What is the main mechanic in Octo Attack?

The main mechanic is Tenta Grab. Winning positions leave Ink Stains, and when the Eye of Otto lands on a grid with Ink Stains, it grabs one random symbol and replaces all stained positions with that symbol.

How do Ink Stains work in Octo Attack?

Ink Stains appear on positions where winning symbols have been removed after a cluster win. In the base game, they reset between spins unless used by Tenta Grab. In Free Spins, they remain until Tenta Grab uses them.

What does the Eye of Otto symbol do?

The Eye of Otto activates Tenta Grab when it lands while Ink Stains are present. It chooses one symbol from the grid and copies it onto every Ink Stained position, while also replacing itself.

Can Tenta Grab copy Wild Multipliers?

Yes. Tenta Grab can grab Wild symbols and Wild Multiplier symbols. If that happens, the replaced Ink Stain positions can become Wild Multipliers.

How do Wild Multipliers work in Octo Attack?

Wilds substitute for paytable symbols, and some Wilds carry multiplier values from 1x to 10x. When they take part in a winning cluster, they can boost the payout of that win.

What makes Eighth Arm Is The Charm different from the base game?

Ink Stains persist between free spins until Tenta Grab uses them. This allows the feature to build more marked positions across the round instead of resetting them after every spin.

How do you trigger Give Me Eight Free Spins?

Give Me Eight is triggered by landing at least three epic FS scatter symbols. The number of epic FS symbols that trigger the feature decides how many free spins are awarded.

What is the difference between Give Me Eight and Eighth Arm Is The Charm?

Give Me Eight is the stronger Free Spins mode because Tenta Grab focuses on Wilds and Wild Multipliers. Eighth Arm Is The Charm allows a broader range of symbols to be grabbed, while Give Me Eight is built for more direct Wild Multiplier potential.

Can I play Octo Attack for free on SpinGang?

Yes. You can play the Octo Attack demo for free on SpinGang without registration, which is the best way to test the Ink Stains, Tenta Grab and Free Spins features before playing with real money.

Octo Attack

Name: Octo Attack
Author: Hacksaw Gaming

Octo Attack by Hacksaw Gaming throws players into a strange underwater street scene where Otto the Octopus controls the action with one of the studio’s most creative transformation mechanics. This is not a simple cluster slot with a sea theme placed on top. Octo Attack is built around Ink Stains, Wild Multipliers and the Eye of Otto, which can turn old winning positions into fresh chances for bigger combinations. The game uses a 6x5 grid with cluster pays, so wins are formed by landing matching symbols connected horizontally or vertically. Instead of paylines, the focus is on creating groups of matching symbols, clearing them from the grid and allowing new symbols to drop into place. Every winning position leaves behind an Ink Stain, and that detail is what gives Octo Attack its identity. In the base game, Ink Stains are created whenever winning symbols are removed. These stained positions stay on the grid until they are used by the Tenta Grab mechanic, but they reset between base game spins. This means every cascade can build a temporary setup, and the Eye of Otto becomes the symbol that can turn those marked positions into something much more valuable. The Eye of Otto activates Tenta Grab when it lands while Ink Stains are already present. Once triggered, Otto randomly grabs one symbol from the grid and replaces every Ink Stained position with that same symbol. The Eye symbol itself is also replaced. This can create new clusters instantly, especially when several stained positions are already spread across the grid. Tenta Grab can grab low symbols, premium symbols, FS symbols, Wilds or Wild Multiplier symbols. If it grabs a Wild or Wild Multiplier, the transformed positions can become Wild Multipliers, which is where Octo Attack starts to show its real potential. A good Tenta Grab can completely reshape the grid and turn a modest cascade into a serious hit. Wilds substitute for all paytable symbols and can also appear as Wild Multipliers. These multipliers range from 1x to 10x. When Wild Multipliers take part in a winning cluster, they boost the payout connected to that win. The feature becomes especially dangerous when Tenta Grab copies Wild related symbols across multiple Ink Stains, because several positions can suddenly become part of the same boosted cluster sequence. The standard Free Spins feature is called Eighth Arm Is The Charm. It is triggered by landing at least three normal FS scatter symbols in the base game. The number of triggering FS symbols decides the number of free spins awarded. During this feature, Ink Stains no longer reset between spins. They stay on the grid until Tenta Grab uses them, which makes the feature more progressive than the base game. Each winning spin can leave more marked positions behind, and the round can build pressure until the Eye of Otto finally lands. Extra free spins can also be awarded during Eighth Arm Is The Charm. If three normal FS scatter symbols land at the same time inside the feature, one extra spin is added. This keeps the round alive and gives the sticky Ink Stain setup more time to develop. Octo Attack also includes a stronger Free Spins mode called Give Me Eight. This feature is triggered by landing at least three epic FS scatter symbols. Like the standard round, the number of triggering scatters decides the number of free spins. Ink Stains remain persistent until used, but the major difference is what Tenta Grab can select. In Give Me Eight, Tenta Grab grabs Wilds or Wild Multipliers, making the feature far more focused on boosted cluster potential. That difference is important. Eighth Arm Is The Charm can transform Ink Stains into a wider range of symbols, including regular pay symbols and scatters. Give Me Eight is more direct and more explosive because its Tenta Grab mechanic is designed around Wild based transformations. When enough Ink Stains are waiting on the grid, a single Eye of Otto can create a dramatic shift in the round. Eligible players may also see Bonus Buy options depending on casino and market rules. Octo Attack includes BonusHunt FeatureSpins at 3x the bet, which increases the chance of landing three or more scatter symbols. Tentacular FeatureSpins cost 50x the bet and guarantee a winning combination plus one Eye of Otto activation per spin. The Eighth Arm Is The Charm feature can be bought directly for 100x the bet, while Give Me Eight can be bought for 300x the bet. The maximum win in Octo Attack is 10000x the bet, which fits the way the game is structured. It does not rely on one simple multiplier ladder or a basic free spins upgrade. Instead, the biggest moments come from stained positions, symbol replacement, Wild Multipliers and cascades connecting at the right time. The RTP and volatility can vary by casino configuration, so players should always check the in game information panel before playing. Visually, Octo Attack has a darker personality than many ocean themed slots. Otto gives the game a slightly menacing character, while the unusual mix of symbols makes the grid feel more like a surreal street scene than a classic underwater adventure. The muted background helps the premium symbols, Wilds, FS symbols and Eye of Otto stand out clearly, which is important in a mechanic driven slot where every marked position matters. Octo Attack is at its best when the grid starts to feel loaded with possibilities. A few cascades create Ink Stains. The Eye of Otto lands. Tenta Grab copies the right symbol. Wild Multipliers connect. That chain of events is what makes the game memorable. It is clever, unpredictable and unmistakably Hacksaw, with enough depth to keep every spin feeling alive.