Big Mouth Fishin' has been catching plenty of attention, so we put it through its paces to see how it really holds up. This is a Oros Gaming title, sitting firmly in the a medium low volatility profile bracket and paying back an RTP of 96.2%. Visually it's wrapped in a fish theme, with the action running on 15 paylines across 5 reels. Top wins are capped at 5,000x your stake, a healthy ceiling worth chasing. Originally released in 2023, it has aged well. The full verdict is below.
Written by Daniel Chen · Last updated: February 2026
Big Mouth Fishin' is a slot from Oros Gaming, leaning into a fish aesthetic. It runs on 5 reels and 15 paylines with medium low volatility, and a published RTP of 96.2%.
Where Big Mouth Fishin' earns its keep is the feature set. Look out for scatter symbols that unlock free spins and extra bonus rounds. The medium low volatility makes it forgiving on the bankroll, ideal for relaxed, longer sessions. All told, it's a solid entry in the Oros Gaming catalogue.
The RTP of 96.2% is right around the industry average of ~96%. This represents a fair return that's in line with what most modern slots offer.
Medium-low volatility offers a good balance of regular wins with occasional larger payouts. Expect frequent hits with modest amounts, suitable for casual players who want low-risk entertainment.
About 1 in 3 spins results in a win. This is a moderate hit frequency that balances win frequency with payout size.
Big Mouth Fishin' features scatter symbols that can trigger free spins rounds. Landing the required number of scatter symbols anywhere on the reels activates the free spins feature, giving you extra chances to win without additional bets. During free spins, special modifiers may apply to boost your winning potential.
3.0 / 5 — Good
Big Mouth Fishin' by Oros Gaming is a solid offering that delivers good entertainment value. The 96.2% RTP combined with medium low volatility creates a well-balanced gaming experience.