Nitropolis Slot by Elk Studios

Nitropolis is a 6x4 ways-to-win slot with Winning Respins by Elk Studios, released in 2020.

★ 4.8 (64,822)Elk StudiosRTP 96.1%Medium-high volatilityMax win 10,000x

96.10returns 96.10 of every 100 staked

5.1a win every 5.1 spins on average

10,000x2,000.00 at the minimum bet, 1,000,000 at the maximum

Game facts

Provider	Elk Studios
Game type	Slots
Release date	November 2020
RTP	96.1%
Volatility	Medium-high volatility
Max win	10,000x the bet
Reels × rows	6 × 4
Pays	85,155,840 ways to win
Bet range	0.20–100
Bonus buy	Yes
Wild symbol	Yes
Jackpot	No
Features	Nitro ReelsWinning RespinsScatter paysX-iter
Themes	AnimalFuturistic
Devices	Desktop and mobile browsers (HTML5)
App	Yes — how to install

Free demo of Nitropolis

Nitropolis also has a free demo mode with virtual credits.

Play Demo

The demo uses virtual credits: no deposit, no real-money wins.

Where to play for real money

Real-money play is only for adults and only at licensed online casinos where online gambling is legal for you.

How to play Nitropolis

Bet range: 0.20–100

Wins form when matching symbols land across adjacent reels from left to right.
Collecting 3 to 6 bonus symbols starts the Free Spins feature.

Bonus features

Free spins
3, 4, 5 or 6 bonus symbols award 10, 15, 20 or 25 free spins; 3 or more bonus symbols during the feature retrigger the same number of spins.
Bonus buy
Nitro Reels
blocks covering two positions on a reel hold 4, 6, 8, 10 or 12 symbols, raising the ways from 4,096 up to 85,155,840, and they can upgrade between respins.
Winning Respins
after every win the symbols in the win respin, and this repeats until no new win appears.
Wild
the mushroom cloud wild substitutes for all symbols except the bonus symbol and in free spins also counts toward scatter-pay wins.
Buy Bonus
a standard bonus or a super bonus with a guaranteed retrigger that adds an extra scatter-paying symbol.

Nitro Reels expand the reel grid by stacking 4 to 12 symbols into a single two-position block, compounding the available ways with each respin. In Free Spins, those blocks lock in place and a randomly assigned symbol pays whenever 3 or more land across different reels.

RTP and volatility

RTP version	Return per 100 staked
96.1%	96.10

Medium-high volatility — Medium-high volatility means wins arrive on average every 5.1 spins, with longer dry runs offset by the way Nitro Reels can stack and upgrade across a respin chain.

Nitropolis app: download and install

The Nitropolis app for Android downloads with the button on this page.

Tap the download button on this page to get the installation file.
When Android asks, allow your browser to install apps from this source.
Open the downloaded file from your notifications or downloads folder.
Confirm the installation when prompted.

Install app

Common questions

What is the RTP of Nitropolis?

The default RTP of Nitropolis is 96.1%.

What is the max win in Nitropolis?

The max win in Nitropolis is 10,000x the bet. At the maximum bet that is 1,000,000.

How volatile is Nitropolis?

Nitropolis has medium-high volatility. A win lands every 5.1 spins on average.

How do free spins work in Nitropolis?

3, 4, 5 or 6 bonus symbols award 10, 15, 20 or 25 free spins; 3 or more bonus symbols during the feature retrigger the same number of spins.

Can you buy the bonus in Nitropolis?

Yes, Nitropolis has a bonus buy.

How does the Buy Bonus feature work?

Players can purchase either a standard Free Spins entry or a super bonus that includes an additional scatter-paying symbol alongside the randomly chosen one.

What does the Wild symbol do in Free Spins?

The mushroom cloud wild substitutes for all symbols except the bonus symbol and, uniquely during Free Spins, also contributes to scatter-pay wins alongside matching symbols on different reels.