Octo Attack Slot Review

The Octo Attack Slot Game

Octo Attack drops you into a grim city smothered in trash, dumpsters, and waste, with Otto the Octopus glowering beside a 6 reel, 5 row grid. Wins use Cluster Pays, so five or more matching symbols touching horizontally or vertically will do the job. Bets run from 0.10 to 100 per spin, which suits low stakes testing as well as those sessions where I feel like pushing the stake a bit.

On paper Octo Attack sits at 96.27% RTP with medium volatility rated three out of five, and a 10,000x max win hanging over the whole thing. In practice I found the 33.96% hit rate very noticeable, with wins landing around every three spins and clusters often chaining through cascades. It feels busy without being exhausting, especially once Ink Stains start to coat the grid and tease the Tenta Grab triggers.

Symbols and Payouts in Octo Attack

Symbols and payouts in Octo Attack follow classic Hacksaw cluster logic. The low pay graffiti icons are the hook, lightning bolt, speech bubble, cube, and broken heart, all in monochrome. Hit at least five in a cluster and you start at around 0.1x the bet, then step up through several tiers until 26 or more matching lows can reach 100x, helped by the cascading mechanic that keeps fresh tiles dropping in.

The high symbols in Octo Attack bring a shot of colour. Here you get the fish, beverage can, mushroom, ice cream, and the smiling shark. Values scale hard with size; mid sized clusters might sit in the 0.3x to 5x band, but once you reach 13 or more connected symbols you are looking at 15x to 100x, and full 26+ blocks of sharks can go all the way up to 500x.

Wilds in Octo Attack show as a big W and can arrive with adding multipliers from x1 to x10. They substitute for all basic symbols, so a couple of multiplier wilds dropped into the right cluster can change a modest screen into something quite serious. When Tenta Grab copies a wild or wild multiplier across all Ink Stains, you start to see why this paytable supports the 10,000x headline.

Symbols and Paytable

Symbol	Quantity	Payout
	26+	x500
	13+	x100
	11+	x30
	6	x1.5
	5	x1
	26+	x250
	13+	x50
	11+	x15
	6	x0.7
	5	x0.5
	26+	x250
	13+	x50
	11+	x15
	6	x0.7
	5	x0.5
	26+	x150
	13+	x25
	11+	x7.5
	6	x0.4
	5	x0.3
	26+	x150
	13+	x25
	11+	x7.5
	6	x0.4
	5	x0.3
	26+	x100
	13+	x15
	11+	x5
	6	x0.2
	5	x0.1
	26+	x100
	13+	x15
	11+	x5
	6	x0.2
	5	x0.1
	26+	x100
	13+	x15
	11+	x5
	6	x0.2
	5	x0.1
	26+	x100
	13+	x15
	11+	x5
	6	x0.2
	5	x0.1
	26+	x100
	13+	x15
	11+	x5
	6	x0.2
	5	x0.1
	Scatter
	Wild

Octo Attack Slot Bonus Features

Octo Attack slot bonus features revolve around cascades, Ink Stains, and Otto’s eye. Every winning cluster explodes, pays, then leaves Ink Stains on those positions while new symbols fall from above. If an Eye of Otto symbol lands while Ink Stains are present, the Tenta Grab mechanic wakes up, grabs one random symbol on the grid, and replaces every stained spot plus itself with that chosen icon.

This grab can hit low pays, premiums, regular FS scatters, wilds, or wild multipliers. Free spins come in two flavours. Eighth Arm Is The Charm triggers from three or more normal FS symbols, with Ink Stains persisting between spins until Tenta Grab uses them, and retriggers adding +1 spin per three scatters. Give Me Eight works the same way, but Otto only grabs wilds, wild multipliers, or FS symbols, so the swings climb fast.

Octo Attack also carries a full Bonus Buy menu for when I get impatient. Bonushunt FeatureSpins cost 3x the bet and make bonuses five times more likely, while Tentacular FeatureSpins at 50x guarantee at least one win plus an Eye of Otto. Paying 100x or 300x drops you straight into Eighth Arm Is The Charm or Give Me Eight, with far rougher swings but far bigger ceiling.

Bonus Buy Feature

BonusHunt FeatureSpins
Feature Cost:	x3 Bet
RTP:	-
Volatility:	High
Tentacular FeatureSpins
Feature Cost:	x50 Bet
RTP:	-
Volatility:	High
Eighth Arm Is The Charm
Feature Cost:	x100 Bet
RTP:	-
Volatility:	High
Give Me Eight
Feature Cost:	x300 Bet
RTP:	-
Volatility:	High

How to Win at Octo Attack Slot

How to win at Octo Attack slot comes down to getting a feel for its flow rather than chasing every feature buy. I like to start on smaller stakes, watch how often Ink Stains build up, and track how frequently Eye of Otto symbols appear. Medium volatility and cluster pays favour steady bankroll play, so I only step into Give Me Eight or Tentacular FeatureSpins when my balance has already had a decent lift from base game clusters.

Octo Attack Slot RTP & Volatility

Octo Attack slot RTP and volatility sit in a range rather than a single fixed figure. The theoretical top setting is 96.27%, but there are lower configurations down to around 88.28%, so the version you play matters over long sessions. Hacksaw rates volatility as medium, roughly three out of five, and real world stats from millions of recorded spins show a hit rate close to 33.95%, or roughly one win in three spins.

The 10,000x max win in Octo Attack feels ambitious yet not fantasy level. A long term simulator run clocked an actual top hit of 9,526.6x, with bonuses arriving about once every 290 spins and wins of 20x or more landing roughly once in a hundred rounds. In my sessions that translated into stretches of small, frequent clusters, punctuated by the odd explosive Tenta Grab screen during free spins.

The Final Thoughts on Octo Attack

My final thoughts on Octo Attack are that it is one of Hacksaw’s more inventive medium volatility efforts. The monochrome trash filled city and moody soundtrack give it character, while the Tenta Grab mechanic, Ink Stains, and dual free spins modes keep the grid feeling alive. Feature buys are pricey and the look will divide opinion, but when Otto floods the reels with multiplier wilds the game can be a riot.

Screenshots