Octo Attack

Octo Attack Slot Review

Octo Attack is not your average underwater adventure. Hacksaw Gaming has unleashed an octopus with attitude and mechanics to match. Released on September 5, 2024, this slot combines cluster pays on a 6×5 grid with a unique Tenta-Grab mechanic that’ll have you thinking about strategy as much as spinning. We’ve put this game through its paces, and we’re pleased to report that Octo Attack delivers on both creativity and playability. Whether you’re after the 96.27% RTP stability or the tantalising 10,000x bet maximum win, Octo Attack brings something genuinely different to the table.

Base Game & Features

At its core, Octo Attack operates on a 6 reels by 5 rows grid using cluster pays rather than traditional paylines. This means you’ll need five or more adjacent matching symbols to trigger a win. The bet range runs from £0.10 to £100, giving both cautious players and high-rollers plenty of flexibility. The medium volatility (3 out of 5) keeps wins reasonably frequent, with a 33.96% hit frequency creating that satisfying balance between extended play sessions and occasional bigger payouts.

The real star of the base game is the Ink Stains feature combined with Wild Multipliers. When winning positions land, they become marked with Ink Stains. These don’t disappear immediately—they persist until the Eye of Otto symbol lands and activates the signature Tenta-Grab mechanic. When Tenta-Grab fires, Otto’s eye grabs one random symbol from the grid and replaces both the Ink Stained positions and itself with that grabbed symbol. This creates potential for significant cascading wins as symbols shift and recombine.

The Wild Multipliers add another layer of strategy. These aren’t standard wilds—they carry multipliers ranging from 1x to 10x. When multiple Wilds land in a cluster, their multipliers are additive, meaning you could see truly impressive payouts when the multipliers stack up alongside your other winning symbols.

Bonus Features

Free Spins Modes

Octo Attack offers two distinct free spins bonus rounds, each triggered by different scatter symbols. Land three or more FS scatter symbols during the base game, and you’ll enter one of these modes. The number of free spins you receive matches the number of scatters that triggered the feature—simple and fair.

Eighth Arm Is The Charm (triggered by red FS symbols) is the standard free spins mode. It delivers solid win opportunities with the Tenta-Grab mechanic remaining active throughout.

Give Me Eight (triggered by yellow FS symbols) is the premium mode—and it’s where things get genuinely interesting. In this round, Ink Stains coat the reels and persist until the Tenta-Grab mechanic uses them. Crucially, Tenta-Grab only grabs Wilds and FS symbols, never your pay symbols. This means you’re building Ink Stain positions across multiple spins without risk of them being cleared by the mechanic, creating substantial win-building potential.

Feature Buy Options

If you’d rather skip the wait for scatter symbols, Octo Attack offers four feature buy options at varying price points:

• Bonushunt FeatureSpins (3x bet)—You’ll spin at a 5x higher likelihood of landing three or more scatter symbols.
• Tentacular FeatureSpins (50x bet)—Guaranteed winning combination plus one Eye of Otto symbol activation per spin.
• Eighth Arm (100x bet)—Direct entry to the standard free spins round.
• Give Me Eight (300x bet)—Jump straight into the premium free spins mode where the real magic happens.

Graphics & Theme

Hacksaw Gaming has created a genuinely immersive underwater setting centred on Otto, an octopus with considerable personality. The visual presentation leans toward darker colour palettes that contrast beautifully with neon vibrancy, creating an atmospheric experience that feels both playful and slightly menacing. The soundtrack complements this perfectly—it’s suspenseful and engaging without becoming repetitive during longer sessions.

This is creative game design at work. Rather than defaulting to typical tropical underwater clichés, Hacksaw Gaming has delivered something with genuine artistic style. The animations are smooth, symbol clarity is excellent, and the overall presentation feels premium compared to generic slot offerings.

Quick Verdict

• Overall Verdict: 4.5/5
• Octo Attack stands out as a genuinely inventive Hacksaw Gaming creation. The Tenta-Grab mechanic isn’t just window dressing—it fundamentally changes how you approach the game, particularly in the Give Me Eight free spins round where strategy meets luck beautifully. The 96.27% RTP paired with medium volatility and a 10,000x maximum win creates an attractive package for players seeking balanced risk-reward gameplay. Graphics and sound design demonstrate real artistic effort. The main consideration is that feature buys start at 300x for the premium Give Me Eight mode, which might feel steep for casual sessions. Still, if you enjoy creative mechanics and aren’t put off by medium volatility, Octo Attack delivers excellent entertainment value.

Frequently Asked Questions

• What is the RTP of Octo Attack?

  The RTP of Octo Attack is 96.27%, making it a solid choice for players seeking reliable payout rates. Note that the RTP can vary slightly depending on bonus buy options, with some configurations dropping to 88.28%.
• What is the volatility of Octo Attack?

  Octo Attack is classified as medium-volatility (3 out of 5). This means you’ll experience a well-balanced mix of frequent smaller wins and genuine opportunities for more significant payouts. The 33.96% hit frequency supports this balanced profile.
• What is the maximum win in Octo Attack?

  The maximum win available in Octo Attack is 10,000x your bet. This ceiling applies across all game modes—base game, standard free spins, and the premium Give Me Eight round—making the top prize genuinely achievable through your gameplay.
• How does the Tenta-Grab mechanic work?

  When the Eye of Otto symbol lands on the grid and Ink Stains are present, Tenta-Grab activates. The Eye randomly selects one symbol type and replaces all Ink Stained positions (plus itself) with that grabbed symbol. This can grab low-paying symbols, high-paying symbols, Scatters, Wilds, or Wild Multipliers, creating dynamic win opportunities that change across spins.
• How do you trigger free spins in Octo Attack?

  To activate the bonus feature, land at least three FS scatter symbols at the same time during base game play. The number of awarded free spins equals the number of scatter symbols that triggered the bonus—so three scatters equals three free spins, five scatters equals five free spins, and so on.
• What are the two free spins modes?

  Octo Attack features two different free spins rounds. Eighth Arm Is The Charm (triggered by red FS symbols) is the standard mode. Give Me Eight (triggered by yellow FS symbols) is the premium mode where Ink Stains persist until Tenta-Grab uses them, and the mechanic only grabs Wilds and Scatters, creating enhanced win-building potential.