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Nitropolis 4 is a recent slot from ELK Studios. Players rejoin the nitro groups in a game story. They first appeared in the 2020 game Nitropolis, where main groups were the Dirty Dawgs, Pug Thugs, Rouge Rats, and Gritty Kitties. They sought nitro fuel. Over time, this gas became less common, and group conflict grew. In Nitropolis 2, Sergeant Nitro Wolf appeared, aiming for stability. Removing crime from the streets proved hard. In the third release, Nitropolis 3, Mr. Nitro Wolf went hoping for peace. But soon, different groups adopted this plan and followed him, starting a new conflict.
The game look shows a future world. Players follow the nitro groups into the sea searching for items under the surface. Structures like offshore rigs appear behind the reels. Starting the bonus game takes players underwater. Players can play slot games like this on phones, tablets, and computers. Winning symbol sets form when 3 or more like symbols land on connected reels, left to right. This starts the Avalanche item.
Lower payout symbols are J, Q, K, and A. Landing 6 like symbols pays 0.3X the wager. Mid payout symbols are the emblems for the Red Rats, Pug Thugs, Gritty Cats, and Dirty Dawgs groups. 6 like symbols give 0.8X to 1X the wager. High payout symbols are the heads of these groups. 6 like symbols pay 1.25X to 3X the wager. A submarine is the scatter symbol. A super scatter symbol marked “Super” also appears. A sea mine is the wild symbol. During spins, large symbols up to 3×3 can land. For gameplay variety, Nitro Reels and Nitro Multipliers appear, increasing payouts. Checking a slot rating can offer player feedback on such features.
What is the max possible win in Nitropolis 4?
Max possible win is 50000 times the wager.
What items are available in Nitropolis 4?
Game items include: Wild Symbol, Avalanche, Big Symbols, Nitro Reels, Nitro Multiplier, Nitro Booster, Bonus Game, and X-iter.
The wild symbol aids in forming more winning sets by substituting for all symbols except scatters.
Landing a winning set starts the avalanche item. Symbols in the win vanish from reels, and new ones fall into place. Each avalanche adds a row. This lets rows on each reel grow up to eight, increasing possible winning sets. Nitro Multipliers and Nitro Reels in a winning set reactivate. The avalanche goes on while new wins form. The total win pays when new sets no longer form.
During reel spins, enlarged symbols 2×2 or 3×3 can land by chance. A 3×3 symbol equals nine standard symbols of its kind. These large symbols can be lower payout, mid payout, higher payout, or wild symbols.
Nitro Reels fill two symbol spots. They hold 4, 6, 8, 10, or 12 payout symbols at 1×1 size. Players can also get Big Nitro Reels, filling 6 symbol spots and holding 2, 3, 4, 5, or 6 payout symbols at 2×2 size. Nitro Reels may have super scatters, appearing only there. Each super scatter on a Nitro Reel counts as one 1×1 symbol.
This symbol fills two spots and boosts all wins seen. It counts as a 1×1 symbol. It can show with values 4X, 6X, 8X, 10X, or 12X. Its effect grows if several Nitro Multipliers land at once.
The game has 8 types of Nitro Boosters. These add items to the main reels. Here are their effects:
Respin = All scatters and Nitro Reels stay. Other symbols leave. Then, new symbols fill empty spots.
Both Ways = Wins form left to right and right to left.
Garbage Collect = Symbols picked by chance then removed. This starts the avalanche item.
Max Rows = Extends reels up to the limit of 8 rows.
Nitro Appear = A Nitro Reel of random size is placed on reels, replacing symbols where it lands.
Nitro Wild = An existing Nitro Reel gets filled with wild symbols. If no Nitro Reel is present, the item stays active until one appears or the bonus game ends.
Nitro Upgrade = Nitro Reels on one reel and near reels get better. More symbols or multipliers are added. If no Nitro Reel is present, the item stays active until one appears or the bonus game ends.
Nitro Match = An existing Nitro Reel matches a seen symbol. It then fills with that symbol type for a win. If a winning match cannot happen, the picked Nitro Reel matches a near one. If this too cannot happen, it matches the symbol with the highest value on near reels. If no Nitro Reel is present, the item stays active until one appears or the bonus game ends.
Landing 3 or more scatter symbols starts the bonus game. Based on the number of scatters landed (3, 4, 5, or 6), players get 8, 12, 16, or 20 free spins. More free spins are possible during the bonus game. The number of spins for scatters landing then matches the trigger amount. All landed Nitro Reels stay fixed until the bonus game ends. If the bonus game starts with one or more super scatter symbols, the super bonus game begins. This mode has Both Ways and Max Rows active.
Each free spin with a win adds 1 row to the safe level. The next free spin always starts with the row count reached in the safe level.
For quick entry to other options, the X-iter mode is usable. These choices are open:
2X (Bonus Hunt) = Spin with double chance of starting the bonus game.
10X (Nitro Booster) = Spin where the Nitro Booster, when active, gives 2 items.
25X (Super Spin) = Spin with Max Rows and Both Ways active.
100X (Bonus Game) = Start of the standard bonus game.
500X (Super Bonus Game) = Starts the improved bonus game with Both Ways and Max Rows active.
Rupert Latimer
