Octo Attack Demo & review

In Octo Attack every cluster win leaves an Ink Stain where it stood, and when the Eye of Otto lands, its Tenta-Grab fills every stain with one symbol picked from the grid. That one move decides the game, in the base spins and in both free-spins rounds. It suits bonus buyers first, because Hacksaw sells both rounds and two FeatureSpins modes, and cluster players who want something to happen after the cascades stop.

How Octo Attack works

Clusters of five or more matching symbols pay anywhere on a 6x5 grid. Winning symbols drop out and new ones fall in, so one spin can chain several wins. The Wild substitutes for every paying symbol and can land as a Wild Multiplier worth 1x to 10x. Those values add up: two Wild Multipliers in one win are summed, not multiplied together.

Clusters of Wilds pay on their own: 26 to 29 of them pay 600x the bet. Small clusters pay little. A five-symbol cluster of low symbols returns a tenth of the bet, so the grab has to supply the size.

Ink Stains and the Tenta-Grab: what stays on the grid

Every winning position is marked with an Ink Stain once its symbols are removed. In the base game the stains clear at the end of each spin, so they only matter if the Eye of Otto lands on the same spin. When it does, the Tenta-Grab picks one random symbol on the grid and replaces every stained position, and the Eye itself, with that symbol. A long cascade leaves a big stained area, and the grab turns it into one block of a single symbol.

What it grabs is luck. It can take a low symbol, a high symbol, an FS scatter, a Wild or a Wild Multiplier. A grabbed Wild fills the stains with Wilds or Wild Multipliers of higher or lower values than the one chosen.

Spin 79 after the first cascade: the winning positions marked with Ink Stains. FluxPlays demo test, 3 November 2026.

On spin 79 a cascade left a block of stains across the middle reels, the Eye of Otto landed, and the grab took a spray can. The stained positions turned into spray cans, and the spin paid $25.50, our best base win.

Spin 79: the Tenta-Grab takes a spray can to fill the stains. FluxPlays demo test, 3 November 2026.

Spin 79 settled: a win of 25.50 at a 1.00 bet. FluxPlays demo test, 3 November 2026.

Free spins: how the two bonuses trigger

Two kinds of FS scatter open two different rounds. Normal FS symbols open Eighth Arm Is The Charm, epic FS symbols open Give Me Eight!, and either needs three or more landing together in the base game. The number of FS symbols that trigger the round sets the number of free spins. Each bought round we played gave 10.

Eighth Arm Is The Charm

The change from the base game is one rule: Ink Stains stay on the grid between free spins until the Tenta-Grab uses them. So the stained area keeps growing spin after spin, and a late Eye of Otto can fill a much bigger block than it ever could in the base game. Every three normal FS symbols that land together during the round add one spin.

Give Me Eight!

Give Me Eight! keeps the stains between spins and narrows the grab. The Tenta-Grab here can only take a Wild, a Wild Multiplier or an FS symbol, never a paying symbol. Every grab therefore turns the stained area into Wilds or extra spins. For us this is the round the game is built around, because the weakest grab in the base game simply cannot happen here. Three epic FS symbols landing together add one spin.

Bonus buy and FeatureSpins: prices and what you get

Octo Attack sells two FeatureSpins modes, which charge on every spin for as long as they are switched on, and two bonus buys, which charge once for a whole round.

Tentacular is the Tenta-Grab sold on its own: a guaranteed win plus a guaranteed Eye of Otto on every spin, with the bonus switched off.

The buy panel at a 1.00 bet, every card labelled Volatility: High. FluxPlays demo test, 3 November 2026.

RTP, volatility and max win

The base game runs at 96.27% in the rules, from ten billion simulated rounds, and the buys sit within a few hundredths of it. The demo shows one version. Every card in the buy menu is labelled High volatility. The ceiling, 10,000x the bet, applies in every game mode, base spins included.

Our Octo Attack demo test

The grab carried the base game. It fired on 10 of the base spins, and those spins made our three best base wins. The other winning spins were small cascades. Neither bonus came from the scatters, so both rounds on the card were bought.

The bought rounds showed the difference between the two grabs. Eighth Arm Is The Charm returned a little over half its price. In Give Me Eight! the grab took a Wild on free spin 3 and filled the whole stained area with Wilds, and that one spin paid $1,425.00. Tentacular paid on every spin, as promised. A session this size shows how the grab works. It says little about Octo Attack's long-run return.

Give Me Eight! free spin 3, mid-spin: Wilds fill the stained area and the first cascade pays 125.00. FluxPlays demo test, 3 November 2026.

The Give Me Eight! round settled: 1,426.90 from 10 free spins. FluxPlays demo test, 3 November 2026.

Is Octo Attack worth playing?

For the Give Me Eight! round, yes. Octo Attack's base game is a cluster game where the Eye of Otto is the only real event, and most spins end before it arrives. The epic round fixes that by stripping the paying symbols out of the grab, so every Tenta-Grab becomes Wilds or more spins on a grid whose stains never clear.

Le Bandit is the pick if you want the same 6x5 cluster idea with marked positions that a Rainbow turns into coins and pots, at Medium volatility. Choose Octo Attack if you would rather have every marked square become one symbol at once, Wilds included.

In the demo, run ten Tentacular FeatureSpins first. Every spin brings an Eye of Otto, so it is the quickest way to watch the stains and the grab work before you spend on a round.