Hacksaw GamingHacksaw Gaming

    Stack'Em

    9.0/10
    Release May 2021· Updated June 2026

    Hacksaw Gaming's cult cluster-pays hit (May 2021). Stacked multipliers up to x30, max win 10,000x, Bonus Buy 129x. BetsRank score: 9.0/10.

    RTP
    96.2%
    Volatility
    Very High
    Max Win
    10 000x
    Grid
    5x6
    Bonus Buy
    Yes
    Cluster PaysCascading ReelsStacked Multipliers x6 par rouleauMystery SymbolBonusHunt FeatureSpins™
    Stack'Em
    🎰

    Where to play Stack'Em — Top 3 casinos

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    9.0

    BetsRank Verdict

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

    A historic Hacksaw hit from May 2021, Stack'Em set the standard for modern cluster pays with a stacked-multiplier mechanic (up to x6 per reel, x30 max combined) rarely matched elsewhere in the market. 5x6 grid, cluster pays with cascading reels, max win 10,000x, volatility 5/5. Free spins trigger on 3 scatters (5 initial spins) with a progressive global multiplier that never resets between cascades. Bonus Buy available at 129x stake. Mystery 'X' symbol (bonus only) that must land adjacent to a cluster to boost its multiplier. A streaming-culture favourite since 2021.

    Strengths

    • +Signature stacked-multiplier cluster pays mechanic
    • +Progressive global multiplier in bonus that never resets
    • +Accessible Bonus Buy (129x stake)
    • +A streaming hit since 2021 — active community
    • +Cascading reels plus mystery 'X' symbol for big wins

    To consider

    • −5/5 volatility — the base game is extremely dry
    • −Natural Free Spins trigger is rare (3 scatters)
    • −Degraded RTP versions possible depending on the casino (check in-game)
    • −Only 5 initial spins — short versus the 10-spin standard

    About Stack'Em

    Released on 14 May 2021, Stack'Em quickly became one of Hacksaw's most-played slots within the streaming community. 5x6 grid in cluster pays format with cascading reels — every winning cluster disappears, dropping new symbols in. The signature feature: stacked symbols generate per-reel multipliers (up to x6 each) that combine — a theoretical maximum of x30 across the 5 reels. Free spins trigger on 3 scatters (5 initial spins) with a progressive global multiplier that never resets between cascades. A mystery 'X' symbol (bonus only) must land adjacent to a cluster to boost its multiplier. Bonus Buy available at 129x stake.

    Key mechanics

    • ▸Cluster pays on a 5x6 grid plus cascading reels
    • ▸Stacked per-reel multipliers (up to x6 each, x30 max combined)
    • ▸3 scatters = 5 free spins with a progressive global multiplier (never resets)
    • ▸Mystery 'X' symbol in bonus — boosts an adjacent cluster
    • ▸Mystery symbol adds free spins or boosts multipliers (x2-x5)
    • ▸Bonus Buy at 129x stake (identical 96.20% RTP)
    • ▸Max win 10,000x — base game reaches up to 6,000x
    💰 Bonus Buy: 129x stake (Free Spins)

    ❓Stack'Em FAQ

    What is the RTP of Stack'Em?▾

    The official high-RTP version is 96.

    20%. Degraded versions may be served depending on the casino. Always check via the in-game 'i' button before playing.

    Stack'Em or Hop'N'Pop — which one to choose?▾

    Both are 2021 Hacksaw cluster pays titles — it comes down to mechanic preference.

    Stack'Em (5x6) uses per-reel stacked multipliers, a more tactical feel. Hop'N'Pop (7x7) has a bigger grid and a higher max win (12,500x vs 10,000x). To try Hacksaw's cluster pays format, either works — pick based on theme (forest vs fruit farm).

    Is the 129x Bonus Buy worth it?▾

    The Bonus Buy RTP matches the base game at 96.

    20%. Variance is enormous — the progressive global multiplier makes every buy potentially explosive. Recommended: budget at least 10 consecutive buys to absorb the variance.

    Is Stack'Em available at online casinos?▾

    Yes, at the majority of top-rated crypto-friendly casinos in BetsRank's rankings that carry Hacksaw Gaming titles.

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    Try the official demo on Hacksaw Gaming's site
    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