Octo Attack
Octo Attack is a Hacksaw Gaming slot centered around an octopus character named Otto. Base gameplay revolves around cascading wins that leave Ink Stains on the grid. If the Eye of Otto symbol lands, it triggers the Tenta-Grab mechanic, which copies a randomly selected symbol into every stained position. Players can also trigger the Eighth Arm is the Charm bonus round, awarding free spins where Ink Stains persist across spins to build larger symbol replacements.
RTP published by the studio / Octo Attack
96.27%
Scale starts at 95% · other versions not published
Figures: Hacksaw Gaming demo game, Hacksaw Gaming game page, checked October 5, 2026; each value is linked to its page in the game facts table. Artwork © Hacksaw Gaming; image file from the Slots-Info slot database, not supplied by the studio.
10,000×
Max win, × stake
1
RTP version published · others not published
Yes
Bonus buy
Game facts
| Metric | Value |
|---|---|
| Studio | Hacksaw Gaming1 |
| RTP versions | 96.27%2 |
| Other RTP versions | Not published by the studio |
| Volatility | Not published |
| Max win | 10,000× stake2 |
| Bet range | €0.10 – €1001 |
| Layout | 6x51 |
| Features | Wild Multiplier Symbols, Ink Stains, Tenta-Grab Mechanic, Eighth Arm is the Charm Bonus Feature1 |
| Bonus buy | Yes2 |
| Release date | Not published by the studio |
Numbers link each value to the page it comes from. “Not published” means the studio does not state it; we add it when it does and never estimate a spec. Figures from casino sites are not used.
RTP versions
Hacksaw Gaming publishes one RTP setting for Octo Attack: 96.27%. Other RTP versions are not published by the studio. Check the game’s help or paytable screen at your casino to see which version it runs.
| RTP version | House edge | Return per $100, long run | vs highest |
|---|---|---|---|
| 96.27% (highest) | 3.73% | $96.27 | — |
House edge = 100% minus RTP. RTP is a long-run average across all players, not a prediction for a session.
Features
- Wild Multiplier Symbols
- Ink Stains
- Tenta-Grab Mechanic
- Eighth Arm is the Charm Bonus Feature
Where it’s available
Not confirmed. Availability in regulated North American markets is not confirmed yet.
Regulated markets only; availability varies by casino.
