating

4.1 ★

18 votes

DEMO Play free, no signup

ELK Studios

Embed on your site

4.1 / 5

18 ratings

User ratings are shown separately from the Slot Score unless stated otherwise.

Five weighted signals shape the composite. Four context signals refine ties. See how we rate for the full methodology.

Payouts & RTP6/10

RTP 94% → 6.0/10

Volatility9/10

high → 9.0/10

Win Potential9.4/10

x50000.00 (50000×) → 9.4/10

Features10/10

24 features → 10.0/10

Game Mechanics8.2/10

f=24 r=6 p=4096 → 8.2/10

Context signals (tie-breakers)

Layout5/10

6x4 → 5.0/10

Bet Flexibility4/10

0.2–5 (×25) → 4.0/10

Provider Reputation7.1/10

provider avg 7.1 → 7.1/10

Popularity7.5/10

synthetic proxy → 7.5/10

Popularity blends real player search demand (~30 markets) with a catalogue-derived proxy; games without measurable search demand use the proxy alone. Not live play telemetry.

Cite this score

SlotRanker Score: 76 — Nitropolis 4 by ELK Studios

https://slotranker.com/elk-studios/nitropolis-4#score

How to cite

Slot Summary

Multipliers that multiply one another can sharply alter a cascade before the reel area settles. Nitropolis 4 places that promise inside a 6x4 drilling slot with expanding reels, Colossal Symbols, and Nitro Reels, so the board can change shape as well as value. ELK Studios pairs this dense mechanical setup with High volatility, a 94% RTP, and an x50000.00 maximum win.

How It Plays

The 6x4 base combines Avalanche, Cascading, and Dynamic Reels, so repeated results are not confined to one fixed reel state. Colossal Symbols add another way for the occupied space to change.

Nitro Booster can randomly apply reel modifiers, including maximum expansion, symbol collection, Wild changes, upgrades, matches, redrops, and Pay Both Ways behavior.

Nitro Multipliers affect wins already visible on the reel area. When several appear together, they multiply one another instead of merely adding separate values.

Theme & Atmosphere

The Animals cast works an offshore drilling job in a Futuristic, Sci fi setting, turning the search for Nitro into the reason for the changing reel machinery.

Apocalypse and Fire cues give the industrial premise a hazardous edge, while the roughneck theme keeps the unusual machinery connected to a recognizable occupation.

Futuristic Fire Animals Sci fi Apocalypse

Features & Win Potential

Dynamic Reels and Reelset Changing keep the 6x4 starting area from acting like a fixed rectangle, while Colossal Symbols and Mega Symbol (3x3) change how much space one symbol occupies.

Avalanche and Cascading clear completed results for replacements, while Remove Symbols, Symbol Swap, Splitting Symbols, and Stack provide several routes for changing the next calculation.

Multiplier and Random multiplier can raise visible wins, with several Multiplier values compounding when they occupy the reel area at the same time.

Bonus & Free Spins

Free Spins begin when enough bonus symbols land, and Nitro Reels remain fixed throughout the round. Additional Free Spins can lengthen that persistent reel state.

Bonus Buy access comes through X-iter modes, including a direct Super Bonus route where Dynamic Reels reach their widest state and Pay Both Ways stays active.

Spec sheet

Nitropolis 4 at a glance.

Identity

Slot nameNitropolis 4

StudioELK Studios

Released2/8/2023

Math

SlotRanker Score76

RTP94%

VolatilityHigh volatility

Max win50,000×

Bet range$0.20 – $5.00

Player rating4.1 / 5 · 18 votes

Format

Reels6

Paylines4096

Layout6x4

Expected average based on this slot's 94% RTP — individual sessions vary with volatility.

Bet per spin

Spins per hour400

Session length (hours)

Cost per hour$4.80

Cost per session$4.80

Estimate only, for entertainment purposes — treat gambling as entertainment, not a way to make money, and set a budget you can afford to lose.

How long could a bankroll last on Nitropolis 4? We simulate thousands of sessions from this game's published RTP and volatility — the long-run math, not a prediction of your next spin.

Bankroll ($)Bet per spin ($)Speed

Volatility tier: High

Running simulation…

How this works

Each simulated spin either misses or returns a win drawn from a log-normal distribution, with the hit rate and spread set by the slot's volatility tier (High). The model is calibrated so the average return equals this slot's published RTP (94.00%), with wins capped at its top multiplier (50,000×).

This is a simplified, parametric model of the game's math — not its real paytable. It exists to make the house edge visible over many sessions, so the numbers above are averages across thousands of runs, never a forecast of one.

This is math, not a prediction. Real sessions vary wildly, and no strategy changes a game's built-in house edge. Play for fun, set limits, and never bet more than you can afford to lose.

Where to play Nitropolis 4

No matching casinos for your region yet

Casino availability depends on where you play from. We only show casinos that accept players from your country.

Compare Nitropolis 4 with other games

	Nitropolis 4 Score 76This game	Beam Boys Score 81	H.O.P.E. Score 70	Purrrminator Score 83	Flame Score 81
Identity
Studio	ELK Studios	Hacksaw Gaming	Nemesis Games Studio	Relax Gaming	NextGen
Released	2/8/2023	1/21/2024	10/17/2021	2/24/2025	4/11/2018
Math
RTP	94%	96.35%	96.6%	96.1%	96.61%
Volatility	High volatility	Medium/High	—	Medium/High	High volatility
Max win	50,000×	12,500×	—	5,000×	—
Format
Reels	6	5	5	6	5
Layout	6x4	5x4	5x3	6x5	5x3
Paylines	4096	6561	25	Cluster Pays	20
Min bet	0.2	0.1	0.1	0.1	0.15
Max bet	5	1	125	200	75
Features
Progressive	—	—	—	—	—
Wild symbol	✓	✓	✓	✓	✓
Free spins	✓	✓	✓	✓	✓
Scatter symbol	✓	✓	✓	✓	✓
Multiplier	✓	—	—	—	✓
Bonus game	—	—	✓	✓	✓
Respins	—	—	—	—	✓

Every number is shown as a delta against Nitropolis 4.

Comparing against

Nitropolis 4

ELK Studios

RTP

94%

Max win

50,000×

Score

+ Bonus Game− Multiplier

+ Bonus Game− Multiplier

+ Bonus Game+ Respins

Explore More Games with Similar RTP

	Provider	RTP	Volatility	Max win	Score
Scopa	Habanero	93.96%	High volatility	4,000×	67
Carnival Cow Coin Combo	Light & Wonder	93.97%	High volatility	30,000×	71
Dream Drop Diamonds	Relax Gaming	93.98%	High volatility	10,640×	66
Flying Hippo	Pragmatic Play	93.99%	High volatility	5,000×	68
Nitropolis 4	ELK Studios	94%	High volatility	50,000×	76
Cash Truck 3 Turbo	Quickspin	94%	High volatility	40,000×	78
Thunderstruck Stormchaser	Stormcraft Studios	94.01%	High volatility	10,200×	75
Masters Of Olympus	Snowborn Games	94.02%	High volatility	20,000×	77
San Quentin 2	NoLimit City	94.03%	High volatility	200,000×	76
I Hate Fairytales	Elysium Studios	94.04%	High volatility	33,934×	78
Cash Truck	Quickspin	94.05%	High volatility	25,000×	76

01What are the RTP and volatility of Nitropolis 4?

Nitropolis 4 has a 94% RTP and High volatility, with an x50000.00 maximum win.

02How do Nitro Multipliers work?

Nitro Multipliers apply to wins in view, and several Multipliers can multiply one another when they appear together.

03What triggers Free Spins?

Three or more bonus symbols trigger Free Spins, where the Nitro Reels remain fixed throughout the round.

04What changes in the Super Bonus?

A combination of bonus and super bonus symbols activates the Super Bonus with maximum reel expansion and Pay Both Ways active.

05What does X-iter provide?

X-iter offers 5 direct-entry modes, ranging from a 2x option with increased bonus access to a 500x Super Bonus route.

Series

Nitropolis

View all 6 games

Game	Year	RTP	Volatility	Slot Score
NitropolisELK Studios	2020	96.1%	High volatility	75
Nitropolis 2ELK Studios	2021	95%	Medium volatility	70
Nitropolis 3ELK Studios	2022	95%	High volatility	83
Nitropolis 4CurrentELK Studios	2023	94%	High volatility	76
Nitropolis 5ELK Studios	2024	94%	High volatility	77
Nitropolis TVLatestELK Studios	2025	94%	High volatility	72