Title
Developer
Rating
RTP
94%
Daily
39.87%
Weekly
25.35%
Cold
Nitropolis 4 by ELK Studios is the wildest and most explosive chapter yet in the Nitropolis series. Set on a rusty abandoned oil rig, this high-octane 6-reel cluster slot delivers Nitro Reels, massive Mega Symbols, stacking multipliers, and a colossal maximum win of 50,000x your stake.
The game uses a dynamic 6-reel grid that can expand up to 8 rows, creating thousands of ways to win. Wins pay from left to right (or both ways when activated). Winning symbols explode via the Avalanche mechanic, allowing new symbols to tumble in for chain reactions. Bets range from 0.20 to 100.00 per spin.
The slot throws you onto a gritty, dystopian oil rig overrun by ELK’s chaotic animal gangs — Gritty Kitty, Rogue Rats, Pug Thugs, and Dirty Dawgs. Sergeant Nitro Wolf returns to keep some semblance of order. Sharp animations, industrial lighting, pulsing soundtrack, and explosive effects give the game a raw, high-energy feel.
Special reels that cover multiple positions and can contain 4–12 payout symbols (or 2–6 large symbols on Big Nitro Reels). These can be filled with Nitro Wilds or synced via Nitro Match for big guaranteed wins.
Stacked multipliers (up to 12x) that boost all wins on screen — devastating when combined with avalanches and Nitro Reels.
Random or triggered boosters that can activate:
Triggered by 3–6 Submarine Scatter symbols:
All Nitro Reels stay sticky during the bonus. The Super Bonus Game starts with maximum rows and Both Ways enabled from the very first spin for ultimate chaos and win potential. Retriggers are possible.
According to Roobet Casino Nitropolis 4 offers the following to players:
Nitropolis 4 takes the series to another level with its massive grid potential, Nitro Reels, stacking multipliers, and explosive Super Bonus Game. The combination of Mega Symbols, avalanches, and Nitro chaos creates some of ELK’s most thrilling and highest-paying moments. If you love high-volatility slots with huge win ceilings and non-stop action, Nitropolis 4 is pure mayhem on the reels.
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