ELK StudiosELK Studios

    Nitropolis 3

    9.0/10
    Release March 2022· Updated June 2026

    ELK Studios' post-apocalyptic slot (March 2022). 4,096 Bothway ways, X-iter Bonus Buy from 2x to 500x. BetsRank score: 9.0/10.

    RTP
    95%
    Volatility
    High
    Max Win
    50 000x
    Grid
    6x4 grid (expandable to 6x8)
    Bonus Buy
    Yes
    Avalanche wins (grid expansion +4 rows)Mega symbols + wilds 4x4Nitro Reels et Big Nitro Reels (2x3)5 modifier symbols (Redrop, Both Ways, Nitro Match, Nitro Upgrade, Nitro Wild)Free Spins avec sticky Nitro ReelsSuper bonus mode (grille max + Win Both Ways)Hit frequency 19,2%X-iter achat bonus 2x à 500x
    Nitropolis 3
    🎰

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    BetsRank Verdict

    Hands-on testing by Alexandre Dubois — bonus tested, multiple sessions

    Released on 25 March 2022, Nitropolis 3 is the most acclaimed instalment in ELK Studios' post-apocalyptic franchise. It uses a 6x4 format that expands to 6x8, 4,096 Bothway ways (left-to-right AND right-to-left), 95% RTP, high volatility, a 50,000x max win, and a 19.2% hit frequency. Signature mechanics: Avalanche wins with progressive grid expansion (+4 rows max), Mega symbols and wilds up to 4x4, and the series trademark: Nitro Reels and Big Nitro Reels (special 2x3 zones that guarantee modifier hits). 5 modifier symbols: Redrop, Both Ways, Nitro Match, Nitro Upgrade, Nitro Wild. Free Spins with persistent sticky Nitro Reels and Super Bonus mode (max grid + Win Both Ways permanently active). X-iter Bonus Buy from 2x to 500x stake — maximum flexibility.

    Strengths

    • +Solid 50,000x max win
    • +4,096 Bothway ways (left AND right)
    • +X-iter Bonus Buy from 2x to 500x — great flexibility
    • +Spectacular 4x4 Mega symbols and wilds
    • +Cult post-apocalyptic universe

    To consider

    • 95% RTP is modest versus the competition (96%+)
    • Bonus Buy is banned in the UK
    • Brutally high volatility
    • Free Spins are hard to trigger

    About Nitropolis 3

    Released on 25 March 2022, Nitropolis 3 is the most acclaimed instalment in ELK Studios' post-apocalyptic franchise. The setting mixes a beach backdrop with animal characters in a devastated world. It uses a 6x4 format that expands to 6x8 via avalanches, 4,096 Bothway ways (left-to-right and right-to-left combinations recognised simultaneously), 95% RTP, high volatility, a 50,000x stake max win, and a 19.2% hit frequency. Signature mechanics: Avalanche wins with progressive grid expansion (+4 rows max over the course of a cascade session), Mega symbols and wilds up to 4x4 (spectacular on the extended grid), and the franchise's trademark: Nitro Reels and Big Nitro Reels (special 2x3 zones that guarantee modifier hits every spin they appear on). 5 modifier symbols: Redrop (redrops symbols), Both Ways (activates win-both-ways), Nitro Match (matches modifiers together), Nitro Upgrade (upgrades low-tier symbols), Nitro Wild (extended wilds). Free Spins come with persistent sticky Nitro Reels throughout the bonus, plus Super Bonus mode (max grid + Win Both Ways permanently active). X-iter Bonus Buy via a dropdown menu from 2x to 500x stake — maximum flexibility.

    Key mechanics

    • 6x4 format expandable to 6x8
    • 4,096 Bothway ways
    • Avalanche wins (grid expansion +4 rows)
    • 4x4 Mega symbols and wilds
    • Nitro Reels + Big Nitro Reels
    • 5 modifier symbols
    • X-iter Bonus Buy from 2x to 500x
    💰 Bonus Buy: X-iter menu: 2x to 500x stake

    Nitropolis 3 FAQ

    What is the RTP of Nitropolis 3?

    The official RTP is 95% (modest versus the 96% standard, but common for ELK titles).

    It can be adjusted by the operator — check the in-game 'i' menu to confirm.

    Nitropolis 3 or Nitropolis 4?

    Nitropolis 3 (2022) remains many players' favourite for its pacing and the highly flexible 2x-500x X-iter.

    Nitropolis 4 (2024) goes further with a higher max win and a more elaborate visual universe. Both share the Bothway mechanic.

    How does Bothway work in Nitropolis 3?

    Winning combinations are recognised both left-to-right AND right-to-left.

    This doubles the number of potential hits — 4,096 ways on each side.

    Is Nitropolis 3 available at online casinos?

    Yes, at most top-ranked crypto and anonymous casinos that carry ELK Studios titles.

    Note: Bonus Buy is banned in the UK.

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    Alexandre Dubois
    Alexandre Dubois

    Online Casino & Bonus Expert

    Last updated: 6/27/2026

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    Slot sheet last updated on · Sources: slotcatalog.com, official provider sites, BetsRank hands-on testing