Underplayed Gems

Idle Aquarium (2025)

Idle Aquarium cover
Developer
Triple Tails Software
Platforms
Windows
Genres
Casual, Indie, Simulation
Rating
3.0 of 5, 5 player ratings
Typical playtime
about 1.1 hours
Where to get it
Steam

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The 3D catalog: game boxes on wooden shelves, with the cat sitting at the counter next to its greeting.

The catalog in 3D

The same catalog has a room you can walk around in. The cat behind the counter is the AI Catbot, and they pick real games from it when you tell them what you feel like playing. Nothing is for sale, here or in there. Go in from here and this game is already out on the counter, with more like it waiting on the shelf next to it.

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How it feels

A calm, low-effort desktop companion where you passively watch fish swim and grow while you work.

casualrelaxingcozyidlerealisticlow-stakessatisfyingpeaceful

What players say

Players are split on this idle fish game. Some enjoy it as a cute desktop companion while watching other content, but many criticize the lack of tutorials, no breeding mechanics, and limited fish variety. The window cannot be resized and takes over the full desktop, causing problems for Linux users.

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More by Triple Tails Software

This page is from Underplayed Gems, a catalog of older and overlooked games. Not quite it? You can browse by platform and genre, or take this one into the 3D catalog and ask the Catbot for something closer.