What Is Octo Attack?

Earth is under attack by eight-legged invaders emerging from the Cursed Seas, and in Hacksaw Gaming's Octo Attack, your ally in this dystopian conflict is Otto the Octopus, a vibrant hero in a genuinely monochrome world of ruin. The game grid overlays a deserted, urban-style street, and other than Otto himself and the odd game symbol, there's virtually no theming directed at the ocean whatsoever — typically Hacksaw, favoring an unexpected urban battleground over the usual tropical underwater clichés.

The grid runs on a 6-reel, 5-row layout using cluster pays, needing 5 or more adjacent matching symbols connected vertically or horizontally to trigger a win. Five-of-a-kind clusters are worth 0.1x to 1x the bet, while clusters of 26 or more pay a substantial 100x to 500x.

Tenta-Grab and Ink Stains

The Eye of Otto symbol activates the Tenta-Grab mechanic, an innovative feature that isn't just window dressing — Otto's tentacles genuinely grab symbols and replicate them across the grid, creating potential avalanches of high-value symbols or Wilds. This fundamentally changes how players approach the game, particularly since strategy meets luck beautifully once Tenta-Grab starts chaining across a cascading sequence.

Eight Arm Is The Charm and Give Me Eight! Free Spins

Two distinct free spins modes give Octo Attack real structural depth: Eight Arm Is The Charm forms the entry tier, while Give Me Eight! Free Spins represents the stronger mode, carrying persistent Ink Stains that stay active across the round rather than resetting each spin — a genuinely valuable structural advantage that gives a hot sequence considerably more staying power.

Multiplier Wild Symbols carry values up to 10x throughout regular play, and the Feature Buy for Give Me Eight! pushes the effective RTP to 96.28% for players who'd rather skip the natural trigger.

RTP, Volatility and the Realistic Odds

Default RTP is 96.27%, rising to 96.31% depending on which bonus is purchased through the buy feature. Volatility is rated medium (3 out of 5), and hit frequency of 33.96% creates a satisfying balance between extended play sessions and consistent action — you'll see a win roughly every third spin, keeping the action moving without long dry spells.

The 10,000x max win is achieved through Tenta-Grab replications compounding during an especially strong Give Me Eight! sequence. Bets run $0.10 to $100 per spin.

Our Verdict

Octo Attack stands out as a genuinely inventive Hacksaw Gaming creation, and rather than defaulting to typical tropical underwater clichés, the studio has delivered something with real artistic style through its stark monochrome-and-neon urban battleground. The Tenta-Grab mechanic isn't just window dressing — it fundamentally changes strategic approach, particularly in the Give Me Eight! free spins round where persistent Ink Stains meet luck beautifully. The 96.27% RTP paired with medium volatility and a solid 33.96% hit frequency creates an attractive, well-balanced package for players seeking consistent risk-reward gameplay over extreme swings.

Where to play it

We recommend Gamdom for playing Octo Attack with real money: 15% Rakeback for 7 Days.