Nitropolis is a 2020 ELK Studios slot set in a grimy futuristic city full of rats and robots. The base 6x4 grid has 4,096 ways, but Nitro Reels can stretch that to more than 85 million ways on a single spin. The top prize is 10,000x your stake. It suits you if you like big ways counts, respins that keep going while you win, and a free spins round with sticky Nitro Reels, and you are fine with high volatility.
How does Nitropolis work?
You start on six reels and four rows with 4,096 ways to win. Nitro Reels are framed symbols that take up two rows and show a number from 4 to 12, which is how many matching symbols that position holds. Each Nitro Reel multiplies the ways count, and with several on screen it can reach 85,155,840 ways.
Every win triggers a Winning Respin. The winning symbols stay and the rest spin again, and this continues as long as new wins appear. Nitro Reels can also grow their symbol count between respins, and a second chance respin can give a Nitro Reel a new symbol.
What are the Nitropolis bonus features?
Three to six scatters award 10, 15, 20 or 25 free spins, and scatters in the round add more. Before the bonus starts, one symbol is chosen to pay as a scatter anywhere on the reels when three or more land.
During free spins, any Nitro Reel that lands sticks in place for the rest of the round. That gradual build-up of sticky Nitro Reels is what pushes the ways count toward its maximum and gives the game its 10,000x ceiling.
Is Nitropolis worth playing? RTP and volatility explained
The listed RTP is 96.1%. ELK Studios publishes more than one RTP setting for its games, so a casino may run a lower version than the standard figure. The game's info screen shows the exact value at your casino.
Volatility is medium-high to high depending on the source. Respins give the base game some life, but the large wins rely on sticky Nitro Reels building up in free spins. ELK also offers bet strategies in many of its games, which can change how your stake is spread.
Nitropolis started a long series, and later entries changed the RTP and max win. Make sure the game you open is the original, since sequels such as Nitropolis 3 and 4 list lower RTP settings and higher caps. The figures on this page apply only to the first game.
Tips before you play Nitropolis
- Check the RTP in the info screen, since several settings exist.
- Try the demo to see how often Nitro Reels and respins appear.
- Leave room in your budget for long gaps between free spins.
- Read the bet strategy options before switching them on.