Nitropolis Slot Franchise by Elk Studios
- 6 reels, 4 rows, 4096 ways to win (up to 85,155,840 with Nitro Reels)
- Nitro Reels contain 4-12 identical symbols and trigger respins
- Symbol upgrades, winning respins, second chance spins
- Free spins with locked Nitro Reels
- Max win: 10,000x
- Adds a Nitro Booster feature reel above main reels
- Nitro Booster modifies Nitro Reels with wilds, premiums, upgrades, etc.
- Both ways pays introduced
- Super free spins mode
- Max win remains 10,000x
- 6 reels, starts with 4 rows (4096 ways) but can expand up to 8 rows (262,144 ways)
- Avalanche wins – winning symbols explode and are replaced
- Big 2×2 and 3×3 symbols
- Free spins with increasing safety level (minimum rows) on each win
- Super free spins with 8 rows and both ways pays
- Max win increased to 50,000x
- 6 reels, 4-8 rows, 4096-262,144 ways
- Avalanche wins and big symbols like Nitropolis 3
- Nitro Multipliers boost wins
- Free spins with sticky Nitro Reels
- Super free spins with max rows and both ways active
- Max win remains 50,000x
- 5 reels, 4 rows, 288 ways to win
- Nitro Reels can cover up to 12 symbol positions
- NPD Holding Cell feature locks and holds chosen symbols
- Nitro Booster side reel triggers 11 modifiers including Max Rows (8 rows), Both Ways, respins, Boss Battle
- Free spins with locked Nitro Reels and increasing safety level
- Super Bonus Game with Max Rows, Both Ways, NPD Holding Cell on every spin
- Max win remains 50,000x
The Battle of Nitropolis series (2024) focuses on the four animal gangs from the original games:
- 6×6 grid, 262,144 ways
- Nitro Reels, Nitro Match, Nitro Wild, Nitro Upgrade
- TNT and Big Coin symbols
- Assassin Spins – collect coins for big wins
- Free spins and super free spins
- Unique gameplay – rat drives around infinite grid collecting symbols
- 4 vehicle colors, collect symbols matching vehicle color
- Coins, TNT, Nitro Fuel affect gameplay
- Free spins and super free spins
- 6 reels, 4 rows, 20 paylines
- Nitro Wild Reels substitute for other symbols
- Nitro Feature Box triggers modifiers
- Dirty Wilds and Nitro Raffle features
- Free spins and super free spins
- 6×6 grid, connecting paylines
- Nitro Reels in 4×4 center can upgrade
- 4 Feature Screens trigger random modifiers
- Nitro Insane adds Nitro Reels before spin ends
- Free spins with sticky Nitro Reels
What makes Nitropolis slots so popular
Unique Post-Apocalyptic Theme
The Nitropolis games are set in a dystopian future where animal gangs battle for control of a precious resource called Nitro. This original storyline with gritty characters like the Dirty Dawgs, Gritty Kitties, Pug Thugs and Rogue Rats makes the series stand out.The atmospheric visuals depict a neon-lit, industrial cityscape that immerses players in this post-apocalyptic world. The high-energy soundtrack also adds to the immersive experience
Nitro Reels Mechanic
The signature feature of the Nitropolis series is the Nitro Reels. These special oversized symbols can contain anywhere from 4 to 12 symbols and cover multiple positions on the reels.When Nitro Reels are part of a winning combination, they lock in place and trigger a respin of the other reels. This can lead to more wins and even more Nitro Reels locking in place for some big payouts. Nitro Reels also increase the ways to win. For example, the first Nitropolis slot starts with 4096 ways but can expand up to a massive 85,155,840 ways to win with the help of the Nitro Reels.
Expanding Reels and Ways to Win
Building on the Nitro Reels, the sequels introduced mechanics that expand the game reels and exponentially increase the ways to win on each spin:
- Nitropolis 2 added the Nitro Booster reel above the main reels that can upgrade Nitro Reels with wilds, premium symbols, etc. It also introduced wins that pay both left-to-right and right-to-left
- Nitropolis 3 starts with 4096 ways but the reels can grow up to 8 rows tall for 262,144 ways. Winning symbols also explode and are replaced in an Avalanche feature.
- Nitropolis 4 retained the Avalanche wins and reel expansions from the previous game while adding Nitro Multipliers to boost payouts
Bonus Features and Win Potential
The Nitropolis games are packed with bonus features that ramp up the excitement and win potential. Free spins are triggered by scatter symbols, with the Nitro Reels locked in place for the duration of the bonus.Some games have a Super Free Spins mode that incorporates the max number of rows and pays both ways for even bigger wins. The max win can go as high as 50,000x the bet in the later installments. The games also utilize special symbols and random features like Respins, Wilds, Symbol Upgrades, and Nitro Multipliers to spice up the gameplay.
The combination of a memorable theme, the innovative and highly engaging Nitro Reels and expanding reels mechanics, a multitude of bonus features, and the chance for huge payouts makes the Nitropolis series a big hit with players seeking a thrilling, high volatility slots experience.T he high production values in the artwork, animations and sound also contribute to the popularity of these games. With each new sequel, ELK Studios has managed to retain the core elements that made the original Nitropolis so much fun while expanding on the gameplay in creative ways to keep players excited for the next installment in the series.
