Nitropolis 4

After Nitropolis , Nitropolis 2 , Nitropolis 3 , supplier ELK Studios continues to enrich the Nitropolis range by offering players a fourth version of the hit production. The Nitropolis 4 casino game provides a format layout of 6 reels, 4 to 8 rows and up to 4,096 ways to win. The game contains different features including the avalanche system, mega symbols, multiplier and modifiers.

On the free online slot machine Nitropolis 4, ELK Studios provides users with an explosive gaming experience leading to substantial rewards. The graphic effects resemble the developer's previous three productions featuring cats, puppies, and rats. These creatures find themselves in the heart of a toxic and ruined city. The soundtrack sets the rhythm of the session and actively contributes to the immersion in the game. Throughout the session, players can hear different types of beeps, voiceovers, and typical industrial tones. All these elements are infused with the recognizable chaos of the Nitro style. On the reels, several symbols are available, including classic royal cards, four gang logos, and four character icons.

Upon activating the Two Ways feature, Nitropolis 4 awards payments from right to left, starting from the first and sixth reel. Gathering identical symbols on the screen allows for specific rewards. The amount varies from 0.3 times the bet for card ranks, 0.8 to 1 times the bet on the logo side, and 1.24 to 3 times the bet for premium wins. The wild symbol is also present and appears on all six reels of the grid. These wilds substitute for other symbols and have the same value as the highest paying symbol in the game.

Playable on all devices, Nitropolis 4 offers a range of bets from 0.20 to 50 euros per spin. With high volatility, the game offers players big prizes that can reach up to 50,000 times the bet. Regarding the redistribution rate, it is 94%.

How the game works

The Nitropolis 4 slot machine starts with avalanches by removing winning symbols and replacing them with new ones. An additional reel is added at the top, leading to a maximum of 8 rows. The process continues until no new winning combination occurs.

During spins, super symbols of size 2×2 or mega symbols of size 3×3 may appear on any rotation. Additionally, Nitro Reels can be positioned on two grid slots and occur on any reel. Each Nitro Reel contains 4, 6, 8, 10, or 12 standard paying symbols. Big Nitro reels completely cover six positions and include 2, 3, 4, 5, or 6 payment symbols of size 2×2.

Speaking of Nitro multipliers, they occupy two positions even though they count as a single symbol. As usual, they multiply the total winnings and have values of ×4, ×6, ×8, ×10 or ×12.

As for the Nitro Booster modifiers, the online slot offers players 8 possibilities, each with the ability to increase winnings on the counter. The list consists of the Redrop formula, the random Nitro Appear, the Nitro Wild, the Nitro Match, and the Nitro upgrade that enhances the value of a Nitro reel. There is also the Max Rows function revealing a grid of a total of 8 rows and the Garbage Collect leading to the triggering of an avalanche.

Ensuite, Nitropolis 4 features a bonus game where landing 3, 4, 5 or 6 bonus symbols awards 8, 12, 16 or 20 free spins. During the Free Spins, the Nitro reels are sticky until the end of the feature. Additionally, each win increases the security level from 1 to 8 lines maximum. When one of the triggering symbols is a Super Bonus symbol, the Super Bonus Game is triggered. On this spin, the Max Rows and Both Ways option remains active.

Finally, the X-iter function is obviously available, including five distinct modes. Each feature displays a specific amount depending on the granted advantages. Overall, the Bonus Hunt, Nitro Booster, Super Spin, Bonus, and Super Bonus options cost 2×, 10×, 25×, 100×, and 500× the bet, respectively. The player's choice depends on their approach to the game and their budget.

In conclusion, the online slot machine Nitropolis 4 from ELK Studios retains some features that have made this series successful. Between the avalanches, the expanding reels, the security level, the Nitro Reels, and the modifiers, players can pocket a jackpot of up to 50,000 times the bet.