Welcome to our deep dive on Mermaid Scratch — the demo, the maths, and whether it earns a spot in your rotation. This is a SpinOro release, sitting firmly in the medium low volatility bracket and paying back a return-to-player rate of 94.14%. If everything lines up, Mermaid Scratch can pay up to 5,000x your bet. It's built with crisp artwork and atmosphere and plays out on a 5-reel grid running 40 paylines. Here's how it stacks up.
Written by Michael Torres · Last updated: January 2026
At its core, Mermaid Scratch is a title produced by SpinOro, built with crisp artwork and atmosphere. It runs on a 5-reel grid running 40 paylines with a medium low-variance maths model, and 94.14% RTP.
The medium low volatility makes it forgiving on the bankroll, ideal for relaxed, longer sessions. On balance, Mermaid Scratch is a dependable option worth a few spins in the demo first.
The RTP of 94.14% is below the industry average of ~96%. This is common for older slots or those with special features. The lower RTP may be offset by unique mechanics or higher maximum win potential.
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.
3.0 / 5 — Good
Mermaid Scratch by SpinOro is a solid offering that delivers good entertainment value. The 94.14% RTP combined with medium low volatility creates a well-balanced gaming experience.