My Joyful Aquarium (2025)

Developer: Error 300
Publisher: Error 300, Gamersky Games
Platforms: Windows, macOS, Linux
Genres: Casual, Simulation, Early Access
Rating: 4.7 of 5, 33 player ratings
Typical playtime: about 2.5 hours
Where to get it: Steam

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, open-ended experience of building and decorating a personal underwater world at your own pace

creativerelaxingcolorfulpeacefulcasualcustomizablesoothing

What players say

Players enjoy the relaxing idle gameplay and breeding fish with different appearances, but find progression too slow and some mechanics confusing, like all tanks sharing the same water settings.

Screenshots

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More by Error 300

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.