Welcome to our deep dive on Treasure Koi — the demo, the maths, and whether it earns a spot in your rotation. Built by Aspect Gaming, it lands as a slot with medium high volatility and a return-to-player rate of 94.3%. If everything lines up, Treasure Koi can pay up to 5,000x your bet. It's wrapped in a treasure and asian theme and plays out on 25 paylines across 5 reels. So does it deliver? Let's get into it.
Written by Emma Roberts · Last updated: February 2026
At its core, Treasure Koi is a slot produced by Aspect Gaming, dressed up with a treasure and asian theme. It runs on a 5-reel grid running 25 paylines with a medium high volatility profile, and 94.3% RTP.
Dig into the bonuses and Treasure Koi starts to stand out. Look out for scatter symbols that unlock free spins and extra bonus rounds. The medium high volatility strikes a middle ground that should suit most playing styles. On balance, Treasure Koi is a dependable option worth a few spins in the demo first.
The RTP of 94.3% 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-high volatility means wins come less frequently but tend to be larger when they hit. Players should be prepared for dry spells between bigger wins, requiring a moderate bankroll.
About 1 in 3 spins results in a win. This is a moderate hit frequency that balances win frequency with payout size.
Treasure Koi 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
Treasure Koi by Aspect Gaming is a solid offering that delivers good entertainment value. The 94.3% RTP combined with medium high volatility creates a well-balanced gaming experience.