Curious what Aquarium actually feels like to play? Here's our full, no-fluff take. Developed by WorldMatch, Aquarium arrives with a medium high-variance maths model and 94.75% RTP. Visually it's given an engaging visual treatment, with the action running on 5 reels and 30 paylines. It first went live in 2024 and still earns its place today. The maximum win sits at 5,000x, so there's serious upside on the table. But is it actually worth playing? Read on.
Written by Sophie Williams · Last updated: March 2026
At its core, Aquarium is a release produced by WorldMatch, wrapped in polished, characterful visuals. It runs on 5 reels and 30 paylines with a medium high volatility profile, and an RTP of 94.75%.
Where Aquarium earns its keep is the feature set. Look out for scatter symbols that unlock free spins and extra bonus rounds. Its medium high variance balances steady wins with the odd larger payout. On balance, Aquarium is a dependable option worth a few spins in the demo first.
The RTP of 94.75% 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.
Aquarium 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
Aquarium by WorldMatch is a solid offering that delivers good entertainment value. The 94.75% RTP combined with medium high volatility creates a well-balanced gaming experience.