Thinking about giving Koi Trio a spin? We tested it thoroughly so you know what to expect. JDB Gaming are the developer behind it, tuning the slot for medium low variance, with a published RTP of 95.2%. It's given an engaging visual treatment and plays out on 5 reels and 10 paylines. The maximum win sits at 5,000x, so there's serious upside on the table. So does it deliver? Let's get into it.
Written by Alex Crawford · Last updated: February 2026
This release, Koi Trio, is the work of JDB Gaming, given an engaging visual treatment. It runs on 10 paylines across 5 reels with medium low volatility, and 95.2% RTP.
Dig into the bonuses and Koi Trio starts to stand out. Look out for scatter symbols that unlock free spins and extra bonus rounds. Thanks to its medium low variance, wins come often enough to suit casual, lower-risk play. All told, it's a solid entry in the JDB Gaming catalogue.
At 95.2%, the RTP is slightly below the industry average of ~96%. While this is typical for many popular slots, players should be aware of the slightly lower theoretical return.
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.
Koi Trio 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
Koi Trio by JDB Gaming is a solid offering that delivers good entertainment value. The 95.2% RTP combined with medium low volatility creates a well-balanced gaming experience.