Fish Boom
InOut Games fishing title with single-drop instant outcomes
The SlotRanker Score is calculated from the visible data below. It is not affected by affiliate deals, and it cannot be bought.
Why this score
Partial data (71%)Five weighted signals shape the composite. Four context signals refine ties. See how we rate for the full methodology.
Popularity blends real player search demand (~30 markets) with a catalogue-derived proxy; games without measurable search demand use the proxy alone. Not live play telemetry.
SlotRanker Score: 61 — Fish Boom by InOut Games
https://slotranker.com/inout-games/fish-boom#scoreSlot Summary
How It Plays
Each round starts with a stake choice and ends when the hook selects one of 20 visible cells. There are no paylines to assemble or cash-out decision to time.
Fish cells carry individual values, while adjacent matching fish may merge into a larger result. The selected cell resolves automatically, keeping every attempt self-contained.
Theme & Atmosphere
Fish and Sea imagery turn the probability field into a fishing board, with the descending hook making the theme part of the actual selection process.
The Animals remain functional markers of value rather than decorative reel symbols. Larger fish communicate stronger outcomes, while explosive cells interrupt the calmer underwater pattern.
Features & Win Potential
A Random reward is determined by the hook's landing cell, with ordinary fish, larger merged fish, and Bonus symbols creating different result types.
Free Spins arrive through a filling bar during standard play. The Bonus Bet offers a paid alternative that guarantees the hook reaches an explosive outcome cell.
Bonus & Free Spins
The Free Spins feature begins after the collection bar fills completely. It retains the hook-drop format while increasing symbol values and the presence of larger fish.
The Bonus Bet doubles the selected stake and guarantees an explosive landing, combining nearby fish values into one award instead of using the ordinary random drop.
True Cost to Play
Expected average based on this slot's 96.3% RTP — individual sessions vary with volatility.
Estimate only, for entertainment purposes — treat gambling as entertainment, not a way to make money, and set a budget you can afford to lose.
Bankroll survival simulator
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Compare Fish Boom with other games
 Fish Boom Score 61This game |  Freaked Out Fish Score 88 |  Razor Returns Score 87 |  Fish Prawn Crab Bonanza Score 87 |  Bass Cash Christmas X UP Score 87 | |
|---|---|---|---|---|---|
| Identity | |||||
| Studio | |||||
| Released | 11/17/2025 | 9/26/2024 | 7/4/2023 | 7/29/2024 | 11/25/2024 |
| Math | |||||
| RTP | 96.3% | 96.02% | 96.55% | 97.02% | 96.2% |
| Volatility | — | High volatility | High volatility | Medium/High | High volatility |
| Max win | — | 30,000× | 100,000× | 20,000× | — |
| Format | |||||
| Reels | 5 | 7 | 5 | 6 | 5 |
| Layout | 5x3 | 7x7 | 5x5 | 6x4 | 5x5 |
| Paylines | 1 | 0 | 40 | 25 | 10 |
| Min bet | 0.01 | 0.15 | 0.2 | 0.1 | 0.1 |
| Max bet | 150 | 45 | 100 | 10 | 20 |
| Features | |||||
| Progressive | — | — | — | — | — |
| Wild symbol | — | — | ✓ | ✓ | ✓ |
| Free spins | ✓ | ✓ | ✓ | ✓ | ✓ |
| Scatter symbol | — | ✓ | ✓ | ✓ | ✓ |
| Multiplier | — | ✓ | ✓ | ✓ | ✓ |
| Bonus game | — | — | ✓ | ✓ | ✓ |
| Respins | — | — | — | — | ✓ |
Every number is shown as a delta against Fish Boom.
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Questions & Answers
Fish Boom FAQ
No. Fish Boom is an instant-win hook-drop game on a 4x5 grid. One selected cell determines each round's result.
InOut Games lists the RTP at 96.3%. The figure represents theoretical long-run return rather than a guaranteed session result.
A Bet Bar fills during standard rounds. When it reaches 100%, the game starts a Free Spins sequence with stronger symbol values and more Big Fish appearances.
The paid mode doubles the stake and guarantees a landing on an explosive cell, combining nearby fish values into the resulting award.
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